Anemia

Photo by Piotr Bodzek

The European Medicines Agency’s Committee for Medicinal Products for Human Use (CHMP) has recommended approval for lusutrombopag to treat severe thrombocytopenia in adults with chronic liver disease who are undergoing invasive procedures.

Lusutrombopag is a thrombopoietin (TPO) receptor agonist that acts on the transmembrane domain of TPO receptors to induce proliferation and differentiation of megakaryocyte progenitor cells, thus leading to thrombocytopoiesis.

Lusutrombopag is intended to reduce the need for platelet transfusions before an invasive procedure and for rescue therapy for bleeding in the 7 days after the procedure.

The CHMP’s recommendation for lusutrombopag will be reviewed by the European Commission, which has the authority to approve medicines for use in the European Union, Norway, Iceland, and Liechtenstein.

The European Commission usually makes a decision within 67 days of a CHMP recommendation.

Lusutrombopag trials

The efficacy of lusutrombopag was evaluated in two phase 3 trials—L-PLUS1 (1304M0631) and L-PLUS2 (1423M0634, NCT02389621).

The trials included 312 patients with chronic liver disease, severe thrombocytopenia (platelet counts below 50,000/μL), and a scheduled invasive procedure. The patients received lusutrombopag or placebo once daily for up to 7 days.

In L-PLUS1, 78% (38/49) of patients receiving lusutrombopag did not require platelet transfusions prior to the primary invasive procedure. The same was true for 13% (6/48) of patients who received placebo (P<0.0001).

In L-PLUS2 , 65% (70/108) of patients who received lusutrombopag did not require platelet transfusions prior to the primary invasive procedure or rescue therapy for bleeding in the 7 days after the procedure. The same was true for 29% (31/107) of patients receiving placebo (P<0.0001).

The safety of lusutrombopag was evaluated in three trials—L‐PLUS 1, L‐PLUS 2, and M0626 (1208M062).

The most common adverse event (AE) in these trials (n=341) was headache, which occurred in 5% of patients on lusutrombopag and 4% of patients on placebo.

Serious AEs occurred in 5% of patients on lusutrombopag and 7% of patients on placebo. The most common serious AE was portal vein thrombosis, which occurred in 1% of patients in both treatment groups.

None of the patients discontinued lusutrombopag due to AEs.

The trials were sponsored by Shionogi & Co., Ltd.

Photo by Piotr Bodzek

The European Medicines Agency’s Committee for Medicinal Products for Human Use (CHMP) has recommended approval for lusutrombopag to treat severe thrombocytopenia in adults with chronic liver disease who are undergoing invasive procedures.

Lusutrombopag is a thrombopoietin (TPO) receptor agonist that acts on the transmembrane domain of TPO receptors to induce proliferation and differentiation of megakaryocyte progenitor cells, thus leading to thrombocytopoiesis.

Lusutrombopag is intended to reduce the need for platelet transfusions before an invasive procedure and for rescue therapy for bleeding in the 7 days after the procedure.

The CHMP’s recommendation for lusutrombopag will be reviewed by the European Commission, which has the authority to approve medicines for use in the European Union, Norway, Iceland, and Liechtenstein.

The European Commission usually makes a decision within 67 days of a CHMP recommendation.

Lusutrombopag trials

The efficacy of lusutrombopag was evaluated in two phase 3 trials—L-PLUS1 (1304M0631) and L-PLUS2 (1423M0634, NCT02389621).

The trials included 312 patients with chronic liver disease, severe thrombocytopenia (platelet counts below 50,000/μL), and a scheduled invasive procedure. The patients received lusutrombopag or placebo once daily for up to 7 days.

In L-PLUS1, 78% (38/49) of patients receiving lusutrombopag did not require platelet transfusions prior to the primary invasive procedure. The same was true for 13% (6/48) of patients who received placebo (P<0.0001).

In L-PLUS2 , 65% (70/108) of patients who received lusutrombopag did not require platelet transfusions prior to the primary invasive procedure or rescue therapy for bleeding in the 7 days after the procedure. The same was true for 29% (31/107) of patients receiving placebo (P<0.0001).

The safety of lusutrombopag was evaluated in three trials—L‐PLUS 1, L‐PLUS 2, and M0626 (1208M062).

The most common adverse event (AE) in these trials (n=341) was headache, which occurred in 5% of patients on lusutrombopag and 4% of patients on placebo.

Serious AEs occurred in 5% of patients on lusutrombopag and 7% of patients on placebo. The most common serious AE was portal vein thrombosis, which occurred in 1% of patients in both treatment groups.

None of the patients discontinued lusutrombopag due to AEs.

The trials were sponsored by Shionogi & Co., Ltd.

Photo by Piotr Bodzek

The European Medicines Agency’s Committee for Medicinal Products for Human Use (CHMP) has recommended approval for lusutrombopag to treat severe thrombocytopenia in adults with chronic liver disease who are undergoing invasive procedures.

Lusutrombopag is a thrombopoietin (TPO) receptor agonist that acts on the transmembrane domain of TPO receptors to induce proliferation and differentiation of megakaryocyte progenitor cells, thus leading to thrombocytopoiesis.

Lusutrombopag is intended to reduce the need for platelet transfusions before an invasive procedure and for rescue therapy for bleeding in the 7 days after the procedure.

The CHMP’s recommendation for lusutrombopag will be reviewed by the European Commission, which has the authority to approve medicines for use in the European Union, Norway, Iceland, and Liechtenstein.

The European Commission usually makes a decision within 67 days of a CHMP recommendation.

Lusutrombopag trials

The efficacy of lusutrombopag was evaluated in two phase 3 trials—L-PLUS1 (1304M0631) and L-PLUS2 (1423M0634, NCT02389621).

The trials included 312 patients with chronic liver disease, severe thrombocytopenia (platelet counts below 50,000/μL), and a scheduled invasive procedure. The patients received lusutrombopag or placebo once daily for up to 7 days.

In L-PLUS1, 78% (38/49) of patients receiving lusutrombopag did not require platelet transfusions prior to the primary invasive procedure. The same was true for 13% (6/48) of patients who received placebo (P<0.0001).

In L-PLUS2 , 65% (70/108) of patients who received lusutrombopag did not require platelet transfusions prior to the primary invasive procedure or rescue therapy for bleeding in the 7 days after the procedure. The same was true for 29% (31/107) of patients receiving placebo (P<0.0001).

The safety of lusutrombopag was evaluated in three trials—L‐PLUS 1, L‐PLUS 2, and M0626 (1208M062).

The most common adverse event (AE) in these trials (n=341) was headache, which occurred in 5% of patients on lusutrombopag and 4% of patients on placebo.

Serious AEs occurred in 5% of patients on lusutrombopag and 7% of patients on placebo. The most common serious AE was portal vein thrombosis, which occurred in 1% of patients in both treatment groups.

None of the patients discontinued lusutrombopag due to AEs.

The trials were sponsored by Shionogi & Co., Ltd.

The Food and Drug Administration is asking for comments on its newly released draft guidance on how industry can reduce the risk of bacterial contamination in platelets destined for transfusion, especially those stored at room temperature.

The draft document, “Bacterial Risk Control Strategies for Blood Collection Establishments and Transfusion Services to Enhance the Safety and Availability of Platelets for Transfusion,” will be open for public comment through Feb. 4, 2019.

It is the first update to the policy document since 2016.

In the draft guidance, the FDA recommended three strategies for platelets stored for 5 days from collection. For apheresis platelets and prestorage pools, the FDA suggested an initial primary culture followed by a secondary culture on day 3 or day 4 or an initial primary culture followed by secondary testing with a rapid test. The third strategy – for apheresis platelets – is pathogen reduction alone.

