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Novel Aspirin Formulation Lowers Ulcer Risk
Patients at risk for gastric ulcers from long-term, low-dose aspirin regimens who received a novel aspirin therapy had significantly less ulceration, compared with those who received standard low-dose aspirin in a randomized, single-blind trial. The findings were published in the February issue of the American Journal of Gastroenterology.
Preclinical studies have shown that the noncovalent association of aspirin and phosphatidylcholine helps aspirin travel across the gastrointestinal mucosa with less risk for bleeding, said Dr. Byron Cryer of the University of Texas Southwestern Medical Center and Veterans Affairs North Texas Health Care System, Dallas, and his colleagues. This is important, the authors wrote, because "45% of patients with cardiovascular risk factors are not treated with antiplatelet agents because their risks of gastrointestinal (GI) bleeding outweigh [the] vascular benefit."
After 7 days of daily treatment, only 22% of patients randomized to an aspirin-phosphatidylcholine complex known as PL2200 developed six or more gastrointestinal erosions or an ulcer, compared with 42% of those randomized to immediate-release low-dose aspirin alone, a significant difference (P = .0027). Endoscopy was used to evaluate the upper-GI mucosa.
In addition, significantly fewer patients developed gastroduodenal ulcers in the PL2200 group, compared with the low-dose aspirin group (5% vs. 18%, respectively, P = .0069); this amounted to a 71% lower incidence of ulcers in the PL2200 group. The intent-to-treat population included 99 patients in the PL2200 group and 102 patients in the low-dose aspirin group. The patients were healthy and ranged in age from 50 to 74 years; they were considered at risk for GI injury because of their age (Am. J. Gastroenterol. 2011 [doi:10.1038/ajg.2010.436]).
For 7 days, the low-dose aspirin group received 325 mg of aspirin orally once a day, and the PL2200 patients received one PL2200 capsule that contained 325 mg of aspirin once a day. A total of 7 patients in the PL2200 group and 11 in the low-dose aspirin group were excluded because of baseline GI erosion, and 1 patient in each group was excluded for taking a prohibited medication during the study period. These exclusions left a per-protocol population of 91 subjects in the PL2200 group and 90 in the low-dose aspirin group. The percentages of patients that developed ulcers in the per-protocol analysis were similar to those in the intent-to-treat population.
No treatment-related discontinuations or serious adverse events were reported in either group.
"The study suggests that local effects that disrupt the gastric barrier to acid are an important component of aspirin-induced gastropathy," the researchers wrote. The relative contributions of local and systemic mechanisms that induce GI injury are not well understood, they added.
The study was limited by the short-term follow-up, and larger, longer-term studies are needed. However, the findings suggest that PL2200 is associated with significantly better GI safety than low-dose aspirin. Consequently, PL2200 might improve compliance in at risk patients who are likely to discontinue aspirin due to GI side effects, the researchers added.
All study authors, endoscopists, and investigators were blinded until database lock.
The study was funded by the National Institute of Diabetes and Digestive and Kidney Diseases and by PLx Pharma Inc., which is developing PL2200. Dr. Cryer has served as a consultant for multiple pharmaceutical companies including PLx Pharma, AstraZeneca Pharmaceuticals, and Cogentus Pharmaceuticals, and has served on advisory and review committees for Pfizer. Several study coauthors have received research support from or are employed by PLx Pharma or disclosed relationships with other pharmaceutical companies.
Patients at risk for gastric ulcers from long-term, low-dose aspirin regimens who received a novel aspirin therapy had significantly less ulceration, compared with those who received standard low-dose aspirin in a randomized, single-blind trial. The findings were published in the February issue of the American Journal of Gastroenterology.
Preclinical studies have shown that the noncovalent association of aspirin and phosphatidylcholine helps aspirin travel across the gastrointestinal mucosa with less risk for bleeding, said Dr. Byron Cryer of the University of Texas Southwestern Medical Center and Veterans Affairs North Texas Health Care System, Dallas, and his colleagues. This is important, the authors wrote, because "45% of patients with cardiovascular risk factors are not treated with antiplatelet agents because their risks of gastrointestinal (GI) bleeding outweigh [the] vascular benefit."
After 7 days of daily treatment, only 22% of patients randomized to an aspirin-phosphatidylcholine complex known as PL2200 developed six or more gastrointestinal erosions or an ulcer, compared with 42% of those randomized to immediate-release low-dose aspirin alone, a significant difference (P = .0027). Endoscopy was used to evaluate the upper-GI mucosa.
In addition, significantly fewer patients developed gastroduodenal ulcers in the PL2200 group, compared with the low-dose aspirin group (5% vs. 18%, respectively, P = .0069); this amounted to a 71% lower incidence of ulcers in the PL2200 group. The intent-to-treat population included 99 patients in the PL2200 group and 102 patients in the low-dose aspirin group. The patients were healthy and ranged in age from 50 to 74 years; they were considered at risk for GI injury because of their age (Am. J. Gastroenterol. 2011 [doi:10.1038/ajg.2010.436]).
For 7 days, the low-dose aspirin group received 325 mg of aspirin orally once a day, and the PL2200 patients received one PL2200 capsule that contained 325 mg of aspirin once a day. A total of 7 patients in the PL2200 group and 11 in the low-dose aspirin group were excluded because of baseline GI erosion, and 1 patient in each group was excluded for taking a prohibited medication during the study period. These exclusions left a per-protocol population of 91 subjects in the PL2200 group and 90 in the low-dose aspirin group. The percentages of patients that developed ulcers in the per-protocol analysis were similar to those in the intent-to-treat population.
No treatment-related discontinuations or serious adverse events were reported in either group.
"The study suggests that local effects that disrupt the gastric barrier to acid are an important component of aspirin-induced gastropathy," the researchers wrote. The relative contributions of local and systemic mechanisms that induce GI injury are not well understood, they added.
The study was limited by the short-term follow-up, and larger, longer-term studies are needed. However, the findings suggest that PL2200 is associated with significantly better GI safety than low-dose aspirin. Consequently, PL2200 might improve compliance in at risk patients who are likely to discontinue aspirin due to GI side effects, the researchers added.
All study authors, endoscopists, and investigators were blinded until database lock.
The study was funded by the National Institute of Diabetes and Digestive and Kidney Diseases and by PLx Pharma Inc., which is developing PL2200. Dr. Cryer has served as a consultant for multiple pharmaceutical companies including PLx Pharma, AstraZeneca Pharmaceuticals, and Cogentus Pharmaceuticals, and has served on advisory and review committees for Pfizer. Several study coauthors have received research support from or are employed by PLx Pharma or disclosed relationships with other pharmaceutical companies.
Patients at risk for gastric ulcers from long-term, low-dose aspirin regimens who received a novel aspirin therapy had significantly less ulceration, compared with those who received standard low-dose aspirin in a randomized, single-blind trial. The findings were published in the February issue of the American Journal of Gastroenterology.
Preclinical studies have shown that the noncovalent association of aspirin and phosphatidylcholine helps aspirin travel across the gastrointestinal mucosa with less risk for bleeding, said Dr. Byron Cryer of the University of Texas Southwestern Medical Center and Veterans Affairs North Texas Health Care System, Dallas, and his colleagues. This is important, the authors wrote, because "45% of patients with cardiovascular risk factors are not treated with antiplatelet agents because their risks of gastrointestinal (GI) bleeding outweigh [the] vascular benefit."
After 7 days of daily treatment, only 22% of patients randomized to an aspirin-phosphatidylcholine complex known as PL2200 developed six or more gastrointestinal erosions or an ulcer, compared with 42% of those randomized to immediate-release low-dose aspirin alone, a significant difference (P = .0027). Endoscopy was used to evaluate the upper-GI mucosa.
In addition, significantly fewer patients developed gastroduodenal ulcers in the PL2200 group, compared with the low-dose aspirin group (5% vs. 18%, respectively, P = .0069); this amounted to a 71% lower incidence of ulcers in the PL2200 group. The intent-to-treat population included 99 patients in the PL2200 group and 102 patients in the low-dose aspirin group. The patients were healthy and ranged in age from 50 to 74 years; they were considered at risk for GI injury because of their age (Am. J. Gastroenterol. 2011 [doi:10.1038/ajg.2010.436]).
For 7 days, the low-dose aspirin group received 325 mg of aspirin orally once a day, and the PL2200 patients received one PL2200 capsule that contained 325 mg of aspirin once a day. A total of 7 patients in the PL2200 group and 11 in the low-dose aspirin group were excluded because of baseline GI erosion, and 1 patient in each group was excluded for taking a prohibited medication during the study period. These exclusions left a per-protocol population of 91 subjects in the PL2200 group and 90 in the low-dose aspirin group. The percentages of patients that developed ulcers in the per-protocol analysis were similar to those in the intent-to-treat population.
No treatment-related discontinuations or serious adverse events were reported in either group.
"The study suggests that local effects that disrupt the gastric barrier to acid are an important component of aspirin-induced gastropathy," the researchers wrote. The relative contributions of local and systemic mechanisms that induce GI injury are not well understood, they added.
The study was limited by the short-term follow-up, and larger, longer-term studies are needed. However, the findings suggest that PL2200 is associated with significantly better GI safety than low-dose aspirin. Consequently, PL2200 might improve compliance in at risk patients who are likely to discontinue aspirin due to GI side effects, the researchers added.
All study authors, endoscopists, and investigators were blinded until database lock.
The study was funded by the National Institute of Diabetes and Digestive and Kidney Diseases and by PLx Pharma Inc., which is developing PL2200. Dr. Cryer has served as a consultant for multiple pharmaceutical companies including PLx Pharma, AstraZeneca Pharmaceuticals, and Cogentus Pharmaceuticals, and has served on advisory and review committees for Pfizer. Several study coauthors have received research support from or are employed by PLx Pharma or disclosed relationships with other pharmaceutical companies.
FROM THE AMERICAN JOURNAL OF GASTROENTEROLOGY
Novel Aspirin Formulation Lowers Ulcer Risk
Patients at risk for gastric ulcers from long-term, low-dose aspirin regimens who received a novel aspirin therapy had significantly less ulceration, compared with those who received standard low-dose aspirin in a randomized, single-blind trial. The findings were published in the February issue of the American Journal of Gastroenterology.
Preclinical studies have shown that the noncovalent association of aspirin and phosphatidylcholine helps aspirin travel across the gastrointestinal mucosa with less risk for bleeding, said Dr. Byron Cryer of the University of Texas Southwestern Medical Center and Veterans Affairs North Texas Health Care System, Dallas, and his colleagues. This is important, the authors wrote, because "45% of patients with cardiovascular risk factors are not treated with antiplatelet agents because their risks of gastrointestinal (GI) bleeding outweigh [the] vascular benefit."
After 7 days of daily treatment, only 22% of patients randomized to an aspirin-phosphatidylcholine complex known as PL2200 developed six or more gastrointestinal erosions or an ulcer, compared with 42% of those randomized to immediate-release low-dose aspirin alone, a significant difference (P = .0027). Endoscopy was used to evaluate the upper-GI mucosa.
In addition, significantly fewer patients developed gastroduodenal ulcers in the PL2200 group, compared with the low-dose aspirin group (5% vs. 18%, respectively, P = .0069); this amounted to a 71% lower incidence of ulcers in the PL2200 group. The intent-to-treat population included 99 patients in the PL2200 group and 102 patients in the low-dose aspirin group. The patients were healthy and ranged in age from 50 to 74 years; they were considered at risk for GI injury because of their age (Am. J. Gastroenterol. 2011 [doi:10.1038/ajg.2010.436]).
For 7 days, the low-dose aspirin group received 325 mg of aspirin orally once a day, and the PL2200 patients received one PL2200 capsule that contained 325 mg of aspirin once a day. A total of 7 patients in the PL2200 group and 11 in the low-dose aspirin group were excluded because of baseline GI erosion, and 1 patient in each group was excluded for taking a prohibited medication during the study period. These exclusions left a per-protocol population of 91 subjects in the PL2200 group and 90 in the low-dose aspirin group. The percentages of patients that developed ulcers in the per-protocol analysis were similar to those in the intent-to-treat population.
No treatment-related discontinuations or serious adverse events were reported in either group.
"The study suggests that local effects that disrupt the gastric barrier to acid are an important component of aspirin-induced gastropathy," the researchers wrote. The relative contributions of local and systemic mechanisms that induce GI injury are not well understood, they added.
The study was limited by the short-term follow-up, and larger, longer-term studies are needed. However, the findings suggest that PL2200 is associated with significantly better GI safety than low-dose aspirin. Consequently, PL2200 might improve compliance in at risk patients who are likely to discontinue aspirin due to GI side effects, the researchers added.
All study authors, endoscopists, and investigators were blinded until database lock.
The study was funded by the National Institute of Diabetes and Digestive and Kidney Diseases and by PLx Pharma Inc., which is developing PL2200. Dr. Cryer has served as a consultant for multiple pharmaceutical companies including PLx Pharma, AstraZeneca Pharmaceuticals, and Cogentus Pharmaceuticals, and has served on advisory and review committees for Pfizer. Several study coauthors have received research support from or are employed by PLx Pharma or disclosed relationships with other pharmaceutical companies.
Patients at risk for gastric ulcers from long-term, low-dose aspirin regimens who received a novel aspirin therapy had significantly less ulceration, compared with those who received standard low-dose aspirin in a randomized, single-blind trial. The findings were published in the February issue of the American Journal of Gastroenterology.