The FDA also outlined three strategies for testing platelets stored for 7 days, all of which apply to apheresis platelets. The methods include an initial primary culture followed by a secondary culture no earlier than day 4, using a device labeled as a safety measure; an initial primary culture followed by a secondary rapid test, labeled as a safety measure; or large volume delayed sampling.

The supply of blood and blood components in the United States is among the safest in the world, FDA Commissioner Scott Gottlieb, MD, said in a statement. The FDA’s continuously updated protocols are intended to keep it that way.

“Blood and blood components are some of the most critical medical products American patients depend upon,” Dr. Gottlieb wrote. “But there remains risk, albeit uncommon, of contamination with infectious diseases, particularly with blood products that are stored at room temperature. While we’ve made great strides in reducing the risk of blood contamination through donor screening and laboratory testing, we continue to support innovations and blood product alternatives that can better keep pace with emerging pathogens and reduce some of the logistical challenges and costs associated with ensuring the safety of blood products.”

Since the 2016 guidance document was issued, new strategies for bacterial detection have become available that could potentially reduce the risk of contamination of platelets and permit extension of platelet dating up to 7 days, including bacterial testing strategies using culture-based devices, rapid bacterial detection devices, and the implementation of pathogen reduction technology.

The recommendations in the draft guidance incorporate ideas put forth during a July 2018 meeting of the agency’s Blood Products Advisory Committee. Committee members were asked to discuss the advantages and disadvantages of various strategies to control the risk of bacterial contamination in platelets, including the scientific evidence and the operational considerations involved. Their comments have been incorporated into the new draft guidance document.

In late November 2018, the FDA held a public workshop to encourage a scientific discussion on a range of pathogen reduction topics, including the development of novel technologies. “The ideal pathogen reduction technology would: be relatively inexpensive, be simple to implement on whole blood, allow treated blood to subsequently be separated into components or alternatively could be performed on apheresis products, inactivate a broad range of pathogens, and would have no adverse effect on product safety or product yield,” the FDA noted in a statement.

[email protected]

The Food and Drug Administration is asking for comments on its newly released draft guidance on how industry can reduce the risk of bacterial contamination in platelets destined for transfusion, especially those stored at room temperature.

The draft document, “Bacterial Risk Control Strategies for Blood Collection Establishments and Transfusion Services to Enhance the Safety and Availability of Platelets for Transfusion,” will be open for public comment through Feb. 4, 2019.

It is the first update to the policy document since 2016.

In the draft guidance, the FDA recommended three strategies for platelets stored for 5 days from collection. For apheresis platelets and prestorage pools, the FDA suggested an initial primary culture followed by a secondary culture on day 3 or day 4 or an initial primary culture followed by secondary testing with a rapid test. The third strategy – for apheresis platelets – is pathogen reduction alone.

The FDA also outlined three strategies for testing platelets stored for 7 days, all of which apply to apheresis platelets. The methods include an initial primary culture followed by a secondary culture no earlier than day 4, using a device labeled as a safety measure; an initial primary culture followed by a secondary rapid test, labeled as a safety measure; or large volume delayed sampling.

The supply of blood and blood components in the United States is among the safest in the world, FDA Commissioner Scott Gottlieb, MD, said in a statement. The FDA’s continuously updated protocols are intended to keep it that way.

“Blood and blood components are some of the most critical medical products American patients depend upon,” Dr. Gottlieb wrote. “But there remains risk, albeit uncommon, of contamination with infectious diseases, particularly with blood products that are stored at room temperature. While we’ve made great strides in reducing the risk of blood contamination through donor screening and laboratory testing, we continue to support innovations and blood product alternatives that can better keep pace with emerging pathogens and reduce some of the logistical challenges and costs associated with ensuring the safety of blood products.”

Since the 2016 guidance document was issued, new strategies for bacterial detection have become available that could potentially reduce the risk of contamination of platelets and permit extension of platelet dating up to 7 days, including bacterial testing strategies using culture-based devices, rapid bacterial detection devices, and the implementation of pathogen reduction technology.

The recommendations in the draft guidance incorporate ideas put forth during a July 2018 meeting of the agency’s Blood Products Advisory Committee. Committee members were asked to discuss the advantages and disadvantages of various strategies to control the risk of bacterial contamination in platelets, including the scientific evidence and the operational considerations involved. Their comments have been incorporated into the new draft guidance document.

In late November 2018, the FDA held a public workshop to encourage a scientific discussion on a range of pathogen reduction topics, including the development of novel technologies. “The ideal pathogen reduction technology would: be relatively inexpensive, be simple to implement on whole blood, allow treated blood to subsequently be separated into components or alternatively could be performed on apheresis products, inactivate a broad range of pathogens, and would have no adverse effect on product safety or product yield,” the FDA noted in a statement.

[email protected]

The Food and Drug Administration is asking for comments on its newly released draft guidance on how industry can reduce the risk of bacterial contamination in platelets destined for transfusion, especially those stored at room temperature.

The draft document, “Bacterial Risk Control Strategies for Blood Collection Establishments and Transfusion Services to Enhance the Safety and Availability of Platelets for Transfusion,” will be open for public comment through Feb. 4, 2019.

It is the first update to the policy document since 2016.

In the draft guidance, the FDA recommended three strategies for platelets stored for 5 days from collection. For apheresis platelets and prestorage pools, the FDA suggested an initial primary culture followed by a secondary culture on day 3 or day 4 or an initial primary culture followed by secondary testing with a rapid test. The third strategy – for apheresis platelets – is pathogen reduction alone.

The FDA also outlined three strategies for testing platelets stored for 7 days, all of which apply to apheresis platelets. The methods include an initial primary culture followed by a secondary culture no earlier than day 4, using a device labeled as a safety measure; an initial primary culture followed by a secondary rapid test, labeled as a safety measure; or large volume delayed sampling.

The supply of blood and blood components in the United States is among the safest in the world, FDA Commissioner Scott Gottlieb, MD, said in a statement. The FDA’s continuously updated protocols are intended to keep it that way.

“Blood and blood components are some of the most critical medical products American patients depend upon,” Dr. Gottlieb wrote. “But there remains risk, albeit uncommon, of contamination with infectious diseases, particularly with blood products that are stored at room temperature. While we’ve made great strides in reducing the risk of blood contamination through donor screening and laboratory testing, we continue to support innovations and blood product alternatives that can better keep pace with emerging pathogens and reduce some of the logistical challenges and costs associated with ensuring the safety of blood products.”

Since the 2016 guidance document was issued, new strategies for bacterial detection have become available that could potentially reduce the risk of contamination of platelets and permit extension of platelet dating up to 7 days, including bacterial testing strategies using culture-based devices, rapid bacterial detection devices, and the implementation of pathogen reduction technology.

The recommendations in the draft guidance incorporate ideas put forth during a July 2018 meeting of the agency’s Blood Products Advisory Committee. Committee members were asked to discuss the advantages and disadvantages of various strategies to control the risk of bacterial contamination in platelets, including the scientific evidence and the operational considerations involved. Their comments have been incorporated into the new draft guidance document.

In late November 2018, the FDA held a public workshop to encourage a scientific discussion on a range of pathogen reduction topics, including the development of novel technologies. “The ideal pathogen reduction technology would: be relatively inexpensive, be simple to implement on whole blood, allow treated blood to subsequently be separated into components or alternatively could be performed on apheresis products, inactivate a broad range of pathogens, and would have no adverse effect on product safety or product yield,” the FDA noted in a statement.

[email protected]

Photo from UAB Hospital

SAN DIEGO—Luspatercept can produce “clinically meaningful” results in transfusion-dependent adults with β-thalassemia, according to a speaker at the 2018 ASH Annual Meeting.

In the phase 3 BELIEVE trial, β-thalassemia patients were significantly more likely to experience a reduction in transfusion burden if they were treated with luspatercept rather than placebo.

“Luspatercept showed a statistically significant and clinically meaningful . . . reduction in transfusion burden compared with placebo at any 12- or 24-week [period] along this study,” said Maria Domenica Cappellini, MD, of the University of Milan in Italy.

“At this point, we believe [luspatercept] is a potential new treatment for adult patients with β-thalassemia who are requiring regular blood transfusions.”

Dr. Cappellini presented these results at ASH as abstract 163.

The BELIEVE trial (NCT02604433) enrolled 336 patients from 65 sites in 15 countries. All patients had β-thalassemia or hemoglobin E/β‑thalassemia. They required regular transfusions of six to 20 red blood cell (RBC) units in the 24 weeks prior to randomization, and none had a transfusion-free period lasting 35 days or more.

The patients were randomized 2:1 to receive luspatercept—at a starting dose of 1.0 mg/kg with titration up to 1.25 mg/kg—(n=224) or placebo (n=112) subcutaneously every 3 weeks for at least 48 weeks.

All patients continued to receive RBC transfusions and iron chelation therapy as necessary (so they maintained the same baseline hemoglobin level).

The median age was 30 in both treatment arms (range, 18-66). More than half of patients were female—58.9% in the luspatercept arm and 56.3% in the placebo arm.

A similar percentage of patients in both arms had the β0, β0 genotype—30.4% in the luspatercept arm and 31.3% in the placebo arm.

The median hemoglobin level at baseline was 9.31 g/dL in the luspatercept arm and 9.15 g/dL in the placebo arm. The median RBC transfusion burden was 6.12 units/12 weeks and 6.27 units/12 weeks, respectively.

Other baseline characteristics were similar as well.

Efficacy

“[L]uspatercept showed a statistically significant improvement in the primary endpoint,” Dr. Cappellini noted.

The primary endpoint was at least a 33% reduction in transfusion burden—of at least two RBC units—from week 13 to week 24, as compared to the 12-week baseline period.

This endpoint was achieved by 21.4% (n=48) of patients in the luspatercept arm and 4.5% (n=5) in the placebo arm (odds ratio=5.79; P<0.0001).

“Statistical significance was also demonstrated with luspatercept versus placebo for all the key secondary endpoints,” Dr. Cappellini said.

There were more patients in the luspatercept arm than the placebo arm who achieved at least a 33% reduction in transfusion burden from week 37 to 48—19.6% and 3.6%, respectively (P<0.0001).

Similarly, there were more patients in the luspatercept arm than the placebo arm who achieved at least a 50% reduction in transfusion burden from week 13 to 24—7.6% and 1.8%, respectively (P=0.0303)—and from week 37 to 48—10.3% and 0.9%, respectively (P=0.0017).

During any 12-week interval, 70.5% of luspatercept-treated patients and 29.5% of placebo-treated patients achieved at least a 33% reduction in transfusion burden (P<0.0001), and 40.2% and 6.3%, respectively (P<0.0001), achieved at least a 50% reduction in transfusion burden.

During any 24-week interval, 41.1% of luspatercept-treated patients and 2.7% of placebo-treated patients achieved at least a 33% reduction in transfusion burden (P<0.0001), and 16.5% and 0.9%, respectively (P<0.0001), achieved at least a 50% reduction in transfusion burden.

Safety

Ninety-six percent of patients in the luspatercept arm and 92.7% in the placebo arm had at least one treatment-emergent adverse event (TEAE).

Grade 3 or higher TEAEs occurred in 29.1% of patients in the luspatercept arm and 15.6% of those in the placebo arm. Serious TEAEs occurred in 15.2% and 5.5%, respectively.

One patient in the placebo arm had a TEAE-related death (acute cholecystitis), but there were no treatment-related deaths in the luspatercept arm.

TEAEs leading to treatment discontinuation occurred in 5.4% of luspatercept-treated patients and 0.9% of placebo-treated patients.

TEAEs that occurred more frequently in the luspatercept arm than in the placebo arm (respectively) included bone pain (19.7% and 8.3%), arthralgia (19.3% and 11.9%), and dizziness (11.2% and 4.6%).

Grade 3/4 TEAEs (in the luspatercept and placebo arms, respectively) included anemia (3.1% and 0%), increased liver iron concentration (2.7% and 0.9%), hyperuricemia (2.7% and 0%), hypertension (1.8% and 0%), syncope (1.8% and 0%), back pain (1.3% and 0.9%), bone pain (1.3% and 0%), blood uric acid increase (1.3% and 0%), increased aspartate aminotransferase (1.3% and 0%), increased alanine aminotransferase (0.9% and 2.8%), and thromboembolic events (0.9% and 0%).

Dr. Cappellini noted that thromboembolic events occurred in eight luspatercept-treated patients and one placebo-treated patient. In all cases, the patients had multiple risk factors for thrombosis.

This study was sponsored by Celgene Corporation and Acceleron Pharma. Dr. Cappellini reported relationships with Novartis, Celgene, Sanofi-Genzyme, and Vifor.

Photo from UAB Hospital

SAN DIEGO—Luspatercept can produce “clinically meaningful” results in transfusion-dependent adults with β-thalassemia, according to a speaker at the 2018 ASH Annual Meeting.

In the phase 3 BELIEVE trial, β-thalassemia patients were significantly more likely to experience a reduction in transfusion burden if they were treated with luspatercept rather than placebo.

“Luspatercept showed a statistically significant and clinically meaningful . . . reduction in transfusion burden compared with placebo at any 12- or 24-week [period] along this study,” said Maria Domenica Cappellini, MD, of the University of Milan in Italy.

“At this point, we believe [luspatercept] is a potential new treatment for adult patients with β-thalassemia who are requiring regular blood transfusions.”

Dr. Cappellini presented these results at ASH as abstract 163.

The BELIEVE trial (NCT02604433) enrolled 336 patients from 65 sites in 15 countries. All patients had β-thalassemia or hemoglobin E/β‑thalassemia. They required regular transfusions of six to 20 red blood cell (RBC) units in the 24 weeks prior to randomization, and none had a transfusion-free period lasting 35 days or more.

The patients were randomized 2:1 to receive luspatercept—at a starting dose of 1.0 mg/kg with titration up to 1.25 mg/kg—(n=224) or placebo (n=112) subcutaneously every 3 weeks for at least 48 weeks.

All patients continued to receive RBC transfusions and iron chelation therapy as necessary (so they maintained the same baseline hemoglobin level).

The median age was 30 in both treatment arms (range, 18-66). More than half of patients were female—58.9% in the luspatercept arm and 56.3% in the placebo arm.

A similar percentage of patients in both arms had the β0, β0 genotype—30.4% in the luspatercept arm and 31.3% in the placebo arm.

The median hemoglobin level at baseline was 9.31 g/dL in the luspatercept arm and 9.15 g/dL in the placebo arm. The median RBC transfusion burden was 6.12 units/12 weeks and 6.27 units/12 weeks, respectively.

Other baseline characteristics were similar as well.

Efficacy

“[L]uspatercept showed a statistically significant improvement in the primary endpoint,” Dr. Cappellini noted.

The primary endpoint was at least a 33% reduction in transfusion burden—of at least two RBC units—from week 13 to week 24, as compared to the 12-week baseline period.

This endpoint was achieved by 21.4% (n=48) of patients in the luspatercept arm and 4.5% (n=5) in the placebo arm (odds ratio=5.79; P<0.0001).