Preclinical studies have shown that the noncovalent association of aspirin and phosphatidylcholine helps aspirin travel across the gastrointestinal mucosa with less risk for bleeding, said Dr. Byron Cryer of the University of Texas Southwestern Medical Center and Veterans Affairs North Texas Health Care System, Dallas, and his colleagues. This is important, the authors wrote, because "45% of patients with cardiovascular risk factors are not treated with antiplatelet agents because their risks of gastrointestinal (GI) bleeding outweigh [the] vascular benefit."
After 7 days of daily treatment, only 22% of patients randomized to an aspirin-phosphatidylcholine complex known as PL2200 developed six or more gastrointestinal erosions or an ulcer, compared with 42% of those randomized to immediate-release low-dose aspirin alone, a significant difference (P = .0027). Endoscopy was used to evaluate the upper-GI mucosa.
In addition, significantly fewer patients developed gastroduodenal ulcers in the PL2200 group, compared with the low-dose aspirin group (5% vs. 18%, respectively, P = .0069); this amounted to a 71% lower incidence of ulcers in the PL2200 group. The intent-to-treat population included 99 patients in the PL2200 group and 102 patients in the low-dose aspirin group. The patients were healthy and ranged in age from 50 to 74 years; they were considered at risk for GI injury because of their age (Am. J. Gastroenterol. 2011 [doi:10.1038/ajg.2010.436]).
For 7 days, the low-dose aspirin group received 325 mg of aspirin orally once a day, and the PL2200 patients received one PL2200 capsule that contained 325 mg of aspirin once a day. A total of 7 patients in the PL2200 group and 11 in the low-dose aspirin group were excluded because of baseline GI erosion, and 1 patient in each group was excluded for taking a prohibited medication during the study period. These exclusions left a per-protocol population of 91 subjects in the PL2200 group and 90 in the low-dose aspirin group. The percentages of patients that developed ulcers in the per-protocol analysis were similar to those in the intent-to-treat population.
No treatment-related discontinuations or serious adverse events were reported in either group.
"The study suggests that local effects that disrupt the gastric barrier to acid are an important component of aspirin-induced gastropathy," the researchers wrote. The relative contributions of local and systemic mechanisms that induce GI injury are not well understood, they added.
The study was limited by the short-term follow-up, and larger, longer-term studies are needed. However, the findings suggest that PL2200 is associated with significantly better GI safety than low-dose aspirin. Consequently, PL2200 might improve compliance in at risk patients who are likely to discontinue aspirin due to GI side effects, the researchers added.
All study authors, endoscopists, and investigators were blinded until database lock.
The study was funded by the National Institute of Diabetes and Digestive and Kidney Diseases and by PLx Pharma Inc., which is developing PL2200. Dr. Cryer has served as a consultant for multiple pharmaceutical companies including PLx Pharma, AstraZeneca Pharmaceuticals, and Cogentus Pharmaceuticals, and has served on advisory and review committees for Pfizer. Several study coauthors have received research support from or are employed by PLx Pharma or disclosed relationships with other pharmaceutical companies.
Patients at risk for gastric ulcers from long-term, low-dose aspirin regimens who received a novel aspirin therapy had significantly less ulceration, compared with those who received standard low-dose aspirin in a randomized, single-blind trial. The findings were published in the February issue of the American Journal of Gastroenterology.
Preclinical studies have shown that the noncovalent association of aspirin and phosphatidylcholine helps aspirin travel across the gastrointestinal mucosa with less risk for bleeding, said Dr. Byron Cryer of the University of Texas Southwestern Medical Center and Veterans Affairs North Texas Health Care System, Dallas, and his colleagues. This is important, the authors wrote, because "45% of patients with cardiovascular risk factors are not treated with antiplatelet agents because their risks of gastrointestinal (GI) bleeding outweigh [the] vascular benefit."
After 7 days of daily treatment, only 22% of patients randomized to an aspirin-phosphatidylcholine complex known as PL2200 developed six or more gastrointestinal erosions or an ulcer, compared with 42% of those randomized to immediate-release low-dose aspirin alone, a significant difference (P = .0027). Endoscopy was used to evaluate the upper-GI mucosa.
In addition, significantly fewer patients developed gastroduodenal ulcers in the PL2200 group, compared with the low-dose aspirin group (5% vs. 18%, respectively, P = .0069); this amounted to a 71% lower incidence of ulcers in the PL2200 group. The intent-to-treat population included 99 patients in the PL2200 group and 102 patients in the low-dose aspirin group. The patients were healthy and ranged in age from 50 to 74 years; they were considered at risk for GI injury because of their age (Am. J. Gastroenterol. 2011 [doi:10.1038/ajg.2010.436]).
For 7 days, the low-dose aspirin group received 325 mg of aspirin orally once a day, and the PL2200 patients received one PL2200 capsule that contained 325 mg of aspirin once a day. A total of 7 patients in the PL2200 group and 11 in the low-dose aspirin group were excluded because of baseline GI erosion, and 1 patient in each group was excluded for taking a prohibited medication during the study period. These exclusions left a per-protocol population of 91 subjects in the PL2200 group and 90 in the low-dose aspirin group. The percentages of patients that developed ulcers in the per-protocol analysis were similar to those in the intent-to-treat population.
No treatment-related discontinuations or serious adverse events were reported in either group.
"The study suggests that local effects that disrupt the gastric barrier to acid are an important component of aspirin-induced gastropathy," the researchers wrote. The relative contributions of local and systemic mechanisms that induce GI injury are not well understood, they added.
The study was limited by the short-term follow-up, and larger, longer-term studies are needed. However, the findings suggest that PL2200 is associated with significantly better GI safety than low-dose aspirin. Consequently, PL2200 might improve compliance in at risk patients who are likely to discontinue aspirin due to GI side effects, the researchers added.
All study authors, endoscopists, and investigators were blinded until database lock.
The study was funded by the National Institute of Diabetes and Digestive and Kidney Diseases and by PLx Pharma Inc., which is developing PL2200. Dr. Cryer has served as a consultant for multiple pharmaceutical companies including PLx Pharma, AstraZeneca Pharmaceuticals, and Cogentus Pharmaceuticals, and has served on advisory and review committees for Pfizer. Several study coauthors have received research support from or are employed by PLx Pharma or disclosed relationships with other pharmaceutical companies.
FROM THE AMERICAN JOURNAL OF GASTROENTEROLOGY
Novel Aspirin Formulation Lowers Ulcer Risk
Patients at risk for gastric ulcers from long-term, low-dose aspirin regimens who received a novel aspirin therapy had significantly less ulceration, compared with those who received standard low-dose aspirin in a randomized, single-blind trial. The findings were published in the February issue of the American Journal of Gastroenterology.
Preclinical studies have shown that the noncovalent association of aspirin and phosphatidylcholine helps aspirin travel across the gastrointestinal mucosa with less risk for bleeding, said Dr. Byron Cryer of the University of Texas Southwestern Medical Center and Veterans Affairs North Texas Health Care System, Dallas, and his colleagues. This is important, the authors wrote, because "45% of patients with cardiovascular risk factors are not treated with antiplatelet agents because their risks of gastrointestinal (GI) bleeding outweigh [the] vascular benefit."
After 7 days of daily treatment, only 22% of patients randomized to an aspirin-phosphatidylcholine complex known as PL2200 developed six or more gastrointestinal erosions or an ulcer, compared with 42% of those randomized to immediate-release low-dose aspirin alone, a significant difference (P = .0027). Endoscopy was used to evaluate the upper-GI mucosa.
In addition, significantly fewer patients developed gastroduodenal ulcers in the PL2200 group, compared with the low-dose aspirin group (5% vs. 18%, respectively, P = .0069); this amounted to a 71% lower incidence of ulcers in the PL2200 group. The intent-to-treat population included 99 patients in the PL2200 group and 102 patients in the low-dose aspirin group. The patients were healthy and ranged in age from 50 to 74 years; they were considered at risk for GI injury because of their age (Am. J. Gastroenterol. 2011 [doi:10.1038/ajg.2010.436]).
For 7 days, the low-dose aspirin group received 325 mg of aspirin orally once a day, and the PL2200 patients received one PL2200 capsule that contained 325 mg of aspirin once a day. A total of 7 patients in the PL2200 group and 11 in the low-dose aspirin group were excluded because of baseline GI erosion, and 1 patient in each group was excluded for taking a prohibited medication during the study period. These exclusions left a per-protocol population of 91 subjects in the PL2200 group and 90 in the low-dose aspirin group. The percentages of patients that developed ulcers in the per-protocol analysis were similar to those in the intent-to-treat population.
No treatment-related discontinuations or serious adverse events were reported in either group.
"The study suggests that local effects that disrupt the gastric barrier to acid are an important component of aspirin-induced gastropathy," the researchers wrote. The relative contributions of local and systemic mechanisms that induce GI injury are not well understood, they added.
The study was limited by the short-term follow-up, and larger, longer-term studies are needed. However, the findings suggest that PL2200 is associated with significantly better GI safety than low-dose aspirin. Consequently, PL2200 might improve compliance in at risk patients who are likely to discontinue aspirin due to GI side effects, the researchers added.
All study authors, endoscopists, and investigators were blinded until database lock.
The study was funded by the National Institute of Diabetes and Digestive and Kidney Diseases and by PLx Pharma Inc., which is developing PL2200. Dr. Cryer has served as a consultant for multiple pharmaceutical companies including PLx Pharma, AstraZeneca Pharmaceuticals, and Cogentus Pharmaceuticals, and has served on advisory and review committees for Pfizer. Several study coauthors have received research support from or are employed by PLx Pharma or disclosed relationships with other pharmaceutical companies.
Patients at risk for gastric ulcers from long-term, low-dose aspirin regimens who received a novel aspirin therapy had significantly less ulceration, compared with those who received standard low-dose aspirin in a randomized, single-blind trial. The findings were published in the February issue of the American Journal of Gastroenterology.
Preclinical studies have shown that the noncovalent association of aspirin and phosphatidylcholine helps aspirin travel across the gastrointestinal mucosa with less risk for bleeding, said Dr. Byron Cryer of the University of Texas Southwestern Medical Center and Veterans Affairs North Texas Health Care System, Dallas, and his colleagues. This is important, the authors wrote, because "45% of patients with cardiovascular risk factors are not treated with antiplatelet agents because their risks of gastrointestinal (GI) bleeding outweigh [the] vascular benefit."
After 7 days of daily treatment, only 22% of patients randomized to an aspirin-phosphatidylcholine complex known as PL2200 developed six or more gastrointestinal erosions or an ulcer, compared with 42% of those randomized to immediate-release low-dose aspirin alone, a significant difference (P = .0027). Endoscopy was used to evaluate the upper-GI mucosa.
In addition, significantly fewer patients developed gastroduodenal ulcers in the PL2200 group, compared with the low-dose aspirin group (5% vs. 18%, respectively, P = .0069); this amounted to a 71% lower incidence of ulcers in the PL2200 group. The intent-to-treat population included 99 patients in the PL2200 group and 102 patients in the low-dose aspirin group. The patients were healthy and ranged in age from 50 to 74 years; they were considered at risk for GI injury because of their age (Am. J. Gastroenterol. 2011 [doi:10.1038/ajg.2010.436]).
For 7 days, the low-dose aspirin group received 325 mg of aspirin orally once a day, and the PL2200 patients received one PL2200 capsule that contained 325 mg of aspirin once a day. A total of 7 patients in the PL2200 group and 11 in the low-dose aspirin group were excluded because of baseline GI erosion, and 1 patient in each group was excluded for taking a prohibited medication during the study period. These exclusions left a per-protocol population of 91 subjects in the PL2200 group and 90 in the low-dose aspirin group. The percentages of patients that developed ulcers in the per-protocol analysis were similar to those in the intent-to-treat population.
No treatment-related discontinuations or serious adverse events were reported in either group.
"The study suggests that local effects that disrupt the gastric barrier to acid are an important component of aspirin-induced gastropathy," the researchers wrote. The relative contributions of local and systemic mechanisms that induce GI injury are not well understood, they added.
The study was limited by the short-term follow-up, and larger, longer-term studies are needed. However, the findings suggest that PL2200 is associated with significantly better GI safety than low-dose aspirin. Consequently, PL2200 might improve compliance in at risk patients who are likely to discontinue aspirin due to GI side effects, the researchers added.
All study authors, endoscopists, and investigators were blinded until database lock.
The study was funded by the National Institute of Diabetes and Digestive and Kidney Diseases and by PLx Pharma Inc., which is developing PL2200. Dr. Cryer has served as a consultant for multiple pharmaceutical companies including PLx Pharma, AstraZeneca Pharmaceuticals, and Cogentus Pharmaceuticals, and has served on advisory and review committees for Pfizer. Several study coauthors have received research support from or are employed by PLx Pharma or disclosed relationships with other pharmaceutical companies.
Patients at risk for gastric ulcers from long-term, low-dose aspirin regimens who received a novel aspirin therapy had significantly less ulceration, compared with those who received standard low-dose aspirin in a randomized, single-blind trial. The findings were published in the February issue of the American Journal of Gastroenterology.
Preclinical studies have shown that the noncovalent association of aspirin and phosphatidylcholine helps aspirin travel across the gastrointestinal mucosa with less risk for bleeding, said Dr. Byron Cryer of the University of Texas Southwestern Medical Center and Veterans Affairs North Texas Health Care System, Dallas, and his colleagues. This is important, the authors wrote, because "45% of patients with cardiovascular risk factors are not treated with antiplatelet agents because their risks of gastrointestinal (GI) bleeding outweigh [the] vascular benefit."
After 7 days of daily treatment, only 22% of patients randomized to an aspirin-phosphatidylcholine complex known as PL2200 developed six or more gastrointestinal erosions or an ulcer, compared with 42% of those randomized to immediate-release low-dose aspirin alone, a significant difference (P = .0027). Endoscopy was used to evaluate the upper-GI mucosa.
In addition, significantly fewer patients developed gastroduodenal ulcers in the PL2200 group, compared with the low-dose aspirin group (5% vs. 18%, respectively, P = .0069); this amounted to a 71% lower incidence of ulcers in the PL2200 group. The intent-to-treat population included 99 patients in the PL2200 group and 102 patients in the low-dose aspirin group. The patients were healthy and ranged in age from 50 to 74 years; they were considered at risk for GI injury because of their age (Am. J. Gastroenterol. 2011 [doi:10.1038/ajg.2010.436]).
For 7 days, the low-dose aspirin group received 325 mg of aspirin orally once a day, and the PL2200 patients received one PL2200 capsule that contained 325 mg of aspirin once a day. A total of 7 patients in the PL2200 group and 11 in the low-dose aspirin group were excluded because of baseline GI erosion, and 1 patient in each group was excluded for taking a prohibited medication during the study period. These exclusions left a per-protocol population of 91 subjects in the PL2200 group and 90 in the low-dose aspirin group. The percentages of patients that developed ulcers in the per-protocol analysis were similar to those in the intent-to-treat population.
No treatment-related discontinuations or serious adverse events were reported in either group.
"The study suggests that local effects that disrupt the gastric barrier to acid are an important component of aspirin-induced gastropathy," the researchers wrote. The relative contributions of local and systemic mechanisms that induce GI injury are not well understood, they added.
The study was limited by the short-term follow-up, and larger, longer-term studies are needed. However, the findings suggest that PL2200 is associated with significantly better GI safety than low-dose aspirin. Consequently, PL2200 might improve compliance in at risk patients who are likely to discontinue aspirin due to GI side effects, the researchers added.
All study authors, endoscopists, and investigators were blinded until database lock.
The study was funded by the National Institute of Diabetes and Digestive and Kidney Diseases and by PLx Pharma Inc., which is developing PL2200. Dr. Cryer has served as a consultant for multiple pharmaceutical companies including PLx Pharma, AstraZeneca Pharmaceuticals, and Cogentus Pharmaceuticals, and has served on advisory and review committees for Pfizer. Several study coauthors have received research support from or are employed by PLx Pharma or disclosed relationships with other pharmaceutical companies.
FROM THE AMERICAN JOURNAL OF GASTROENTEROLOGY
Eribulin Extends Survival of Women With Heavily Pretreated Breast Cancer
Eribulin monotherapy achieved "a significant and clinically meaningful improvement" in overall survival, compared with other treatments of choice in women with heavily pretreated metastatic breast cancer, according to pivotal EMBRACE trial data published online by the Lancet on March 3.
Median overall survival rate reached 13.1 months in women treated with eribulin (Halaven), compared with 10.6 months in the control group (P = .041). Median progression-free survival was 3.7 months and 2.2 months, respectively (P = .137) based on an independent review of the intent-to-treat population. Fatal adverse events occurred in 4% of the eribulin patients vs. 7% of the control group.
"To our knowledge, EMBRACE is the first major single-agent study of a cytotoxic or biological agent to show significantly increased survival in patients with such heavily pretreated metastatic breast cancer," said Dr. Javier Cortes of Vall d’Hebron University Hospital and Institute of Oncology in Barcelona and colleagues (Lancet 2011 March 3 [doi: 10.1016/S0140-6736(11)60070-6]).
A non-taxane microtubule inhibitor, eribulin is a synthetic analogue of halichondrin B, a natural product isolated from a sea sponge. The U.S. Food & Drug Administration based its approval of eribulin for women who had received at least two prior treatments, including a taxane and an anthracycline, for metastatic breast cancer on results of the EMBRACE (Eisai Metastatic Breast Cancer Study Assessing Physician’s Choice vs. E7389) study. Findings were originally presented at the American Society of Clinical Oncology annual meeting in 2010.
The open-label study randomized 508 women to eribulin and 254 to a control group; 6 patients in each group discontinued before starting treatment, leaving 503 in the eribulin group and 247 in the control group. The women were aged 18 years and older, with confirmed breast cancer and a history of 2-5 previous chemotherapy regimens.
Patients in the eribulin group received 1.4 mg/m2 eribulin mesylate intravenously for 2-5 minutes on days 1 and 8 of a 21-day cycle. The control group received the physician’s treatment of choice, which could be any single-agent chemotherapy, hormonal therapy, or biologic therapy approved for cancer, and administered according to the local practice.
The researchers assessed tumor response every 8 weeks. Treatment continued until disease progression, serious noncompliance with protocol, unacceptable toxicity, or a doctor’s or patient’s request to stop treatment. The patients had a median of four previous chemotherapy regimens, of which capecitabine was the most common (73%). A total of 16% had HER2-positive disease, and 19% had triple-negative breast cancer.
The most common overall adverse event was asthenia or fatigue of all grades, which occurred in 54% in the eribulin group and 40% of the control group. The most common hematologic adverse event was neutropenia of all grades in 52% of the eribulin group and 30% of the control group.
About a fourth of both groups experienced serious adverse events. Peripheral neuropathy was the most common cause for discontinuing eribulin, occurring in 5% of 503 patients.
The findings were limited by the range of the therapies in the control group and by the use of overall survival as a primary end point, the researchers noted. But the diversity of the control group might make the findings more generalizable to clinical practice, they added.
"The benefit that eribulin had shown as a single agent in this setting suggests that this drug could become a new standard of care; further evaluation earlier in the natural history of breast cancer is warranted," the researchers wrote.
In an accompanying editorial, Dr. Nancy U. Lin and Dr. Harold J. Burstein wrote that he results of the EMBRACE study raise many questions, including whether some patients or tumor subtypes would benefit from ongoing therapy (Lancet 2011 March 3 [doi: 10.1016/S0140-6736(11)60280-8]).
Dr. Lin and Dr. Burstein, both of Harvard Medical School and the Dana-Farber Cancer Institute, Boston, noted that the relatively modest clinical improvements suggest the need for more information on how the treatment affects symptom control and quality of life.
"In the meantime, EMBRACE provides much-needed, high-level evidence for chemotherapy use in patients with heavily pretreated breast cancer," they wrote. "And that evidence suggests that the methods to treat advanced breast cancer are growing," they wrote.
The study was funded by Eisai, maker of eribulin, and Eisai employees were involved in the study design, data collection, and data analysis. Dr. Cortes has received consultant fees from Eisai and Roche.
Dr. Lin and Dr. Burstein said they had no conflicts of interest.
The results of the EMBRACE study raise many questions, including whether some patients or tumor subtypes would benefit from ongoing therapy, Dr. Nancy U. Lin and Dr. Harold J. Burstein of Harvard Medical School, Boston, wrote in an accompanying editorial (Lancet 2011 March 3 [Epub doi: 10.1016/S0140-6736(11)60280-8]).
The editorialists noted that the relatively modest clinical improvements suggest the need for more information on how the treatment affects symptom control and quality of life.
"In the meantime, EMBRACE provides much-needed, high-level evidence for chemotherapy use in patients with heavily pretreated breast cancer," they wrote. "And that evidence suggests that the methods to treat advanced breast cancer are growing," they said.
Dr. Nancy U. Lin and Dr. Harold J. Burstein are oncologists at Dana-Farber Cancer Institute, and on the faculty of Harvard Medical School. They said they had no conflicts of interest.
The results of the EMBRACE study raise many questions, including whether some patients or tumor subtypes would benefit from ongoing therapy, Dr. Nancy U. Lin and Dr. Harold J. Burstein of Harvard Medical School, Boston, wrote in an accompanying editorial (Lancet 2011 March 3 [Epub doi: 10.1016/S0140-6736(11)60280-8]).
The editorialists noted that the relatively modest clinical improvements suggest the need for more information on how the treatment affects symptom control and quality of life.
"In the meantime, EMBRACE provides much-needed, high-level evidence for chemotherapy use in patients with heavily pretreated breast cancer," they wrote. "And that evidence suggests that the methods to treat advanced breast cancer are growing," they said.
Dr. Nancy U. Lin and Dr. Harold J. Burstein are oncologists at Dana-Farber Cancer Institute, and on the faculty of Harvard Medical School. They said they had no conflicts of interest.
The results of the EMBRACE study raise many questions, including whether some patients or tumor subtypes would benefit from ongoing therapy, Dr. Nancy U. Lin and Dr. Harold J. Burstein of Harvard Medical School, Boston, wrote in an accompanying editorial (Lancet 2011 March 3 [Epub doi: 10.1016/S0140-6736(11)60280-8]).
The editorialists noted that the relatively modest clinical improvements suggest the need for more information on how the treatment affects symptom control and quality of life.
"In the meantime, EMBRACE provides much-needed, high-level evidence for chemotherapy use in patients with heavily pretreated breast cancer," they wrote. "And that evidence suggests that the methods to treat advanced breast cancer are growing," they said.
Dr. Nancy U. Lin and Dr. Harold J. Burstein are oncologists at Dana-Farber Cancer Institute, and on the faculty of Harvard Medical School. They said they had no conflicts of interest.
Eribulin monotherapy achieved "a significant and clinically meaningful improvement" in overall survival, compared with other treatments of choice in women with heavily pretreated metastatic breast cancer, according to pivotal EMBRACE trial data published online by the Lancet on March 3.
Median overall survival rate reached 13.1 months in women treated with eribulin (Halaven), compared with 10.6 months in the control group (P = .041). Median progression-free survival was 3.7 months and 2.2 months, respectively (P = .137) based on an independent review of the intent-to-treat population. Fatal adverse events occurred in 4% of the eribulin patients vs. 7% of the control group.
"To our knowledge, EMBRACE is the first major single-agent study of a cytotoxic or biological agent to show significantly increased survival in patients with such heavily pretreated metastatic breast cancer," said Dr. Javier Cortes of Vall d’Hebron University Hospital and Institute of Oncology in Barcelona and colleagues (Lancet 2011 March 3 [doi: 10.1016/S0140-6736(11)60070-6]).
A non-taxane microtubule inhibitor, eribulin is a synthetic analogue of halichondrin B, a natural product isolated from a sea sponge. The U.S. Food & Drug Administration based its approval of eribulin for women who had received at least two prior treatments, including a taxane and an anthracycline, for metastatic breast cancer on results of the EMBRACE (Eisai Metastatic Breast Cancer Study Assessing Physician’s Choice vs. E7389) study. Findings were originally presented at the American Society of Clinical Oncology annual meeting in 2010.
The open-label study randomized 508 women to eribulin and 254 to a control group; 6 patients in each group discontinued before starting treatment, leaving 503 in the eribulin group and 247 in the control group. The women were aged 18 years and older, with confirmed breast cancer and a history of 2-5 previous chemotherapy regimens.
Patients in the eribulin group received 1.4 mg/m2 eribulin mesylate intravenously for 2-5 minutes on days 1 and 8 of a 21-day cycle. The control group received the physician’s treatment of choice, which could be any single-agent chemotherapy, hormonal therapy, or biologic therapy approved for cancer, and administered according to the local practice.
The researchers assessed tumor response every 8 weeks. Treatment continued until disease progression, serious noncompliance with protocol, unacceptable toxicity, or a doctor’s or patient’s request to stop treatment. The patients had a median of four previous chemotherapy regimens, of which capecitabine was the most common (73%). A total of 16% had HER2-positive disease, and 19% had triple-negative breast cancer.
The most common overall adverse event was asthenia or fatigue of all grades, which occurred in 54% in the eribulin group and 40% of the control group. The most common hematologic adverse event was neutropenia of all grades in 52% of the eribulin group and 30% of the control group.
About a fourth of both groups experienced serious adverse events. Peripheral neuropathy was the most common cause for discontinuing eribulin, occurring in 5% of 503 patients.
The findings were limited by the range of the therapies in the control group and by the use of overall survival as a primary end point, the researchers noted. But the diversity of the control group might make the findings more generalizable to clinical practice, they added.
"The benefit that eribulin had shown as a single agent in this setting suggests that this drug could become a new standard of care; further evaluation earlier in the natural history of breast cancer is warranted," the researchers wrote.
In an accompanying editorial, Dr. Nancy U. Lin and Dr. Harold J. Burstein wrote that he results of the EMBRACE study raise many questions, including whether some patients or tumor subtypes would benefit from ongoing therapy (Lancet 2011 March 3 [doi: 10.1016/S0140-6736(11)60280-8]).
Dr. Lin and Dr. Burstein, both of Harvard Medical School and the Dana-Farber Cancer Institute, Boston, noted that the relatively modest clinical improvements suggest the need for more information on how the treatment affects symptom control and quality of life.
"In the meantime, EMBRACE provides much-needed, high-level evidence for chemotherapy use in patients with heavily pretreated breast cancer," they wrote. "And that evidence suggests that the methods to treat advanced breast cancer are growing," they wrote.
The study was funded by Eisai, maker of eribulin, and Eisai employees were involved in the study design, data collection, and data analysis. Dr. Cortes has received consultant fees from Eisai and Roche.
Dr. Lin and Dr. Burstein said they had no conflicts of interest.
Eribulin monotherapy achieved "a significant and clinically meaningful improvement" in overall survival, compared with other treatments of choice in women with heavily pretreated metastatic breast cancer, according to pivotal EMBRACE trial data published online by the Lancet on March 3.