“Statistical significance was also demonstrated with luspatercept versus placebo for all the key secondary endpoints,” Dr. Cappellini said.

There were more patients in the luspatercept arm than the placebo arm who achieved at least a 33% reduction in transfusion burden from week 37 to 48—19.6% and 3.6%, respectively (P<0.0001).

Similarly, there were more patients in the luspatercept arm than the placebo arm who achieved at least a 50% reduction in transfusion burden from week 13 to 24—7.6% and 1.8%, respectively (P=0.0303)—and from week 37 to 48—10.3% and 0.9%, respectively (P=0.0017).

During any 12-week interval, 70.5% of luspatercept-treated patients and 29.5% of placebo-treated patients achieved at least a 33% reduction in transfusion burden (P<0.0001), and 40.2% and 6.3%, respectively (P<0.0001), achieved at least a 50% reduction in transfusion burden.

During any 24-week interval, 41.1% of luspatercept-treated patients and 2.7% of placebo-treated patients achieved at least a 33% reduction in transfusion burden (P<0.0001), and 16.5% and 0.9%, respectively (P<0.0001), achieved at least a 50% reduction in transfusion burden.

Safety

Ninety-six percent of patients in the luspatercept arm and 92.7% in the placebo arm had at least one treatment-emergent adverse event (TEAE).

Grade 3 or higher TEAEs occurred in 29.1% of patients in the luspatercept arm and 15.6% of those in the placebo arm. Serious TEAEs occurred in 15.2% and 5.5%, respectively.

One patient in the placebo arm had a TEAE-related death (acute cholecystitis), but there were no treatment-related deaths in the luspatercept arm.

TEAEs leading to treatment discontinuation occurred in 5.4% of luspatercept-treated patients and 0.9% of placebo-treated patients.

TEAEs that occurred more frequently in the luspatercept arm than in the placebo arm (respectively) included bone pain (19.7% and 8.3%), arthralgia (19.3% and 11.9%), and dizziness (11.2% and 4.6%).

Grade 3/4 TEAEs (in the luspatercept and placebo arms, respectively) included anemia (3.1% and 0%), increased liver iron concentration (2.7% and 0.9%), hyperuricemia (2.7% and 0%), hypertension (1.8% and 0%), syncope (1.8% and 0%), back pain (1.3% and 0.9%), bone pain (1.3% and 0%), blood uric acid increase (1.3% and 0%), increased aspartate aminotransferase (1.3% and 0%), increased alanine aminotransferase (0.9% and 2.8%), and thromboembolic events (0.9% and 0%).

Dr. Cappellini noted that thromboembolic events occurred in eight luspatercept-treated patients and one placebo-treated patient. In all cases, the patients had multiple risk factors for thrombosis.

This study was sponsored by Celgene Corporation and Acceleron Pharma. Dr. Cappellini reported relationships with Novartis, Celgene, Sanofi-Genzyme, and Vifor.

Photo from UAB Hospital

SAN DIEGO—Luspatercept can produce “clinically meaningful” results in transfusion-dependent adults with β-thalassemia, according to a speaker at the 2018 ASH Annual Meeting.

In the phase 3 BELIEVE trial, β-thalassemia patients were significantly more likely to experience a reduction in transfusion burden if they were treated with luspatercept rather than placebo.

“Luspatercept showed a statistically significant and clinically meaningful . . . reduction in transfusion burden compared with placebo at any 12- or 24-week [period] along this study,” said Maria Domenica Cappellini, MD, of the University of Milan in Italy.

“At this point, we believe [luspatercept] is a potential new treatment for adult patients with β-thalassemia who are requiring regular blood transfusions.”

Dr. Cappellini presented these results at ASH as abstract 163.

The BELIEVE trial (NCT02604433) enrolled 336 patients from 65 sites in 15 countries. All patients had β-thalassemia or hemoglobin E/β‑thalassemia. They required regular transfusions of six to 20 red blood cell (RBC) units in the 24 weeks prior to randomization, and none had a transfusion-free period lasting 35 days or more.

The patients were randomized 2:1 to receive luspatercept—at a starting dose of 1.0 mg/kg with titration up to 1.25 mg/kg—(n=224) or placebo (n=112) subcutaneously every 3 weeks for at least 48 weeks.

All patients continued to receive RBC transfusions and iron chelation therapy as necessary (so they maintained the same baseline hemoglobin level).

The median age was 30 in both treatment arms (range, 18-66). More than half of patients were female—58.9% in the luspatercept arm and 56.3% in the placebo arm.

A similar percentage of patients in both arms had the β0, β0 genotype—30.4% in the luspatercept arm and 31.3% in the placebo arm.

The median hemoglobin level at baseline was 9.31 g/dL in the luspatercept arm and 9.15 g/dL in the placebo arm. The median RBC transfusion burden was 6.12 units/12 weeks and 6.27 units/12 weeks, respectively.

Other baseline characteristics were similar as well.

Efficacy

“[L]uspatercept showed a statistically significant improvement in the primary endpoint,” Dr. Cappellini noted.

The primary endpoint was at least a 33% reduction in transfusion burden—of at least two RBC units—from week 13 to week 24, as compared to the 12-week baseline period.

This endpoint was achieved by 21.4% (n=48) of patients in the luspatercept arm and 4.5% (n=5) in the placebo arm (odds ratio=5.79; P<0.0001).

“Statistical significance was also demonstrated with luspatercept versus placebo for all the key secondary endpoints,” Dr. Cappellini said.

There were more patients in the luspatercept arm than the placebo arm who achieved at least a 33% reduction in transfusion burden from week 37 to 48—19.6% and 3.6%, respectively (P<0.0001).

Similarly, there were more patients in the luspatercept arm than the placebo arm who achieved at least a 50% reduction in transfusion burden from week 13 to 24—7.6% and 1.8%, respectively (P=0.0303)—and from week 37 to 48—10.3% and 0.9%, respectively (P=0.0017).

During any 12-week interval, 70.5% of luspatercept-treated patients and 29.5% of placebo-treated patients achieved at least a 33% reduction in transfusion burden (P<0.0001), and 40.2% and 6.3%, respectively (P<0.0001), achieved at least a 50% reduction in transfusion burden.

During any 24-week interval, 41.1% of luspatercept-treated patients and 2.7% of placebo-treated patients achieved at least a 33% reduction in transfusion burden (P<0.0001), and 16.5% and 0.9%, respectively (P<0.0001), achieved at least a 50% reduction in transfusion burden.

Safety

Ninety-six percent of patients in the luspatercept arm and 92.7% in the placebo arm had at least one treatment-emergent adverse event (TEAE).

Grade 3 or higher TEAEs occurred in 29.1% of patients in the luspatercept arm and 15.6% of those in the placebo arm. Serious TEAEs occurred in 15.2% and 5.5%, respectively.

One patient in the placebo arm had a TEAE-related death (acute cholecystitis), but there were no treatment-related deaths in the luspatercept arm.

TEAEs leading to treatment discontinuation occurred in 5.4% of luspatercept-treated patients and 0.9% of placebo-treated patients.

TEAEs that occurred more frequently in the luspatercept arm than in the placebo arm (respectively) included bone pain (19.7% and 8.3%), arthralgia (19.3% and 11.9%), and dizziness (11.2% and 4.6%).

Grade 3/4 TEAEs (in the luspatercept and placebo arms, respectively) included anemia (3.1% and 0%), increased liver iron concentration (2.7% and 0.9%), hyperuricemia (2.7% and 0%), hypertension (1.8% and 0%), syncope (1.8% and 0%), back pain (1.3% and 0.9%), bone pain (1.3% and 0%), blood uric acid increase (1.3% and 0%), increased aspartate aminotransferase (1.3% and 0%), increased alanine aminotransferase (0.9% and 2.8%), and thromboembolic events (0.9% and 0%).