Median overall survival rate reached 13.1 months in women treated with eribulin (Halaven), compared with 10.6 months in the control group (P = .041). Median progression-free survival was 3.7 months and 2.2 months, respectively (P = .137) based on an independent review of the intent-to-treat population. Fatal adverse events occurred in 4% of the eribulin patients vs. 7% of the control group.
"To our knowledge, EMBRACE is the first major single-agent study of a cytotoxic or biological agent to show significantly increased survival in patients with such heavily pretreated metastatic breast cancer," said Dr. Javier Cortes of Vall d’Hebron University Hospital and Institute of Oncology in Barcelona and colleagues (Lancet 2011 March 3 [doi: 10.1016/S0140-6736(11)60070-6]).
A non-taxane microtubule inhibitor, eribulin is a synthetic analogue of halichondrin B, a natural product isolated from a sea sponge. The U.S. Food & Drug Administration based its approval of eribulin for women who had received at least two prior treatments, including a taxane and an anthracycline, for metastatic breast cancer on results of the EMBRACE (Eisai Metastatic Breast Cancer Study Assessing Physician’s Choice vs. E7389) study. Findings were originally presented at the American Society of Clinical Oncology annual meeting in 2010.
The open-label study randomized 508 women to eribulin and 254 to a control group; 6 patients in each group discontinued before starting treatment, leaving 503 in the eribulin group and 247 in the control group. The women were aged 18 years and older, with confirmed breast cancer and a history of 2-5 previous chemotherapy regimens.
Patients in the eribulin group received 1.4 mg/m2 eribulin mesylate intravenously for 2-5 minutes on days 1 and 8 of a 21-day cycle. The control group received the physician’s treatment of choice, which could be any single-agent chemotherapy, hormonal therapy, or biologic therapy approved for cancer, and administered according to the local practice.
The researchers assessed tumor response every 8 weeks. Treatment continued until disease progression, serious noncompliance with protocol, unacceptable toxicity, or a doctor’s or patient’s request to stop treatment. The patients had a median of four previous chemotherapy regimens, of which capecitabine was the most common (73%). A total of 16% had HER2-positive disease, and 19% had triple-negative breast cancer.
The most common overall adverse event was asthenia or fatigue of all grades, which occurred in 54% in the eribulin group and 40% of the control group. The most common hematologic adverse event was neutropenia of all grades in 52% of the eribulin group and 30% of the control group.
About a fourth of both groups experienced serious adverse events. Peripheral neuropathy was the most common cause for discontinuing eribulin, occurring in 5% of 503 patients.
The findings were limited by the range of the therapies in the control group and by the use of overall survival as a primary end point, the researchers noted. But the diversity of the control group might make the findings more generalizable to clinical practice, they added.
"The benefit that eribulin had shown as a single agent in this setting suggests that this drug could become a new standard of care; further evaluation earlier in the natural history of breast cancer is warranted," the researchers wrote.
In an accompanying editorial, Dr. Nancy U. Lin and Dr. Harold J. Burstein wrote that he results of the EMBRACE study raise many questions, including whether some patients or tumor subtypes would benefit from ongoing therapy (Lancet 2011 March 3 [doi: 10.1016/S0140-6736(11)60280-8]).
Dr. Lin and Dr. Burstein, both of Harvard Medical School and the Dana-Farber Cancer Institute, Boston, noted that the relatively modest clinical improvements suggest the need for more information on how the treatment affects symptom control and quality of life.
"In the meantime, EMBRACE provides much-needed, high-level evidence for chemotherapy use in patients with heavily pretreated breast cancer," they wrote. "And that evidence suggests that the methods to treat advanced breast cancer are growing," they wrote.
The study was funded by Eisai, maker of eribulin, and Eisai employees were involved in the study design, data collection, and data analysis. Dr. Cortes has received consultant fees from Eisai and Roche.
Dr. Lin and Dr. Burstein said they had no conflicts of interest.
FROM THE LANCET
Major Finding: Median overall survival rate reached 13.1 months in women treated with eribulin, compared with 10.6 months in the control group (P = .041).
Data Source: The EMBRACE trial in 764 women with heavily pretreated advanced and metastatic breast cancer.
Disclosures: The study was funded by Eisai, maker of eribulin, and Eisai employees were involved in the study design, data collection, and data analysis. Dr. Cortes has received consultant fees from Eisai and Roche.
Eribulin Extends Survival of Women With Heavily Pretreated Breast Cancer
Eribulin monotherapy achieved "a significant and clinically meaningful improvement" in overall survival, compared with other treatments of choice in women with heavily pretreated metastatic breast cancer, according to pivotal EMBRACE trial data published online by the Lancet on March 3.
Median overall survival rate reached 13.1 months in women treated with eribulin (Halaven), compared with 10.6 months in the control group (P = .041). Median progression-free survival was 3.7 months and 2.2 months, respectively (P = .137) based on an independent review of the intent-to-treat population. Fatal adverse events occurred in 4% of the eribulin patients vs. 7% of the control group.
"To our knowledge, EMBRACE is the first major single-agent study of a cytotoxic or biological agent to show significantly increased survival in patients with such heavily pretreated metastatic breast cancer," said Dr. Javier Cortes of Vall d’Hebron University Hospital and Institute of Oncology in Barcelona and colleagues (Lancet 2011 March 3 [doi: 10.1016/S0140-6736(11)60070-6]).
A non-taxane microtubule inhibitor, eribulin is a synthetic analogue of halichondrin B, a natural product isolated from a sea sponge. The U.S. Food & Drug Administration based its approval of eribulin for women who had received at least two prior treatments, including a taxane and an anthracycline, for metastatic breast cancer on results of the EMBRACE (Eisai Metastatic Breast Cancer Study Assessing Physician’s Choice vs. E7389) study. Findings were originally presented at the American Society of Clinical Oncology annual meeting in 2010.
The open-label study randomized 508 women to eribulin and 254 to a control group; 6 patients in each group discontinued before starting treatment, leaving 503 in the eribulin group and 247 in the control group. The women were aged 18 years and older, with confirmed breast cancer and a history of 2-5 previous chemotherapy regimens.
Patients in the eribulin group received 1.4 mg/m2 eribulin mesylate intravenously for 2-5 minutes on days 1 and 8 of a 21-day cycle. The control group received the physician’s treatment of choice, which could be any single-agent chemotherapy, hormonal therapy, or biologic therapy approved for cancer, and administered according to the local practice.
The researchers assessed tumor response every 8 weeks. Treatment continued until disease progression, serious noncompliance with protocol, unacceptable toxicity, or a doctor’s or patient’s request to stop treatment. The patients had a median of four previous chemotherapy regimens, of which capecitabine was the most common (73%). A total of 16% had HER2-positive disease, and 19% had triple-negative breast cancer.
The most common overall adverse event was asthenia or fatigue of all grades, which occurred in 54% in the eribulin group and 40% of the control group. The most common hematologic adverse event was neutropenia of all grades in 52% of the eribulin group and 30% of the control group.
About a fourth of both groups experienced serious adverse events. Peripheral neuropathy was the most common cause for discontinuing eribulin, occurring in 5% of 503 patients.
The findings were limited by the range of the therapies in the control group and by the use of overall survival as a primary end point, the researchers noted. But the diversity of the control group might make the findings more generalizable to clinical practice, they added.
"The benefit that eribulin had shown as a single agent in this setting suggests that this drug could become a new standard of care; further evaluation earlier in the natural history of breast cancer is warranted," the researchers wrote.
In an accompanying editorial, Dr. Nancy U. Lin and Dr. Harold J. Burstein wrote that he results of the EMBRACE study raise many questions, including whether some patients or tumor subtypes would benefit from ongoing therapy (Lancet 2011 March 3 [doi: 10.1016/S0140-6736(11)60280-8]).
Dr. Lin and Dr. Burstein, both of Harvard Medical School and the Dana-Farber Cancer Institute, Boston, noted that the relatively modest clinical improvements suggest the need for more information on how the treatment affects symptom control and quality of life.
"In the meantime, EMBRACE provides much-needed, high-level evidence for chemotherapy use in patients with heavily pretreated breast cancer," they wrote. "And that evidence suggests that the methods to treat advanced breast cancer are growing," they wrote.
The study was funded by Eisai, maker of eribulin, and Eisai employees were involved in the study design, data collection, and data analysis. Dr. Cortes has received consultant fees from Eisai and Roche.
Dr. Lin and Dr. Burstein said they had no conflicts of interest.
The results of the EMBRACE study raise many questions, including whether some patients or tumor subtypes would benefit from ongoing therapy, Dr. Nancy U. Lin and Dr. Harold J. Burstein of Harvard Medical School, Boston, wrote in an accompanying editorial (Lancet 2011 March 3 [Epub doi: 10.1016/S0140-6736(11)60280-8]).
The editorialists noted that the relatively modest clinical improvements suggest the need for more information on how the treatment affects symptom control and quality of life.
"In the meantime, EMBRACE provides much-needed, high-level evidence for chemotherapy use in patients with heavily pretreated breast cancer," they wrote. "And that evidence suggests that the methods to treat advanced breast cancer are growing," they said.
Dr. Nancy U. Lin and Dr. Harold J. Burstein are oncologists at Dana-Farber Cancer Institute, and on the faculty of Harvard Medical School. They said they had no conflicts of interest.
The results of the EMBRACE study raise many questions, including whether some patients or tumor subtypes would benefit from ongoing therapy, Dr. Nancy U. Lin and Dr. Harold J. Burstein of Harvard Medical School, Boston, wrote in an accompanying editorial (Lancet 2011 March 3 [Epub doi: 10.1016/S0140-6736(11)60280-8]).
The editorialists noted that the relatively modest clinical improvements suggest the need for more information on how the treatment affects symptom control and quality of life.
"In the meantime, EMBRACE provides much-needed, high-level evidence for chemotherapy use in patients with heavily pretreated breast cancer," they wrote. "And that evidence suggests that the methods to treat advanced breast cancer are growing," they said.
Dr. Nancy U. Lin and Dr. Harold J. Burstein are oncologists at Dana-Farber Cancer Institute, and on the faculty of Harvard Medical School. They said they had no conflicts of interest.
The results of the EMBRACE study raise many questions, including whether some patients or tumor subtypes would benefit from ongoing therapy, Dr. Nancy U. Lin and Dr. Harold J. Burstein of Harvard Medical School, Boston, wrote in an accompanying editorial (Lancet 2011 March 3 [Epub doi: 10.1016/S0140-6736(11)60280-8]).
The editorialists noted that the relatively modest clinical improvements suggest the need for more information on how the treatment affects symptom control and quality of life.
"In the meantime, EMBRACE provides much-needed, high-level evidence for chemotherapy use in patients with heavily pretreated breast cancer," they wrote. "And that evidence suggests that the methods to treat advanced breast cancer are growing," they said.
Dr. Nancy U. Lin and Dr. Harold J. Burstein are oncologists at Dana-Farber Cancer Institute, and on the faculty of Harvard Medical School. They said they had no conflicts of interest.
Eribulin monotherapy achieved "a significant and clinically meaningful improvement" in overall survival, compared with other treatments of choice in women with heavily pretreated metastatic breast cancer, according to pivotal EMBRACE trial data published online by the Lancet on March 3.
Median overall survival rate reached 13.1 months in women treated with eribulin (Halaven), compared with 10.6 months in the control group (P = .041). Median progression-free survival was 3.7 months and 2.2 months, respectively (P = .137) based on an independent review of the intent-to-treat population. Fatal adverse events occurred in 4% of the eribulin patients vs. 7% of the control group.
"To our knowledge, EMBRACE is the first major single-agent study of a cytotoxic or biological agent to show significantly increased survival in patients with such heavily pretreated metastatic breast cancer," said Dr. Javier Cortes of Vall d’Hebron University Hospital and Institute of Oncology in Barcelona and colleagues (Lancet 2011 March 3 [doi: 10.1016/S0140-6736(11)60070-6]).
A non-taxane microtubule inhibitor, eribulin is a synthetic analogue of halichondrin B, a natural product isolated from a sea sponge. The U.S. Food & Drug Administration based its approval of eribulin for women who had received at least two prior treatments, including a taxane and an anthracycline, for metastatic breast cancer on results of the EMBRACE (Eisai Metastatic Breast Cancer Study Assessing Physician’s Choice vs. E7389) study. Findings were originally presented at the American Society of Clinical Oncology annual meeting in 2010.
The open-label study randomized 508 women to eribulin and 254 to a control group; 6 patients in each group discontinued before starting treatment, leaving 503 in the eribulin group and 247 in the control group. The women were aged 18 years and older, with confirmed breast cancer and a history of 2-5 previous chemotherapy regimens.
Patients in the eribulin group received 1.4 mg/m2 eribulin mesylate intravenously for 2-5 minutes on days 1 and 8 of a 21-day cycle. The control group received the physician’s treatment of choice, which could be any single-agent chemotherapy, hormonal therapy, or biologic therapy approved for cancer, and administered according to the local practice.
The researchers assessed tumor response every 8 weeks. Treatment continued until disease progression, serious noncompliance with protocol, unacceptable toxicity, or a doctor’s or patient’s request to stop treatment. The patients had a median of four previous chemotherapy regimens, of which capecitabine was the most common (73%). A total of 16% had HER2-positive disease, and 19% had triple-negative breast cancer.
The most common overall adverse event was asthenia or fatigue of all grades, which occurred in 54% in the eribulin group and 40% of the control group. The most common hematologic adverse event was neutropenia of all grades in 52% of the eribulin group and 30% of the control group.
About a fourth of both groups experienced serious adverse events. Peripheral neuropathy was the most common cause for discontinuing eribulin, occurring in 5% of 503 patients.
The findings were limited by the range of the therapies in the control group and by the use of overall survival as a primary end point, the researchers noted. But the diversity of the control group might make the findings more generalizable to clinical practice, they added.
"The benefit that eribulin had shown as a single agent in this setting suggests that this drug could become a new standard of care; further evaluation earlier in the natural history of breast cancer is warranted," the researchers wrote.
In an accompanying editorial, Dr. Nancy U. Lin and Dr. Harold J. Burstein wrote that he results of the EMBRACE study raise many questions, including whether some patients or tumor subtypes would benefit from ongoing therapy (Lancet 2011 March 3 [doi: 10.1016/S0140-6736(11)60280-8]).
Dr. Lin and Dr. Burstein, both of Harvard Medical School and the Dana-Farber Cancer Institute, Boston, noted that the relatively modest clinical improvements suggest the need for more information on how the treatment affects symptom control and quality of life.
"In the meantime, EMBRACE provides much-needed, high-level evidence for chemotherapy use in patients with heavily pretreated breast cancer," they wrote. "And that evidence suggests that the methods to treat advanced breast cancer are growing," they wrote.
The study was funded by Eisai, maker of eribulin, and Eisai employees were involved in the study design, data collection, and data analysis. Dr. Cortes has received consultant fees from Eisai and Roche.
Dr. Lin and Dr. Burstein said they had no conflicts of interest.
Eribulin monotherapy achieved "a significant and clinically meaningful improvement" in overall survival, compared with other treatments of choice in women with heavily pretreated metastatic breast cancer, according to pivotal EMBRACE trial data published online by the Lancet on March 3.
Median overall survival rate reached 13.1 months in women treated with eribulin (Halaven), compared with 10.6 months in the control group (P = .041). Median progression-free survival was 3.7 months and 2.2 months, respectively (P = .137) based on an independent review of the intent-to-treat population. Fatal adverse events occurred in 4% of the eribulin patients vs. 7% of the control group.
"To our knowledge, EMBRACE is the first major single-agent study of a cytotoxic or biological agent to show significantly increased survival in patients with such heavily pretreated metastatic breast cancer," said Dr. Javier Cortes of Vall d’Hebron University Hospital and Institute of Oncology in Barcelona and colleagues (Lancet 2011 March 3 [doi: 10.1016/S0140-6736(11)60070-6]).
A non-taxane microtubule inhibitor, eribulin is a synthetic analogue of halichondrin B, a natural product isolated from a sea sponge. The U.S. Food & Drug Administration based its approval of eribulin for women who had received at least two prior treatments, including a taxane and an anthracycline, for metastatic breast cancer on results of the EMBRACE (Eisai Metastatic Breast Cancer Study Assessing Physician’s Choice vs. E7389) study. Findings were originally presented at the American Society of Clinical Oncology annual meeting in 2010.
The open-label study randomized 508 women to eribulin and 254 to a control group; 6 patients in each group discontinued before starting treatment, leaving 503 in the eribulin group and 247 in the control group. The women were aged 18 years and older, with confirmed breast cancer and a history of 2-5 previous chemotherapy regimens.
Patients in the eribulin group received 1.4 mg/m2 eribulin mesylate intravenously for 2-5 minutes on days 1 and 8 of a 21-day cycle. The control group received the physician’s treatment of choice, which could be any single-agent chemotherapy, hormonal therapy, or biologic therapy approved for cancer, and administered according to the local practice.
The researchers assessed tumor response every 8 weeks. Treatment continued until disease progression, serious noncompliance with protocol, unacceptable toxicity, or a doctor’s or patient’s request to stop treatment. The patients had a median of four previous chemotherapy regimens, of which capecitabine was the most common (73%). A total of 16% had HER2-positive disease, and 19% had triple-negative breast cancer.
The most common overall adverse event was asthenia or fatigue of all grades, which occurred in 54% in the eribulin group and 40% of the control group. The most common hematologic adverse event was neutropenia of all grades in 52% of the eribulin group and 30% of the control group.
About a fourth of both groups experienced serious adverse events. Peripheral neuropathy was the most common cause for discontinuing eribulin, occurring in 5% of 503 patients.
The findings were limited by the range of the therapies in the control group and by the use of overall survival as a primary end point, the researchers noted. But the diversity of the control group might make the findings more generalizable to clinical practice, they added.
"The benefit that eribulin had shown as a single agent in this setting suggests that this drug could become a new standard of care; further evaluation earlier in the natural history of breast cancer is warranted," the researchers wrote.
In an accompanying editorial, Dr. Nancy U. Lin and Dr. Harold J. Burstein wrote that he results of the EMBRACE study raise many questions, including whether some patients or tumor subtypes would benefit from ongoing therapy (Lancet 2011 March 3 [doi: 10.1016/S0140-6736(11)60280-8]).
Dr. Lin and Dr. Burstein, both of Harvard Medical School and the Dana-Farber Cancer Institute, Boston, noted that the relatively modest clinical improvements suggest the need for more information on how the treatment affects symptom control and quality of life.
"In the meantime, EMBRACE provides much-needed, high-level evidence for chemotherapy use in patients with heavily pretreated breast cancer," they wrote. "And that evidence suggests that the methods to treat advanced breast cancer are growing," they wrote.
The study was funded by Eisai, maker of eribulin, and Eisai employees were involved in the study design, data collection, and data analysis. Dr. Cortes has received consultant fees from Eisai and Roche.
Dr. Lin and Dr. Burstein said they had no conflicts of interest.
FROM THE LANCET
Major Finding: Median overall survival rate reached 13.1 months in women treated with eribulin, compared with 10.6 months in the control group (P = .041).
Data Source: The EMBRACE trial in 764 women with heavily pretreated advanced and metastatic breast cancer.
Disclosures: The study was funded by Eisai, maker of eribulin, and Eisai employees were involved in the study design, data collection, and data analysis. Dr. Cortes has received consultant fees from Eisai and Roche.
Women Remain Underrepresented in Heart Device Studies
Women are underrepresented in safety and efficacy studies for high-risk cardiovascular devices, based on a review of 123 studies for 78 devices. The results were published online March 1 in Circulation: Cardiovascular Quality and Outcomes.
"There have been no analyses of gender bias in studies submitted for [Food and Drug Administration] approval of medical devices," despite a 1994 requirement to do so, said Dr. Sanket S. Dhruva of the University of California, San Francisco, and colleagues.
The researchers reviewed data involving high-risk cardiovascular devices that received premarket approval from the FDA from 2000 through 2007.
Overall, 34 studies (28%) did not report the sex of the study participants, and 67% of the participants in the studies that reported gender were male. The number of women enrolled in the studies remained stable over the 8-year study period, the researchers noted (Circ. Cardiovasc. Qual. Outcomes 2011;4:165-71.
Of the 123 studies, 107 were reviewed for gender bias comments or analysis. One study that included such a comment and 15 studies that did not include gender bias comments were excluded because they had fewer than 50 patients.
The FDA requires gender bias comments and analyses for all studies, but only 50 (41%) of the studies in this review included a gender bias comment or analysis. Of these, 47 (94%) included analysis of the findings by gender, and 12 (26%) of these described any gender-based difference in device safety or efficacy.
Of the 57 studies without a gender bias comment, 6 (11%) reported sex-specific data or analysis.
In 36 (29%) of the studies, the researchers wrote that the gender distribution in the study reflected the disease distribution or the referral population for the device.
In addition, 22 of 123 studies (18%) included a statement citing a random selection of men vs. women or that no gender selection bias occurred.
In 80 studies, the total number of patients and the percentage of men were identified, and the researchers found discrepancies in 38 (48%) of these. Most (84%) of the discrepancies were due to larger numbers of men included in the study than the percentage suggested.
Few studies provided raw data or statistical analyses in the FDA Summaries of Safety and Effectiveness Data (SSEDs), the researchers noted.
The study findings were limited by the inclusion of only publicly available SSEDs and meeting materials from the Circulatory System Devices Panel. However, the FDA held workshops in 2008 on "the study and analysis of sex/gender differences in cardiovascular medical device trials reviewed by the FDA," which suggests efforts to enroll more women in cardiovascular device studies and to report gender-specific data, the researchers noted.
Dr. Dhruva had no financial conflicts to disclose.
Safety and effectiveness for medical devices is often different in men and women, due to differences in body size, physiology, and bleeding tendencies. For these reasons, in 1994, the FDA issued a directive stating that examination for gender bias needs to be addressed in every premarket application.
It is not clear why it would be harder to enroll women than men. Many trials, such as the Women’s Health Initiative and others, have enrolled many women.
I think the enrollment process needs to follow the 1994 FDA directive, which says that studies should include women in numbers to reflect their underlying distribution of the disease, and analyze the results by sex so that we can learn whether the device is more effective or less effective in women.
There is increasing interest in an individualized informed consent process. I think it is important to consider whether to include informing women that the data for most devices is based on results from mostly male trials and women’s risks and benefits are likely different. For now, cardiologists have to use their judgment and the data available to make the best decision for each patient. We should support the Heart Disease Education, Analysis Research, and Treatment for Women Act, which is soon to be introduced in Congress and would mandate sex-specific reporting.
Rita Redberg, M.D., is the director of women’s cardiovascular services and professor of medicine at the University of California, San Francisco. She is the corresponding coauthor of the study. Dr. Redberg has no relevant financial interests.
Safety and effectiveness for medical devices is often different in men and women, due to differences in body size, physiology, and bleeding tendencies. For these reasons, in 1994, the FDA issued a directive stating that examination for gender bias needs to be addressed in every premarket application.
It is not clear why it would be harder to enroll women than men. Many trials, such as the Women’s Health Initiative and others, have enrolled many women.
I think the enrollment process needs to follow the 1994 FDA directive, which says that studies should include women in numbers to reflect their underlying distribution of the disease, and analyze the results by sex so that we can learn whether the device is more effective or less effective in women.
There is increasing interest in an individualized informed consent process. I think it is important to consider whether to include informing women that the data for most devices is based on results from mostly male trials and women’s risks and benefits are likely different. For now, cardiologists have to use their judgment and the data available to make the best decision for each patient. We should support the Heart Disease Education, Analysis Research, and Treatment for Women Act, which is soon to be introduced in Congress and would mandate sex-specific reporting.
Rita Redberg, M.D., is the director of women’s cardiovascular services and professor of medicine at the University of California, San Francisco. She is the corresponding coauthor of the study. Dr. Redberg has no relevant financial interests.
Safety and effectiveness for medical devices is often different in men and women, due to differences in body size, physiology, and bleeding tendencies. For these reasons, in 1994, the FDA issued a directive stating that examination for gender bias needs to be addressed in every premarket application.
It is not clear why it would be harder to enroll women than men. Many trials, such as the Women’s Health Initiative and others, have enrolled many women.
I think the enrollment process needs to follow the 1994 FDA directive, which says that studies should include women in numbers to reflect their underlying distribution of the disease, and analyze the results by sex so that we can learn whether the device is more effective or less effective in women.
There is increasing interest in an individualized informed consent process. I think it is important to consider whether to include informing women that the data for most devices is based on results from mostly male trials and women’s risks and benefits are likely different. For now, cardiologists have to use their judgment and the data available to make the best decision for each patient. We should support the Heart Disease Education, Analysis Research, and Treatment for Women Act, which is soon to be introduced in Congress and would mandate sex-specific reporting.
Rita Redberg, M.D., is the director of women’s cardiovascular services and professor of medicine at the University of California, San Francisco. She is the corresponding coauthor of the study. Dr. Redberg has no relevant financial interests.
Women are underrepresented in safety and efficacy studies for high-risk cardiovascular devices, based on a review of 123 studies for 78 devices. The results were published online March 1 in Circulation: Cardiovascular Quality and Outcomes.
"There have been no analyses of gender bias in studies submitted for [Food and Drug Administration] approval of medical devices," despite a 1994 requirement to do so, said Dr. Sanket S. Dhruva of the University of California, San Francisco, and colleagues.
The researchers reviewed data involving high-risk cardiovascular devices that received premarket approval from the FDA from 2000 through 2007.
Overall, 34 studies (28%) did not report the sex of the study participants, and 67% of the participants in the studies that reported gender were male. The number of women enrolled in the studies remained stable over the 8-year study period, the researchers noted (Circ. Cardiovasc. Qual. Outcomes 2011;4:165-71.
Of the 123 studies, 107 were reviewed for gender bias comments or analysis. One study that included such a comment and 15 studies that did not include gender bias comments were excluded because they had fewer than 50 patients.
The FDA requires gender bias comments and analyses for all studies, but only 50 (41%) of the studies in this review included a gender bias comment or analysis. Of these, 47 (94%) included analysis of the findings by gender, and 12 (26%) of these described any gender-based difference in device safety or efficacy.
Of the 57 studies without a gender bias comment, 6 (11%) reported sex-specific data or analysis.
In 36 (29%) of the studies, the researchers wrote that the gender distribution in the study reflected the disease distribution or the referral population for the device.
In addition, 22 of 123 studies (18%) included a statement citing a random selection of men vs. women or that no gender selection bias occurred.
In 80 studies, the total number of patients and the percentage of men were identified, and the researchers found discrepancies in 38 (48%) of these. Most (84%) of the discrepancies were due to larger numbers of men included in the study than the percentage suggested.