Dr. Cappellini noted that thromboembolic events occurred in eight luspatercept-treated patients and one placebo-treated patient. In all cases, the patients had multiple risk factors for thrombosis.

This study was sponsored by Celgene Corporation and Acceleron Pharma. Dr. Cappellini reported relationships with Novartis, Celgene, Sanofi-Genzyme, and Vifor.

A blood management initiative that reduced RBC transfusions in the hospital did not adversely impact long-term outcomes after discharge, a retrospective analysis of an extensive patient database suggested.

Vlad/Fotolia

Tolerating moderate in-hospital anemia did not increase subsequent RBC use, readmission, or mortality over the next 6 months, according to results of the study, which drew on nearly half a million patient records.

In fact, modest mortality decreases were seen over time for patients with moderate anemia, perhaps because of concomitant initiatives that targeted infectious and circulatory conditions, reported Nareg H. Roubinian, MD, of Kaiser Permanente Northern California in Oakland and the University of California, San Francisco, and coinvestigators.

“These data support the efficacy and safety of practice recommendations to limit red blood cell transfusion in patients with anemia during and after hospitalization,” Dr. Roubinian and colleagues wrote in their report, which appears in the Annals of Internal Medicine.

However, additional studies are needed to guide anemia management, they wrote, particularly since persistent anemia has impacts on quality of life that are “likely substantial” and linked to the severity of that anemia.

Dr. Roubinian and colleagues sought to evaluate the impact of blood management programs – initiated starting in 2010 – that included blood-sparing surgical and medical techniques, increased use of hemostatic and cell salvage agents, and treatment of suboptimal iron stores before surgery.

In previous retrospective cohort studies, the researchers had found that the blood conservation strategies did not impact in-hospital or 30-day mortality rates, which was consistent with short-term safety data from clinical trials and other observational studies.

Their latest report on longer-term outcomes was based on data from Kaiser Permanente Northern California for 445,371 adults who had 801,261 hospitalizations with discharges between 2010 and 2014. In this cohort, moderate anemia (hemoglobin between 7 g/dL and 10 g/dL) at discharge occurred in 119,489 patients (27%) and 187,440 hospitalizations overall (23%).

Over the 2010-2014 period, RBC transfusions decreased by more than 25% in the inpatient and outpatient settings; and in parallel, the prevalence of moderate anemia at hospital discharge increased from 20% to 25%.

However, the risks of subsequent RBC transfusions and rehospitalization after discharge with anemia decreased during the study period, and mortality rates stayed steady or decreased slightly.

Among patients with moderate anemia, the proportion with subsequent RBC transfusions within 6 months decreased from 18.9% in 2010 to 16.8% in 2014 (P less than .001), while the rate of rehospitalization within 6 months decreased from 36.5% to 32.8% over that same time period (P less than .001).

The adjusted 6-month mortality rate likewise decreased from 16.1% to 15.6% (P = .004) over that time period among patients with moderate anemia.

The study was supported by a grant from the National Heart, Lung, and Blood Institute. Dr. Roubinian and several coauthors reported grants during the conduct of the study from the National Institutes of Health.

SOURCE: Roubinian NH et al. Ann Intern Med. 2018 Dec 18. doi: 10.7326/M17-3253.

A blood management initiative that reduced RBC transfusions in the hospital did not adversely impact long-term outcomes after discharge, a retrospective analysis of an extensive patient database suggested.

Vlad/Fotolia

Tolerating moderate in-hospital anemia did not increase subsequent RBC use, readmission, or mortality over the next 6 months, according to results of the study, which drew on nearly half a million patient records.

In fact, modest mortality decreases were seen over time for patients with moderate anemia, perhaps because of concomitant initiatives that targeted infectious and circulatory conditions, reported Nareg H. Roubinian, MD, of Kaiser Permanente Northern California in Oakland and the University of California, San Francisco, and coinvestigators.

“These data support the efficacy and safety of practice recommendations to limit red blood cell transfusion in patients with anemia during and after hospitalization,” Dr. Roubinian and colleagues wrote in their report, which appears in the Annals of Internal Medicine.

However, additional studies are needed to guide anemia management, they wrote, particularly since persistent anemia has impacts on quality of life that are “likely substantial” and linked to the severity of that anemia.

Dr. Roubinian and colleagues sought to evaluate the impact of blood management programs – initiated starting in 2010 – that included blood-sparing surgical and medical techniques, increased use of hemostatic and cell salvage agents, and treatment of suboptimal iron stores before surgery.

In previous retrospective cohort studies, the researchers had found that the blood conservation strategies did not impact in-hospital or 30-day mortality rates, which was consistent with short-term safety data from clinical trials and other observational studies.

Their latest report on longer-term outcomes was based on data from Kaiser Permanente Northern California for 445,371 adults who had 801,261 hospitalizations with discharges between 2010 and 2014. In this cohort, moderate anemia (hemoglobin between 7 g/dL and 10 g/dL) at discharge occurred in 119,489 patients (27%) and 187,440 hospitalizations overall (23%).

Over the 2010-2014 period, RBC transfusions decreased by more than 25% in the inpatient and outpatient settings; and in parallel, the prevalence of moderate anemia at hospital discharge increased from 20% to 25%.

However, the risks of subsequent RBC transfusions and rehospitalization after discharge with anemia decreased during the study period, and mortality rates stayed steady or decreased slightly.

Among patients with moderate anemia, the proportion with subsequent RBC transfusions within 6 months decreased from 18.9% in 2010 to 16.8% in 2014 (P less than .001), while the rate of rehospitalization within 6 months decreased from 36.5% to 32.8% over that same time period (P less than .001).

The adjusted 6-month mortality rate likewise decreased from 16.1% to 15.6% (P = .004) over that time period among patients with moderate anemia.

The study was supported by a grant from the National Heart, Lung, and Blood Institute. Dr. Roubinian and several coauthors reported grants during the conduct of the study from the National Institutes of Health.

SOURCE: Roubinian NH et al. Ann Intern Med. 2018 Dec 18. doi: 10.7326/M17-3253.

A blood management initiative that reduced RBC transfusions in the hospital did not adversely impact long-term outcomes after discharge, a retrospective analysis of an extensive patient database suggested.

Vlad/Fotolia

Tolerating moderate in-hospital anemia did not increase subsequent RBC use, readmission, or mortality over the next 6 months, according to results of the study, which drew on nearly half a million patient records.

In fact, modest mortality decreases were seen over time for patients with moderate anemia, perhaps because of concomitant initiatives that targeted infectious and circulatory conditions, reported Nareg H. Roubinian, MD, of Kaiser Permanente Northern California in Oakland and the University of California, San Francisco, and coinvestigators.

“These data support the efficacy and safety of practice recommendations to limit red blood cell transfusion in patients with anemia during and after hospitalization,” Dr. Roubinian and colleagues wrote in their report, which appears in the Annals of Internal Medicine.

However, additional studies are needed to guide anemia management, they wrote, particularly since persistent anemia has impacts on quality of life that are “likely substantial” and linked to the severity of that anemia.

Dr. Roubinian and colleagues sought to evaluate the impact of blood management programs – initiated starting in 2010 – that included blood-sparing surgical and medical techniques, increased use of hemostatic and cell salvage agents, and treatment of suboptimal iron stores before surgery.

In previous retrospective cohort studies, the researchers had found that the blood conservation strategies did not impact in-hospital or 30-day mortality rates, which was consistent with short-term safety data from clinical trials and other observational studies.