Few studies provided raw data or statistical analyses in the FDA Summaries of Safety and Effectiveness Data (SSEDs), the researchers noted.
The study findings were limited by the inclusion of only publicly available SSEDs and meeting materials from the Circulatory System Devices Panel. However, the FDA held workshops in 2008 on "the study and analysis of sex/gender differences in cardiovascular medical device trials reviewed by the FDA," which suggests efforts to enroll more women in cardiovascular device studies and to report gender-specific data, the researchers noted.
Dr. Dhruva had no financial conflicts to disclose.
Women are underrepresented in safety and efficacy studies for high-risk cardiovascular devices, based on a review of 123 studies for 78 devices. The results were published online March 1 in Circulation: Cardiovascular Quality and Outcomes.
"There have been no analyses of gender bias in studies submitted for [Food and Drug Administration] approval of medical devices," despite a 1994 requirement to do so, said Dr. Sanket S. Dhruva of the University of California, San Francisco, and colleagues.
The researchers reviewed data involving high-risk cardiovascular devices that received premarket approval from the FDA from 2000 through 2007.
Overall, 34 studies (28%) did not report the sex of the study participants, and 67% of the participants in the studies that reported gender were male. The number of women enrolled in the studies remained stable over the 8-year study period, the researchers noted (Circ. Cardiovasc. Qual. Outcomes 2011;4:165-71.
Of the 123 studies, 107 were reviewed for gender bias comments or analysis. One study that included such a comment and 15 studies that did not include gender bias comments were excluded because they had fewer than 50 patients.
The FDA requires gender bias comments and analyses for all studies, but only 50 (41%) of the studies in this review included a gender bias comment or analysis. Of these, 47 (94%) included analysis of the findings by gender, and 12 (26%) of these described any gender-based difference in device safety or efficacy.
Of the 57 studies without a gender bias comment, 6 (11%) reported sex-specific data or analysis.
In 36 (29%) of the studies, the researchers wrote that the gender distribution in the study reflected the disease distribution or the referral population for the device.
In addition, 22 of 123 studies (18%) included a statement citing a random selection of men vs. women or that no gender selection bias occurred.
In 80 studies, the total number of patients and the percentage of men were identified, and the researchers found discrepancies in 38 (48%) of these. Most (84%) of the discrepancies were due to larger numbers of men included in the study than the percentage suggested.
Few studies provided raw data or statistical analyses in the FDA Summaries of Safety and Effectiveness Data (SSEDs), the researchers noted.
The study findings were limited by the inclusion of only publicly available SSEDs and meeting materials from the Circulatory System Devices Panel. However, the FDA held workshops in 2008 on "the study and analysis of sex/gender differences in cardiovascular medical device trials reviewed by the FDA," which suggests efforts to enroll more women in cardiovascular device studies and to report gender-specific data, the researchers noted.
Dr. Dhruva had no financial conflicts to disclose.
FROM CIRCULATION: CARDIOVASCULAR QUALITY AND OUTCOMES
Women Remain Underrepresented in Heart Device Studies
Women are underrepresented in safety and efficacy studies for high-risk cardiovascular devices, based on a review of 123 studies for 78 devices. The results were published online March 1 in Circulation: Cardiovascular Quality and Outcomes.
"There have been no analyses of gender bias in studies submitted for [Food and Drug Administration] approval of medical devices," despite a 1994 requirement to do so, said Dr. Sanket S. Dhruva of the University of California, San Francisco, and colleagues.
The researchers reviewed data involving high-risk cardiovascular devices that received premarket approval from the FDA from 2000 through 2007.
Overall, 34 studies (28%) did not report the sex of the study participants, and 67% of the participants in the studies that reported gender were male. The number of women enrolled in the studies remained stable over the 8-year study period, the researchers noted (Circ. Cardiovasc. Qual. Outcomes 2011;4:165-71.
Of the 123 studies, 107 were reviewed for gender bias comments or analysis. One study that included such a comment and 15 studies that did not include gender bias comments were excluded because they had fewer than 50 patients.
The FDA requires gender bias comments and analyses for all studies, but only 50 (41%) of the studies in this review included a gender bias comment or analysis. Of these, 47 (94%) included analysis of the findings by gender, and 12 (26%) of these described any gender-based difference in device safety or efficacy.
Of the 57 studies without a gender bias comment, 6 (11%) reported sex-specific data or analysis.
In 36 (29%) of the studies, the researchers wrote that the gender distribution in the study reflected the disease distribution or the referral population for the device.
In addition, 22 of 123 studies (18%) included a statement citing a random selection of men vs. women or that no gender selection bias occurred.
In 80 studies, the total number of patients and the percentage of men were identified, and the researchers found discrepancies in 38 (48%) of these. Most (84%) of the discrepancies were due to larger numbers of men included in the study than the percentage suggested.
Few studies provided raw data or statistical analyses in the FDA Summaries of Safety and Effectiveness Data (SSEDs), the researchers noted.
The study findings were limited by the inclusion of only publicly available SSEDs and meeting materials from the Circulatory System Devices Panel. However, the FDA held workshops in 2008 on "the study and analysis of sex/gender differences in cardiovascular medical device trials reviewed by the FDA," which suggests efforts to enroll more women in cardiovascular device studies and to report gender-specific data, the researchers noted.
Dr. Dhruva had no financial conflicts to disclose.
Safety and effectiveness for medical devices is often different in men and women, due to differences in body size, physiology, and bleeding tendencies. For these reasons, in 1994, the FDA issued a directive stating that examination for gender bias needs to be addressed in every premarket application.
It is not clear why it would be harder to enroll women than men. Many trials, such as the Women’s Health Initiative and others, have enrolled many women.
I think the enrollment process needs to follow the 1994 FDA directive, which says that studies should include women in numbers to reflect their underlying distribution of the disease, and analyze the results by sex so that we can learn whether the device is more effective or less effective in women.
There is increasing interest in an individualized informed consent process. I think it is important to consider whether to include informing women that the data for most devices is based on results from mostly male trials and women’s risks and benefits are likely different. For now, cardiologists have to use their judgment and the data available to make the best decision for each patient. We should support the Heart Disease Education, Analysis Research, and Treatment for Women Act, which is soon to be introduced in Congress and would mandate sex-specific reporting.
Rita Redberg, M.D., is the director of women’s cardiovascular services and professor of medicine at the University of California, San Francisco. She is the corresponding coauthor of the study. Dr. Redberg has no relevant financial interests.
Safety and effectiveness for medical devices is often different in men and women, due to differences in body size, physiology, and bleeding tendencies. For these reasons, in 1994, the FDA issued a directive stating that examination for gender bias needs to be addressed in every premarket application.
It is not clear why it would be harder to enroll women than men. Many trials, such as the Women’s Health Initiative and others, have enrolled many women.
I think the enrollment process needs to follow the 1994 FDA directive, which says that studies should include women in numbers to reflect their underlying distribution of the disease, and analyze the results by sex so that we can learn whether the device is more effective or less effective in women.
There is increasing interest in an individualized informed consent process. I think it is important to consider whether to include informing women that the data for most devices is based on results from mostly male trials and women’s risks and benefits are likely different. For now, cardiologists have to use their judgment and the data available to make the best decision for each patient. We should support the Heart Disease Education, Analysis Research, and Treatment for Women Act, which is soon to be introduced in Congress and would mandate sex-specific reporting.
Rita Redberg, M.D., is the director of women’s cardiovascular services and professor of medicine at the University of California, San Francisco. She is the corresponding coauthor of the study. Dr. Redberg has no relevant financial interests.
Safety and effectiveness for medical devices is often different in men and women, due to differences in body size, physiology, and bleeding tendencies. For these reasons, in 1994, the FDA issued a directive stating that examination for gender bias needs to be addressed in every premarket application.
It is not clear why it would be harder to enroll women than men. Many trials, such as the Women’s Health Initiative and others, have enrolled many women.
I think the enrollment process needs to follow the 1994 FDA directive, which says that studies should include women in numbers to reflect their underlying distribution of the disease, and analyze the results by sex so that we can learn whether the device is more effective or less effective in women.
There is increasing interest in an individualized informed consent process. I think it is important to consider whether to include informing women that the data for most devices is based on results from mostly male trials and women’s risks and benefits are likely different. For now, cardiologists have to use their judgment and the data available to make the best decision for each patient. We should support the Heart Disease Education, Analysis Research, and Treatment for Women Act, which is soon to be introduced in Congress and would mandate sex-specific reporting.
Rita Redberg, M.D., is the director of women’s cardiovascular services and professor of medicine at the University of California, San Francisco. She is the corresponding coauthor of the study. Dr. Redberg has no relevant financial interests.
Women are underrepresented in safety and efficacy studies for high-risk cardiovascular devices, based on a review of 123 studies for 78 devices. The results were published online March 1 in Circulation: Cardiovascular Quality and Outcomes.
"There have been no analyses of gender bias in studies submitted for [Food and Drug Administration] approval of medical devices," despite a 1994 requirement to do so, said Dr. Sanket S. Dhruva of the University of California, San Francisco, and colleagues.
The researchers reviewed data involving high-risk cardiovascular devices that received premarket approval from the FDA from 2000 through 2007.
Overall, 34 studies (28%) did not report the sex of the study participants, and 67% of the participants in the studies that reported gender were male. The number of women enrolled in the studies remained stable over the 8-year study period, the researchers noted (Circ. Cardiovasc. Qual. Outcomes 2011;4:165-71.
Of the 123 studies, 107 were reviewed for gender bias comments or analysis. One study that included such a comment and 15 studies that did not include gender bias comments were excluded because they had fewer than 50 patients.
The FDA requires gender bias comments and analyses for all studies, but only 50 (41%) of the studies in this review included a gender bias comment or analysis. Of these, 47 (94%) included analysis of the findings by gender, and 12 (26%) of these described any gender-based difference in device safety or efficacy.
Of the 57 studies without a gender bias comment, 6 (11%) reported sex-specific data or analysis.
In 36 (29%) of the studies, the researchers wrote that the gender distribution in the study reflected the disease distribution or the referral population for the device.
In addition, 22 of 123 studies (18%) included a statement citing a random selection of men vs. women or that no gender selection bias occurred.
In 80 studies, the total number of patients and the percentage of men were identified, and the researchers found discrepancies in 38 (48%) of these. Most (84%) of the discrepancies were due to larger numbers of men included in the study than the percentage suggested.
Few studies provided raw data or statistical analyses in the FDA Summaries of Safety and Effectiveness Data (SSEDs), the researchers noted.
The study findings were limited by the inclusion of only publicly available SSEDs and meeting materials from the Circulatory System Devices Panel. However, the FDA held workshops in 2008 on "the study and analysis of sex/gender differences in cardiovascular medical device trials reviewed by the FDA," which suggests efforts to enroll more women in cardiovascular device studies and to report gender-specific data, the researchers noted.
Dr. Dhruva had no financial conflicts to disclose.
Women are underrepresented in safety and efficacy studies for high-risk cardiovascular devices, based on a review of 123 studies for 78 devices. The results were published online March 1 in Circulation: Cardiovascular Quality and Outcomes.
"There have been no analyses of gender bias in studies submitted for [Food and Drug Administration] approval of medical devices," despite a 1994 requirement to do so, said Dr. Sanket S. Dhruva of the University of California, San Francisco, and colleagues.
The researchers reviewed data involving high-risk cardiovascular devices that received premarket approval from the FDA from 2000 through 2007.
Overall, 34 studies (28%) did not report the sex of the study participants, and 67% of the participants in the studies that reported gender were male. The number of women enrolled in the studies remained stable over the 8-year study period, the researchers noted (Circ. Cardiovasc. Qual. Outcomes 2011;4:165-71.
Of the 123 studies, 107 were reviewed for gender bias comments or analysis. One study that included such a comment and 15 studies that did not include gender bias comments were excluded because they had fewer than 50 patients.
The FDA requires gender bias comments and analyses for all studies, but only 50 (41%) of the studies in this review included a gender bias comment or analysis. Of these, 47 (94%) included analysis of the findings by gender, and 12 (26%) of these described any gender-based difference in device safety or efficacy.
Of the 57 studies without a gender bias comment, 6 (11%) reported sex-specific data or analysis.
In 36 (29%) of the studies, the researchers wrote that the gender distribution in the study reflected the disease distribution or the referral population for the device.
In addition, 22 of 123 studies (18%) included a statement citing a random selection of men vs. women or that no gender selection bias occurred.
In 80 studies, the total number of patients and the percentage of men were identified, and the researchers found discrepancies in 38 (48%) of these. Most (84%) of the discrepancies were due to larger numbers of men included in the study than the percentage suggested.
Few studies provided raw data or statistical analyses in the FDA Summaries of Safety and Effectiveness Data (SSEDs), the researchers noted.
The study findings were limited by the inclusion of only publicly available SSEDs and meeting materials from the Circulatory System Devices Panel. However, the FDA held workshops in 2008 on "the study and analysis of sex/gender differences in cardiovascular medical device trials reviewed by the FDA," which suggests efforts to enroll more women in cardiovascular device studies and to report gender-specific data, the researchers noted.
Dr. Dhruva had no financial conflicts to disclose.
FROM CIRCULATION: CARDIOVASCULAR QUALITY AND OUTCOMES
Women Remain Underrepresented in Heart Device Studies
Women are underrepresented in safety and efficacy studies for high-risk cardiovascular devices, based on a review of 123 studies for 78 devices. The results were published online March 1 in Circulation: Cardiovascular Quality and Outcomes.
"There have been no analyses of gender bias in studies submitted for [Food and Drug Administration] approval of medical devices," despite a 1994 requirement to do so, said Dr. Sanket S. Dhruva of the University of California, San Francisco, and colleagues.
The researchers reviewed data involving high-risk cardiovascular devices that received premarket approval from the FDA from 2000 through 2007.
Overall, 34 studies (28%) did not report the sex of the study participants, and 67% of the participants in the studies that reported gender were male. The number of women enrolled in the studies remained stable over the 8-year study period, the researchers noted (Circ. Cardiovasc. Qual. Outcomes 2011;4:165-71.
Of the 123 studies, 107 were reviewed for gender bias comments or analysis. One study that included such a comment and 15 studies that did not include gender bias comments were excluded because they had fewer than 50 patients.
The FDA requires gender bias comments and analyses for all studies, but only 50 (41%) of the studies in this review included a gender bias comment or analysis. Of these, 47 (94%) included analysis of the findings by gender, and 12 (26%) of these described any gender-based difference in device safety or efficacy.
Of the 57 studies without a gender bias comment, 6 (11%) reported sex-specific data or analysis.
In 36 (29%) of the studies, the researchers wrote that the gender distribution in the study reflected the disease distribution or the referral population for the device.
In addition, 22 of 123 studies (18%) included a statement citing a random selection of men vs. women or that no gender selection bias occurred.
In 80 studies, the total number of patients and the percentage of men were identified, and the researchers found discrepancies in 38 (48%) of these. Most (84%) of the discrepancies were due to larger numbers of men included in the study than the percentage suggested.
Few studies provided raw data or statistical analyses in the FDA Summaries of Safety and Effectiveness Data (SSEDs), the researchers noted.
The study findings were limited by the inclusion of only publicly available SSEDs and meeting materials from the Circulatory System Devices Panel. However, the FDA held workshops in 2008 on "the study and analysis of sex/gender differences in cardiovascular medical device trials reviewed by the FDA," which suggests efforts to enroll more women in cardiovascular device studies and to report gender-specific data, the researchers noted.
Dr. Dhruva had no financial conflicts to disclose.
Safety and effectiveness for medical devices is often different in men and women, due to differences in body size, physiology, and bleeding tendencies. For these reasons, in 1994, the FDA issued a directive stating that examination for gender bias needs to be addressed in every premarket application.
It is not clear why it would be harder to enroll women than men. Many trials, such as the Women’s Health Initiative and others, have enrolled many women.
I think the enrollment process needs to follow the 1994 FDA directive, which says that studies should include women in numbers to reflect their underlying distribution of the disease, and analyze the results by sex so that we can learn whether the device is more effective or less effective in women.
There is increasing interest in an individualized informed consent process. I think it is important to consider whether to include informing women that the data for most devices is based on results from mostly male trials and women’s risks and benefits are likely different. For now, cardiologists have to use their judgment and the data available to make the best decision for each patient. We should support the Heart Disease Education, Analysis Research, and Treatment for Women Act, which is soon to be introduced in Congress and would mandate sex-specific reporting.
Rita Redberg, M.D., is the director of women’s cardiovascular services and professor of medicine at the University of California, San Francisco. She is the corresponding coauthor of the study. Dr. Redberg has no relevant financial interests.
Safety and effectiveness for medical devices is often different in men and women, due to differences in body size, physiology, and bleeding tendencies. For these reasons, in 1994, the FDA issued a directive stating that examination for gender bias needs to be addressed in every premarket application.
It is not clear why it would be harder to enroll women than men. Many trials, such as the Women’s Health Initiative and others, have enrolled many women.
I think the enrollment process needs to follow the 1994 FDA directive, which says that studies should include women in numbers to reflect their underlying distribution of the disease, and analyze the results by sex so that we can learn whether the device is more effective or less effective in women.
There is increasing interest in an individualized informed consent process. I think it is important to consider whether to include informing women that the data for most devices is based on results from mostly male trials and women’s risks and benefits are likely different. For now, cardiologists have to use their judgment and the data available to make the best decision for each patient. We should support the Heart Disease Education, Analysis Research, and Treatment for Women Act, which is soon to be introduced in Congress and would mandate sex-specific reporting.
Rita Redberg, M.D., is the director of women’s cardiovascular services and professor of medicine at the University of California, San Francisco. She is the corresponding coauthor of the study. Dr. Redberg has no relevant financial interests.
Safety and effectiveness for medical devices is often different in men and women, due to differences in body size, physiology, and bleeding tendencies. For these reasons, in 1994, the FDA issued a directive stating that examination for gender bias needs to be addressed in every premarket application.
It is not clear why it would be harder to enroll women than men. Many trials, such as the Women’s Health Initiative and others, have enrolled many women.
I think the enrollment process needs to follow the 1994 FDA directive, which says that studies should include women in numbers to reflect their underlying distribution of the disease, and analyze the results by sex so that we can learn whether the device is more effective or less effective in women.
There is increasing interest in an individualized informed consent process. I think it is important to consider whether to include informing women that the data for most devices is based on results from mostly male trials and women’s risks and benefits are likely different. For now, cardiologists have to use their judgment and the data available to make the best decision for each patient. We should support the Heart Disease Education, Analysis Research, and Treatment for Women Act, which is soon to be introduced in Congress and would mandate sex-specific reporting.
Rita Redberg, M.D., is the director of women’s cardiovascular services and professor of medicine at the University of California, San Francisco. She is the corresponding coauthor of the study. Dr. Redberg has no relevant financial interests.
Women are underrepresented in safety and efficacy studies for high-risk cardiovascular devices, based on a review of 123 studies for 78 devices. The results were published online March 1 in Circulation: Cardiovascular Quality and Outcomes.
"There have been no analyses of gender bias in studies submitted for [Food and Drug Administration] approval of medical devices," despite a 1994 requirement to do so, said Dr. Sanket S. Dhruva of the University of California, San Francisco, and colleagues.
The researchers reviewed data involving high-risk cardiovascular devices that received premarket approval from the FDA from 2000 through 2007.
Overall, 34 studies (28%) did not report the sex of the study participants, and 67% of the participants in the studies that reported gender were male. The number of women enrolled in the studies remained stable over the 8-year study period, the researchers noted (Circ. Cardiovasc. Qual. Outcomes 2011;4:165-71.
Of the 123 studies, 107 were reviewed for gender bias comments or analysis. One study that included such a comment and 15 studies that did not include gender bias comments were excluded because they had fewer than 50 patients.
The FDA requires gender bias comments and analyses for all studies, but only 50 (41%) of the studies in this review included a gender bias comment or analysis. Of these, 47 (94%) included analysis of the findings by gender, and 12 (26%) of these described any gender-based difference in device safety or efficacy.
Of the 57 studies without a gender bias comment, 6 (11%) reported sex-specific data or analysis.
In 36 (29%) of the studies, the researchers wrote that the gender distribution in the study reflected the disease distribution or the referral population for the device.
In addition, 22 of 123 studies (18%) included a statement citing a random selection of men vs. women or that no gender selection bias occurred.
In 80 studies, the total number of patients and the percentage of men were identified, and the researchers found discrepancies in 38 (48%) of these. Most (84%) of the discrepancies were due to larger numbers of men included in the study than the percentage suggested.
Few studies provided raw data or statistical analyses in the FDA Summaries of Safety and Effectiveness Data (SSEDs), the researchers noted.
The study findings were limited by the inclusion of only publicly available SSEDs and meeting materials from the Circulatory System Devices Panel. However, the FDA held workshops in 2008 on "the study and analysis of sex/gender differences in cardiovascular medical device trials reviewed by the FDA," which suggests efforts to enroll more women in cardiovascular device studies and to report gender-specific data, the researchers noted.
Dr. Dhruva had no financial conflicts to disclose.
Women are underrepresented in safety and efficacy studies for high-risk cardiovascular devices, based on a review of 123 studies for 78 devices. The results were published online March 1 in Circulation: Cardiovascular Quality and Outcomes.
"There have been no analyses of gender bias in studies submitted for [Food and Drug Administration] approval of medical devices," despite a 1994 requirement to do so, said Dr. Sanket S. Dhruva of the University of California, San Francisco, and colleagues.
The researchers reviewed data involving high-risk cardiovascular devices that received premarket approval from the FDA from 2000 through 2007.
Overall, 34 studies (28%) did not report the sex of the study participants, and 67% of the participants in the studies that reported gender were male. The number of women enrolled in the studies remained stable over the 8-year study period, the researchers noted (Circ. Cardiovasc. Qual. Outcomes 2011;4:165-71.
Of the 123 studies, 107 were reviewed for gender bias comments or analysis. One study that included such a comment and 15 studies that did not include gender bias comments were excluded because they had fewer than 50 patients.
The FDA requires gender bias comments and analyses for all studies, but only 50 (41%) of the studies in this review included a gender bias comment or analysis. Of these, 47 (94%) included analysis of the findings by gender, and 12 (26%) of these described any gender-based difference in device safety or efficacy.
Of the 57 studies without a gender bias comment, 6 (11%) reported sex-specific data or analysis.
In 36 (29%) of the studies, the researchers wrote that the gender distribution in the study reflected the disease distribution or the referral population for the device.
In addition, 22 of 123 studies (18%) included a statement citing a random selection of men vs. women or that no gender selection bias occurred.
In 80 studies, the total number of patients and the percentage of men were identified, and the researchers found discrepancies in 38 (48%) of these. Most (84%) of the discrepancies were due to larger numbers of men included in the study than the percentage suggested.
Few studies provided raw data or statistical analyses in the FDA Summaries of Safety and Effectiveness Data (SSEDs), the researchers noted.
The study findings were limited by the inclusion of only publicly available SSEDs and meeting materials from the Circulatory System Devices Panel. However, the FDA held workshops in 2008 on "the study and analysis of sex/gender differences in cardiovascular medical device trials reviewed by the FDA," which suggests efforts to enroll more women in cardiovascular device studies and to report gender-specific data, the researchers noted.
Dr. Dhruva had no financial conflicts to disclose.
FROM CIRCULATION: CARDIOVASCULAR QUALITY AND OUTCOMES
High BP, Lipids Uncontrolled in Many Adults
Approximately 68 million American adults have high blood pressure and 71 million have high cholesterol, and the conditions are uncontrolled in 37 million and 48 million, respectively, according to a Vital Signs report released by the Centers for Disease Control and Prevention.
“Heart disease is the leading killer in America, and the bottom line is that high blood pressure and high cholesterol are out of control for most Americans who have these conditions,” CDC Director Thomas R. Frieden said in a teleconference accompanying the report's release.
High blood pressure and high cholesterol remain top risk factors for life-threatening conditions such as strokes, heart attacks, and vascular diseases, he added.
Controlling high blood pressure and cholesterol is one of the most important things you can do for your patients, Dr. Frieden said. Know how many of your patients have high blood pressure and high cholesterol, what proportion are controlled, and what can be done to help more patients get these conditions under control, he added.
“We have seen many examples of health systems, health programs, and doctors' offices using information technology to support patients and drastically improve the levels of control, and that's something that is needed throughout health care in this country,” Dr. Frieden said.
The report was based on data from the National Health and Nutrition Examination Survey (NHANES) on adults aged 18 years and older. The findings also indicate that about 20 million U.S. adults with high blood pressure and 37 million with high cholesterol are not being treated for these conditions.
The prevalence of control of high blood pressure was 29% among adults without health insurance, and the control of high cholesterol was less than 15% among those with limited access to health care. But at least 80% of individuals with uncontrolled high blood pressure and high cholesterol have health insurance, Dr. Frieden noted.
For those with health insurance, the characteristics of their specific plans are more likely to affect whether they have high blood pressure or high cholesterol under control than are their personal characteristics, he said.
High blood pressure was defined as BP greater than 140/90 mm Hg or reported use of blood pressure–lowering medication. The national prevalence of high blood pressure remained stable over the past decade, altho ugh 70% of those with hypertension were being treated and 46% were being controlled, according to the report.
The criteria for high cholesterol included the use of cholesterol medication or having an LDL cholesterol level of 100 mg/dL or higher for high-risk individuals, 130 mg/dL or higher for intermediate-risk individuals, and 160 mg/dL for those at low risk.
The proportion of adults treated for high cholesterol increased from 28% to 48% over the past decade, and the proportion of those controlling their high cholesterol increased from less than 20% to more than 30%.
The findings were limited by the lack of data on individuals in nursing homes and institutions not included in NHANES databases, the CDC researchers noted.
About 100,000 deaths [in the U.S.] are preventable by simple, low-cost improvements in our ability to control high blood pressure and high cholesterol, said Dr. Frieden. “Better control can save lives and save money.”
The report is online at www.cdc.gov/vitalsigns
Approximately 68 million American adults have high blood pressure and 71 million have high cholesterol, and the conditions are uncontrolled in 37 million and 48 million, respectively, according to a Vital Signs report released by the Centers for Disease Control and Prevention.
“Heart disease is the leading killer in America, and the bottom line is that high blood pressure and high cholesterol are out of control for most Americans who have these conditions,” CDC Director Thomas R. Frieden said in a teleconference accompanying the report's release.
High blood pressure and high cholesterol remain top risk factors for life-threatening conditions such as strokes, heart attacks, and vascular diseases, he added.
Controlling high blood pressure and cholesterol is one of the most important things you can do for your patients, Dr. Frieden said. Know how many of your patients have high blood pressure and high cholesterol, what proportion are controlled, and what can be done to help more patients get these conditions under control, he added.