Their latest report on longer-term outcomes was based on data from Kaiser Permanente Northern California for 445,371 adults who had 801,261 hospitalizations with discharges between 2010 and 2014. In this cohort, moderate anemia (hemoglobin between 7 g/dL and 10 g/dL) at discharge occurred in 119,489 patients (27%) and 187,440 hospitalizations overall (23%).

Over the 2010-2014 period, RBC transfusions decreased by more than 25% in the inpatient and outpatient settings; and in parallel, the prevalence of moderate anemia at hospital discharge increased from 20% to 25%.

However, the risks of subsequent RBC transfusions and rehospitalization after discharge with anemia decreased during the study period, and mortality rates stayed steady or decreased slightly.

Among patients with moderate anemia, the proportion with subsequent RBC transfusions within 6 months decreased from 18.9% in 2010 to 16.8% in 2014 (P less than .001), while the rate of rehospitalization within 6 months decreased from 36.5% to 32.8% over that same time period (P less than .001).

The adjusted 6-month mortality rate likewise decreased from 16.1% to 15.6% (P = .004) over that time period among patients with moderate anemia.

The study was supported by a grant from the National Heart, Lung, and Blood Institute. Dr. Roubinian and several coauthors reported grants during the conduct of the study from the National Institutes of Health.

SOURCE: Roubinian NH et al. Ann Intern Med. 2018 Dec 18. doi: 10.7326/M17-3253.

Photo by Bill Branson

The thrombopoietin receptor agonist romiplostim (NPlate®) is now approved by the U.S. Food and Drug Administration (FDA) to treat pediatric patients 1 year and older who have had immune thrombocytopenia (ITP) for at least 6 months and have not responded sufficiently to corticosteroids, immunoglobulins, or splenectomy.

Romiplostim was originally FDA-approved in 2008 to treat adult patients with chronic ITP who had an insufficient response to the same treatments.

Romiplostim is manufactured by Amgen, Inc.

The FDA based its approval on two double-blind, placebo-controlled clinical trials.

NCT01444417

The phase 3 study (NCT01444417) enrolled 62 pediatric patients 1 year and older who had ITP for at least 6 months. They were refractory to or relapsed after at least one prior therapy.

Investigators randomized them 2:1 to receive romiplostim (n=42) or placebo (n=20).

The starting dose was 1 μg/kg weekly for all ages. The dose was titrated up over a 24-week period to a maximum of 10 μg/kg weekly.

Patients were a median age of 9.5 years (range, 3–17), and 57% were female. A little over half (58%) had baseline platelet counts of 20 x 10⁹/L or less, which was similar in both treatment arms.

Eighty-one percent of romiplostim-treated patients had at least two prior ITP therapies, compared with 70% in the placebo group. One patient in each group had undergone splenectomy.

Twenty-two (52%) of the romiplostim-treated patients had durable platelet responses of 50 x 10⁹/L or greater for at least six weekly assessments during weeks 18 through 25 of treatment. Two (10%) patients in the placebo arm achieved durable platelet responses.

Thirty (71%) romiplostim-treated patients achieved an overall platelet response, defined as a durable or transient platelet response. This compared with four (20%) patients in the placebo group.

Romiplostim-treated patients had platelet counts of at least 50 x 10⁹/L for a median of 12 weeks, compared to 1 week for patients in the placebo arm.

All response endpoints were significant at P<0.05.

NCT00515203

The phase 1/2 study (NCT00515203) enrolled 22 patients who had ITP for at least 6 months prior to study enrollment and were relapsed from or refractory to prior treatment.

Investigators randomized the patients 3:1 to romiplostim (n=17) or placebo (n=5).

Patients were a median age of 10 years (range, 1–17), and 27.3% were female.

Approximately 82% of patients had baseline platelet counts of 20 x 10⁹/L or less, which was similar between the treatment arms.

Eighty-eight percent of patients in the romiplostim arm had at least two prior ITP therapies, as did 100% in the placebo group.

Six patients in the romiplostim group and two in the placebo group had undergone splenectomy.

Of the 17 patients treated with romiplostim, 15 (88.2%) achieved a platelet count of 50 x 10⁹/L or great for 2 consecutive weeks.

The same 15 patients also achieved an increase in platelet count of 20 x 10⁹/L or greater above baseline for 2 consecutive weeks during the treatment period.

None of the placebo-treated patients achieved either endpoint.

The adverse events profile in pediatric patients was compiled from the two trials and reflects a median drug exposure of 168 days for 59 patients.

The most common adverse events, occurring in 25% or more of romiplostim-treated patients, were contusion (41%), upper respiratory tract infection (31%), and oropharyngeal pain (25%). These occurred with an incidence at least 5% higher than in the placebo group.

Dosing

The recommended starting dose for pediatric patients is 1 µg/kg based on actual body weight and administered as a weekly subcutaneous injection.

The dose should be adjusted in increments of 1 µg/kg until the patient achieves a platelet count of 50 x 10⁹/L or greater.

The prescribing information recommends reassessing patients’ body weight every 12 weeks. 

Photo by Bill Branson

The thrombopoietin receptor agonist romiplostim (NPlate®) is now approved by the U.S. Food and Drug Administration (FDA) to treat pediatric patients 1 year and older who have had immune thrombocytopenia (ITP) for at least 6 months and have not responded sufficiently to corticosteroids, immunoglobulins, or splenectomy.

Romiplostim was originally FDA-approved in 2008 to treat adult patients with chronic ITP who had an insufficient response to the same treatments.

Romiplostim is manufactured by Amgen, Inc.

The FDA based its approval on two double-blind, placebo-controlled clinical trials.

NCT01444417

The phase 3 study (NCT01444417) enrolled 62 pediatric patients 1 year and older who had ITP for at least 6 months. They were refractory to or relapsed after at least one prior therapy.

Investigators randomized them 2:1 to receive romiplostim (n=42) or placebo (n=20).

The starting dose was 1 μg/kg weekly for all ages. The dose was titrated up over a 24-week period to a maximum of 10 μg/kg weekly.

Patients were a median age of 9.5 years (range, 3–17), and 57% were female. A little over half (58%) had baseline platelet counts of 20 x 10⁹/L or less, which was similar in both treatment arms.

Eighty-one percent of romiplostim-treated patients had at least two prior ITP therapies, compared with 70% in the placebo group. One patient in each group had undergone splenectomy.

Twenty-two (52%) of the romiplostim-treated patients had durable platelet responses of 50 x 10⁹/L or greater for at least six weekly assessments during weeks 18 through 25 of treatment. Two (10%) patients in the placebo arm achieved durable platelet responses.

Thirty (71%) romiplostim-treated patients achieved an overall platelet response, defined as a durable or transient platelet response. This compared with four (20%) patients in the placebo group.

Romiplostim-treated patients had platelet counts of at least 50 x 10⁹/L for a median of 12 weeks, compared to 1 week for patients in the placebo arm.

All response endpoints were significant at P<0.05.

NCT00515203

The phase 1/2 study (NCT00515203) enrolled 22 patients who had ITP for at least 6 months prior to study enrollment and were relapsed from or refractory to prior treatment.

Investigators randomized the patients 3:1 to romiplostim (n=17) or placebo (n=5).

Patients were a median age of 10 years (range, 1–17), and 27.3% were female.

Approximately 82% of patients had baseline platelet counts of 20 x 10⁹/L or less, which was similar between the treatment arms.

Eighty-eight percent of patients in the romiplostim arm had at least two prior ITP therapies, as did 100% in the placebo group.

Six patients in the romiplostim group and two in the placebo group had undergone splenectomy.

Of the 17 patients treated with romiplostim, 15 (88.2%) achieved a platelet count of 50 x 10⁹/L or great for 2 consecutive weeks.