“We have seen many examples of health systems, health programs, and doctors' offices using information technology to support patients and drastically improve the levels of control, and that's something that is needed throughout health care in this country,” Dr. Frieden said.
The report was based on data from the National Health and Nutrition Examination Survey (NHANES) on adults aged 18 years and older. The findings also indicate that about 20 million U.S. adults with high blood pressure and 37 million with high cholesterol are not being treated for these conditions.
The prevalence of control of high blood pressure was 29% among adults without health insurance, and the control of high cholesterol was less than 15% among those with limited access to health care. But at least 80% of individuals with uncontrolled high blood pressure and high cholesterol have health insurance, Dr. Frieden noted.
For those with health insurance, the characteristics of their specific plans are more likely to affect whether they have high blood pressure or high cholesterol under control than are their personal characteristics, he said.
High blood pressure was defined as BP greater than 140/90 mm Hg or reported use of blood pressure–lowering medication. The national prevalence of high blood pressure remained stable over the past decade, altho ugh 70% of those with hypertension were being treated and 46% were being controlled, according to the report.
The criteria for high cholesterol included the use of cholesterol medication or having an LDL cholesterol level of 100 mg/dL or higher for high-risk individuals, 130 mg/dL or higher for intermediate-risk individuals, and 160 mg/dL for those at low risk.
The proportion of adults treated for high cholesterol increased from 28% to 48% over the past decade, and the proportion of those controlling their high cholesterol increased from less than 20% to more than 30%.
The findings were limited by the lack of data on individuals in nursing homes and institutions not included in NHANES databases, the CDC researchers noted.
About 100,000 deaths [in the U.S.] are preventable by simple, low-cost improvements in our ability to control high blood pressure and high cholesterol, said Dr. Frieden. “Better control can save lives and save money.”
The report is online at www.cdc.gov/vitalsigns
Approximately 68 million American adults have high blood pressure and 71 million have high cholesterol, and the conditions are uncontrolled in 37 million and 48 million, respectively, according to a Vital Signs report released by the Centers for Disease Control and Prevention.
“Heart disease is the leading killer in America, and the bottom line is that high blood pressure and high cholesterol are out of control for most Americans who have these conditions,” CDC Director Thomas R. Frieden said in a teleconference accompanying the report's release.
High blood pressure and high cholesterol remain top risk factors for life-threatening conditions such as strokes, heart attacks, and vascular diseases, he added.
Controlling high blood pressure and cholesterol is one of the most important things you can do for your patients, Dr. Frieden said. Know how many of your patients have high blood pressure and high cholesterol, what proportion are controlled, and what can be done to help more patients get these conditions under control, he added.
“We have seen many examples of health systems, health programs, and doctors' offices using information technology to support patients and drastically improve the levels of control, and that's something that is needed throughout health care in this country,” Dr. Frieden said.
The report was based on data from the National Health and Nutrition Examination Survey (NHANES) on adults aged 18 years and older. The findings also indicate that about 20 million U.S. adults with high blood pressure and 37 million with high cholesterol are not being treated for these conditions.
The prevalence of control of high blood pressure was 29% among adults without health insurance, and the control of high cholesterol was less than 15% among those with limited access to health care. But at least 80% of individuals with uncontrolled high blood pressure and high cholesterol have health insurance, Dr. Frieden noted.
For those with health insurance, the characteristics of their specific plans are more likely to affect whether they have high blood pressure or high cholesterol under control than are their personal characteristics, he said.
High blood pressure was defined as BP greater than 140/90 mm Hg or reported use of blood pressure–lowering medication. The national prevalence of high blood pressure remained stable over the past decade, altho ugh 70% of those with hypertension were being treated and 46% were being controlled, according to the report.
The criteria for high cholesterol included the use of cholesterol medication or having an LDL cholesterol level of 100 mg/dL or higher for high-risk individuals, 130 mg/dL or higher for intermediate-risk individuals, and 160 mg/dL for those at low risk.
The proportion of adults treated for high cholesterol increased from 28% to 48% over the past decade, and the proportion of those controlling their high cholesterol increased from less than 20% to more than 30%.
The findings were limited by the lack of data on individuals in nursing homes and institutions not included in NHANES databases, the CDC researchers noted.
About 100,000 deaths [in the U.S.] are preventable by simple, low-cost improvements in our ability to control high blood pressure and high cholesterol, said Dr. Frieden. “Better control can save lives and save money.”
The report is online at www.cdc.gov/vitalsigns
Found: Most Cost-Effective Down Syndrome Test
Major Finding: Overall, the contingent screening test showed a cost-effectiveness ratio of $26,833 Canadian dollars per case of DS. The next most cost-effective test was the serum integrated screening test, but the incremental cost-effectiveness ratio (ICER) between the serum integrated screening and contingent screening tests was $3,815 Canadian dollars for every DS birth detected.
Data Source: A cost-effective study of Down syndrome screening tests based on a computer model including 110,948 pregnancies.
Disclosures: The journal did not provide any disclosure information.
Contingent screening for prenatal Down syndrome was the most cost-effective stratagem, compared with other screening protocols, based on data from a computer simulation study of 110,948 pregnancies.
Several screening options are available in Canada and the United States, but data to help clinicians choose among the tests are limited, wrote Dr. Jean Gekas of the Centre Hospitalier de l'Université Laval in Quebec City, and colleagues.
The researchers used a computer model to analyze a virtual population of 110,948 pregnant women based on the demographic, genetic, and Down syndrome (DS) phenotype characteristics of the local population in Quebec. The tests included were the combined test, triple test, quadruple test, integrated test, serum integrated test, sequential screening test, contingent screening test, and amniocentesis for women aged 35 years and older (Am. J. Obstet. Gynecol. 2011;204:175.e1-8).
“The contingent strategy seems to be the most cost effective and is associated with an attractive rate of procedure-related euploid miscarriages and unnecessary terminations,” they wrote. “Moreover, this screening option provides a majority of women with reassurance early in gestation and may minimize costs by limiting retesting.”
Overall, the contingent screening test showed a cost-effectiveness ratio of $26,833 Canadian dollars per case of DS. The next most cost-effective test was the serum integrated screening test, but the incremental cost-effectiveness ratio (ICER) between the serum integrated screening and contingent screening tests was $3,815 Canadian dollars for every DS birth detected.
The combined test, currently popular in the United States and Canada, had a slightly higher cost-effectiveness ratio of $47,358 Canadian dollars than does the contingent test, but it allowed 91% of women to be reassured in the first trimester, they said.
Similar results on major outcomes including false positives, unnecessary terminations, and DS pregnancies were observed for contingent tests and several other screening tests. But the contingent screening test was associated with one of the lowest rates of procedure-related miscarriages (10). The contingent test also allowed 78% of patients to be reassured in the first trimester.
The combined test was associated with the highest rate of DS pregnancies in the first trimester (90%), and the highest rates of procedure-related euploid miscarriages (71) and unnecessary terminations (24). The combined test was the most expensive of the tests that followed screening strategies, most likely due to the requirement of a nuchal fold transparency test, and the high rate of false positives and subsequent unnecessary terminations associated with it, Dr. Gekas and associates said.
The computer model showed that the integrated test had the lowest rate of procedure-related miscarriages. However, widespread use of the integrated test would prevent women from being reassured in the first trimester, they noted.
The study was limited by the lack of prospective data and the potential inability to generalize the results across countries, they said. However, “it is unlikely that a large-scale prospective clinical trial comparing these eight screening approaches could rapidly be organized across North America.”
Major Finding: Overall, the contingent screening test showed a cost-effectiveness ratio of $26,833 Canadian dollars per case of DS. The next most cost-effective test was the serum integrated screening test, but the incremental cost-effectiveness ratio (ICER) between the serum integrated screening and contingent screening tests was $3,815 Canadian dollars for every DS birth detected.
Data Source: A cost-effective study of Down syndrome screening tests based on a computer model including 110,948 pregnancies.
Disclosures: The journal did not provide any disclosure information.
Contingent screening for prenatal Down syndrome was the most cost-effective stratagem, compared with other screening protocols, based on data from a computer simulation study of 110,948 pregnancies.
Several screening options are available in Canada and the United States, but data to help clinicians choose among the tests are limited, wrote Dr. Jean Gekas of the Centre Hospitalier de l'Université Laval in Quebec City, and colleagues.
The researchers used a computer model to analyze a virtual population of 110,948 pregnant women based on the demographic, genetic, and Down syndrome (DS) phenotype characteristics of the local population in Quebec. The tests included were the combined test, triple test, quadruple test, integrated test, serum integrated test, sequential screening test, contingent screening test, and amniocentesis for women aged 35 years and older (Am. J. Obstet. Gynecol. 2011;204:175.e1-8).
“The contingent strategy seems to be the most cost effective and is associated with an attractive rate of procedure-related euploid miscarriages and unnecessary terminations,” they wrote. “Moreover, this screening option provides a majority of women with reassurance early in gestation and may minimize costs by limiting retesting.”
Overall, the contingent screening test showed a cost-effectiveness ratio of $26,833 Canadian dollars per case of DS. The next most cost-effective test was the serum integrated screening test, but the incremental cost-effectiveness ratio (ICER) between the serum integrated screening and contingent screening tests was $3,815 Canadian dollars for every DS birth detected.
The combined test, currently popular in the United States and Canada, had a slightly higher cost-effectiveness ratio of $47,358 Canadian dollars than does the contingent test, but it allowed 91% of women to be reassured in the first trimester, they said.
Similar results on major outcomes including false positives, unnecessary terminations, and DS pregnancies were observed for contingent tests and several other screening tests. But the contingent screening test was associated with one of the lowest rates of procedure-related miscarriages (10). The contingent test also allowed 78% of patients to be reassured in the first trimester.
The combined test was associated with the highest rate of DS pregnancies in the first trimester (90%), and the highest rates of procedure-related euploid miscarriages (71) and unnecessary terminations (24). The combined test was the most expensive of the tests that followed screening strategies, most likely due to the requirement of a nuchal fold transparency test, and the high rate of false positives and subsequent unnecessary terminations associated with it, Dr. Gekas and associates said.
The computer model showed that the integrated test had the lowest rate of procedure-related miscarriages. However, widespread use of the integrated test would prevent women from being reassured in the first trimester, they noted.
The study was limited by the lack of prospective data and the potential inability to generalize the results across countries, they said. However, “it is unlikely that a large-scale prospective clinical trial comparing these eight screening approaches could rapidly be organized across North America.”
Major Finding: Overall, the contingent screening test showed a cost-effectiveness ratio of $26,833 Canadian dollars per case of DS. The next most cost-effective test was the serum integrated screening test, but the incremental cost-effectiveness ratio (ICER) between the serum integrated screening and contingent screening tests was $3,815 Canadian dollars for every DS birth detected.
Data Source: A cost-effective study of Down syndrome screening tests based on a computer model including 110,948 pregnancies.
Disclosures: The journal did not provide any disclosure information.
Contingent screening for prenatal Down syndrome was the most cost-effective stratagem, compared with other screening protocols, based on data from a computer simulation study of 110,948 pregnancies.
Several screening options are available in Canada and the United States, but data to help clinicians choose among the tests are limited, wrote Dr. Jean Gekas of the Centre Hospitalier de l'Université Laval in Quebec City, and colleagues.
The researchers used a computer model to analyze a virtual population of 110,948 pregnant women based on the demographic, genetic, and Down syndrome (DS) phenotype characteristics of the local population in Quebec. The tests included were the combined test, triple test, quadruple test, integrated test, serum integrated test, sequential screening test, contingent screening test, and amniocentesis for women aged 35 years and older (Am. J. Obstet. Gynecol. 2011;204:175.e1-8).
“The contingent strategy seems to be the most cost effective and is associated with an attractive rate of procedure-related euploid miscarriages and unnecessary terminations,” they wrote. “Moreover, this screening option provides a majority of women with reassurance early in gestation and may minimize costs by limiting retesting.”
Overall, the contingent screening test showed a cost-effectiveness ratio of $26,833 Canadian dollars per case of DS. The next most cost-effective test was the serum integrated screening test, but the incremental cost-effectiveness ratio (ICER) between the serum integrated screening and contingent screening tests was $3,815 Canadian dollars for every DS birth detected.
The combined test, currently popular in the United States and Canada, had a slightly higher cost-effectiveness ratio of $47,358 Canadian dollars than does the contingent test, but it allowed 91% of women to be reassured in the first trimester, they said.
Similar results on major outcomes including false positives, unnecessary terminations, and DS pregnancies were observed for contingent tests and several other screening tests. But the contingent screening test was associated with one of the lowest rates of procedure-related miscarriages (10). The contingent test also allowed 78% of patients to be reassured in the first trimester.
The combined test was associated with the highest rate of DS pregnancies in the first trimester (90%), and the highest rates of procedure-related euploid miscarriages (71) and unnecessary terminations (24). The combined test was the most expensive of the tests that followed screening strategies, most likely due to the requirement of a nuchal fold transparency test, and the high rate of false positives and subsequent unnecessary terminations associated with it, Dr. Gekas and associates said.
The computer model showed that the integrated test had the lowest rate of procedure-related miscarriages. However, widespread use of the integrated test would prevent women from being reassured in the first trimester, they noted.
The study was limited by the lack of prospective data and the potential inability to generalize the results across countries, they said. However, “it is unlikely that a large-scale prospective clinical trial comparing these eight screening approaches could rapidly be organized across North America.”
From the American Journal Of Obstetrics & Gynecology