The same 15 patients also achieved an increase in platelet count of 20 x 10⁹/L or greater above baseline for 2 consecutive weeks during the treatment period.

None of the placebo-treated patients achieved either endpoint.

The adverse events profile in pediatric patients was compiled from the two trials and reflects a median drug exposure of 168 days for 59 patients.

The most common adverse events, occurring in 25% or more of romiplostim-treated patients, were contusion (41%), upper respiratory tract infection (31%), and oropharyngeal pain (25%). These occurred with an incidence at least 5% higher than in the placebo group.

Dosing

The recommended starting dose for pediatric patients is 1 µg/kg based on actual body weight and administered as a weekly subcutaneous injection.

The dose should be adjusted in increments of 1 µg/kg until the patient achieves a platelet count of 50 x 10⁹/L or greater.

The prescribing information recommends reassessing patients’ body weight every 12 weeks. 

Photo by Bill Branson

The thrombopoietin receptor agonist romiplostim (NPlate®) is now approved by the U.S. Food and Drug Administration (FDA) to treat pediatric patients 1 year and older who have had immune thrombocytopenia (ITP) for at least 6 months and have not responded sufficiently to corticosteroids, immunoglobulins, or splenectomy.

Romiplostim was originally FDA-approved in 2008 to treat adult patients with chronic ITP who had an insufficient response to the same treatments.

Romiplostim is manufactured by Amgen, Inc.

The FDA based its approval on two double-blind, placebo-controlled clinical trials.

NCT01444417

The phase 3 study (NCT01444417) enrolled 62 pediatric patients 1 year and older who had ITP for at least 6 months. They were refractory to or relapsed after at least one prior therapy.

Investigators randomized them 2:1 to receive romiplostim (n=42) or placebo (n=20).

The starting dose was 1 μg/kg weekly for all ages. The dose was titrated up over a 24-week period to a maximum of 10 μg/kg weekly.

Patients were a median age of 9.5 years (range, 3–17), and 57% were female. A little over half (58%) had baseline platelet counts of 20 x 10⁹/L or less, which was similar in both treatment arms.

Eighty-one percent of romiplostim-treated patients had at least two prior ITP therapies, compared with 70% in the placebo group. One patient in each group had undergone splenectomy.

Twenty-two (52%) of the romiplostim-treated patients had durable platelet responses of 50 x 10⁹/L or greater for at least six weekly assessments during weeks 18 through 25 of treatment. Two (10%) patients in the placebo arm achieved durable platelet responses.

Thirty (71%) romiplostim-treated patients achieved an overall platelet response, defined as a durable or transient platelet response. This compared with four (20%) patients in the placebo group.

Romiplostim-treated patients had platelet counts of at least 50 x 10⁹/L for a median of 12 weeks, compared to 1 week for patients in the placebo arm.

All response endpoints were significant at P<0.05.

NCT00515203

The phase 1/2 study (NCT00515203) enrolled 22 patients who had ITP for at least 6 months prior to study enrollment and were relapsed from or refractory to prior treatment.

Investigators randomized the patients 3:1 to romiplostim (n=17) or placebo (n=5).

Patients were a median age of 10 years (range, 1–17), and 27.3% were female.

Approximately 82% of patients had baseline platelet counts of 20 x 10⁹/L or less, which was similar between the treatment arms.

Eighty-eight percent of patients in the romiplostim arm had at least two prior ITP therapies, as did 100% in the placebo group.

Six patients in the romiplostim group and two in the placebo group had undergone splenectomy.

Of the 17 patients treated with romiplostim, 15 (88.2%) achieved a platelet count of 50 x 10⁹/L or great for 2 consecutive weeks.

The same 15 patients also achieved an increase in platelet count of 20 x 10⁹/L or greater above baseline for 2 consecutive weeks during the treatment period.

None of the placebo-treated patients achieved either endpoint.

The adverse events profile in pediatric patients was compiled from the two trials and reflects a median drug exposure of 168 days for 59 patients.

The most common adverse events, occurring in 25% or more of romiplostim-treated patients, were contusion (41%), upper respiratory tract infection (31%), and oropharyngeal pain (25%). These occurred with an incidence at least 5% higher than in the placebo group.

Dosing

The recommended starting dose for pediatric patients is 1 µg/kg based on actual body weight and administered as a weekly subcutaneous injection.

The dose should be adjusted in increments of 1 µg/kg until the patient achieves a platelet count of 50 x 10⁹/L or greater.

The prescribing information recommends reassessing patients’ body weight every 12 weeks. 

Photo by Rod Waddington

SAN DIEGO—An inexpensive, rapid, and easy-to-use blood test accurately detected sickle cell disease in young children in Uganda, according to a speaker at the 2018 ASH Annual Meeting.

The test, called HemoTypeSC, uses monoclonal antibodies to detect hemoglobins A, S, and C in a drop of whole blood.

HemoTypeSC costs less than $2 to the end user and delivers results in about 10 minutes.

“This is ideal for use in resource-constrained regions of high prevalence, such as Africa and central India,” said Erik Serrao, PhD, of Silver Lake Research in Azusa, California.

“Early screening plus treatment plus counseling equals saving millions of lives over the coming decades, and we believe HemoTypeSC can form an integral part of the initial part of this equation.”

Dr. Serrao reported results from a study of HemoTypeSC during the late-breaking abstracts session at ASH (abstract LBA-3).

He and his colleagues compared results with the HemoTypeSC test to results with hemoglobin electrophoresis for detection of the phenotypes HbAA (normal), HbAS (sickle cell trait), and HbSS (sickle cell disease).

The investigators compared these two testing methods in 1,000 children between the ages of 1 month and 5 years who were prospectively recruited from hospital wards and outpatient clinics in Uganda.

Results

The initial analysis suggested HemoTypeSC had an overall accuracy of 99.8%, correctly identifying 998 of 1,000 phenotypes as initially determined by electrophoresis.

HemoTypeSC correctly identified 100% of the 720 HbAA specimens and 100% of 182 HbAS specimens.

HemoTypeSC identified as HbSS 98% (96/98) of specimens that were identified as HbSS by electrophoresis. This left two discordant samples, both of which HemoTypeSC identified as HbAS.

Investigators subsequently discovered that both individuals with the discordant samples had previously been diagnosed with sickle cell disease and had received recent transfusions with HbAA blood.

“Therefore, the true phenotype at the time of testing for these samples was HbAS, as hemoglobin A and S were both in the blood,” Dr. Serrao said.

This brought the accuracy rate of HemoTypeSC up to 100%.

Dr. Serrao noted that this study excluded newborns. However, a different study of HemoTypeSC, recently published in the American Journal of Hematology, demonstrated 100% accuracy across multiple phenotypes in the setting of newborn screening.

Implications

Of all the late-breaking abstracts at ASH this year, the study by Dr. Serrao and his colleagues is the one with the potential to save the most lives, according to Mark Crowther, MD, of McMaster University in Hamilton, Ontario, Canada.

He said using current gold-standard methods for diagnosing sickle cell disease is, at minimum, challenging and “frankly impossible” in many low-resource settings because of the cost and the requirement for sophisticated equipment and reliable electricity.

However, he believes HemoTypeSC could change that.

“The ability to diagnose sickle cell disease early and intervene early will result in potentially thousands of infants, who would otherwise die in infancy or early childhood, surviving into adulthood,” Dr. Crowther said.

Dr. Serrao noted that sickle cell disease screening programs have been projected to be cost-effective in Africa. Such programs could even save money for governments over time as budgets are reallocated toward screening, with less money needed for treatment of patients presenting with severe complications in hospitals.

Dr. Serrao reported that he is an employee of Silver Lake Research, which funded this study, approved the study design, and donated HemoTypeSC tests.

Photo by Rod Waddington

SAN DIEGO—An inexpensive, rapid, and easy-to-use blood test accurately detected sickle cell disease in young children in Uganda, according to a speaker at the 2018 ASH Annual Meeting.

The test, called HemoTypeSC, uses monoclonal antibodies to detect hemoglobins A, S, and C in a drop of whole blood.

HemoTypeSC costs less than $2 to the end user and delivers results in about 10 minutes.

“This is ideal for use in resource-constrained regions of high prevalence, such as Africa and central India,” said Erik Serrao, PhD, of Silver Lake Research in Azusa, California.

“Early screening plus treatment plus counseling equals saving millions of lives over the coming decades, and we believe HemoTypeSC can form an integral part of the initial part of this equation.”

Dr. Serrao reported results from a study of HemoTypeSC during the late-breaking abstracts session at ASH (abstract LBA-3).

He and his colleagues compared results with the HemoTypeSC test to results with hemoglobin electrophoresis for detection of the phenotypes HbAA (normal), HbAS (sickle cell trait), and HbSS (sickle cell disease).

The investigators compared these two testing methods in 1,000 children between the ages of 1 month and 5 years who were prospectively recruited from hospital wards and outpatient clinics in Uganda.

Results

The initial analysis suggested HemoTypeSC had an overall accuracy of 99.8%, correctly identifying 998 of 1,000 phenotypes as initially determined by electrophoresis.

HemoTypeSC correctly identified 100% of the 720 HbAA specimens and 100% of 182 HbAS specimens.

HemoTypeSC identified as HbSS 98% (96/98) of specimens that were identified as HbSS by electrophoresis. This left two discordant samples, both of which HemoTypeSC identified as HbAS.

Investigators subsequently discovered that both individuals with the discordant samples had previously been diagnosed with sickle cell disease and had received recent transfusions with HbAA blood.

“Therefore, the true phenotype at the time of testing for these samples was HbAS, as hemoglobin A and S were both in the blood,” Dr. Serrao said.

This brought the accuracy rate of HemoTypeSC up to 100%.

Dr. Serrao noted that this study excluded newborns. However, a different study of HemoTypeSC, recently published in the American Journal of Hematology, demonstrated 100% accuracy across multiple phenotypes in the setting of newborn screening.

Implications

Of all the late-breaking abstracts at ASH this year, the study by Dr. Serrao and his colleagues is the one with the potential to save the most lives, according to Mark Crowther, MD, of McMaster University in Hamilton, Ontario, Canada.

He said using current gold-standard methods for diagnosing sickle cell disease is, at minimum, challenging and “frankly impossible” in many low-resource settings because of the cost and the requirement for sophisticated equipment and reliable electricity.

However, he believes HemoTypeSC could change that.

“The ability to diagnose sickle cell disease early and intervene early will result in potentially thousands of infants, who would otherwise die in infancy or early childhood, surviving into adulthood,” Dr. Crowther said.

Dr. Serrao noted that sickle cell disease screening programs have been projected to be cost-effective in Africa. Such programs could even save money for governments over time as budgets are reallocated toward screening, with less money needed for treatment of patients presenting with severe complications in hospitals.

Dr. Serrao reported that he is an employee of Silver Lake Research, which funded this study, approved the study design, and donated HemoTypeSC tests.

Photo by Rod Waddington

SAN DIEGO—An inexpensive, rapid, and easy-to-use blood test accurately detected sickle cell disease in young children in Uganda, according to a speaker at the 2018 ASH Annual Meeting.

The test, called HemoTypeSC, uses monoclonal antibodies to detect hemoglobins A, S, and C in a drop of whole blood.

HemoTypeSC costs less than $2 to the end user and delivers results in about 10 minutes.

“This is ideal for use in resource-constrained regions of high prevalence, such as Africa and central India,” said Erik Serrao, PhD, of Silver Lake Research in Azusa, California.

“Early screening plus treatment plus counseling equals saving millions of lives over the coming decades, and we believe HemoTypeSC can form an integral part of the initial part of this equation.”

Dr. Serrao reported results from a study of HemoTypeSC during the late-breaking abstracts session at ASH (abstract LBA-3).

He and his colleagues compared results with the HemoTypeSC test to results with hemoglobin electrophoresis for detection of the phenotypes HbAA (normal), HbAS (sickle cell trait), and HbSS (sickle cell disease).

The investigators compared these two testing methods in 1,000 children between the ages of 1 month and 5 years who were prospectively recruited from hospital wards and outpatient clinics in Uganda.

Results

The initial analysis suggested HemoTypeSC had an overall accuracy of 99.8%, correctly identifying 998 of 1,000 phenotypes as initially determined by electrophoresis.

HemoTypeSC correctly identified 100% of the 720 HbAA specimens and 100% of 182 HbAS specimens.

HemoTypeSC identified as HbSS 98% (96/98) of specimens that were identified as HbSS by electrophoresis. This left two discordant samples, both of which HemoTypeSC identified as HbAS.

Investigators subsequently discovered that both individuals with the discordant samples had previously been diagnosed with sickle cell disease and had received recent transfusions with HbAA blood.

“Therefore, the true phenotype at the time of testing for these samples was HbAS, as hemoglobin A and S were both in the blood,” Dr. Serrao said.

This brought the accuracy rate of HemoTypeSC up to 100%.

Dr. Serrao noted that this study excluded newborns. However, a different study of HemoTypeSC, recently published in the American Journal of Hematology, demonstrated 100% accuracy across multiple phenotypes in the setting of newborn screening.

Implications

Of all the late-breaking abstracts at ASH this year, the study by Dr. Serrao and his colleagues is the one with the potential to save the most lives, according to Mark Crowther, MD, of McMaster University in Hamilton, Ontario, Canada.

He said using current gold-standard methods for diagnosing sickle cell disease is, at minimum, challenging and “frankly impossible” in many low-resource settings because of the cost and the requirement for sophisticated equipment and reliable electricity.

However, he believes HemoTypeSC could change that.

“The ability to diagnose sickle cell disease early and intervene early will result in potentially thousands of infants, who would otherwise die in infancy or early childhood, surviving into adulthood,” Dr. Crowther said.

Dr. Serrao noted that sickle cell disease screening programs have been projected to be cost-effective in Africa. Such programs could even save money for governments over time as budgets are reallocated toward screening, with less money needed for treatment of patients presenting with severe complications in hospitals.

Dr. Serrao reported that he is an employee of Silver Lake Research, which funded this study, approved the study design, and donated HemoTypeSC tests.

BETHESDA, MD. – The risk of brain damage from sickle cell disease (SCD) merits more attention, even with progress made in recent decades to prevent strokes, according to Lori Jordan, MD, PhD, of Vanderbilt University, Nashville, Tenn.

“Whether we can see it or not, the same injury we’ve been talking about in the kidney and the liver and other places is occurring in the brain” with sickle cell disease, Dr. Jordan said at Sickle Cell in Focus, a conference held by the National Institutes of Health.

The concern about long-term brain injury reflects major shifts in SCD treatment. Improved medical care has transformed SCD from a disease that often resulted in an early death to more of a chronic condition, Dr. Jordan said, citing research that shows a survival rate of roughly 99% to age 18 years (Br J Haematol. 2016 Jun;173[6]:927-37).

One of the major success stories in SCD treatment also has been using primary prevention steps to cut the risk of overt stroke at least 10-fold, Dr. Jordan said. Primary prevention includes annual scans with transcranial Doppler ultrasound to identify children with SCD at high risk of stroke.

“What’s not changing is that there is silent injury that accumulates” and can cause lifelong harm, she said. “We want to protect our patients long term so that they can have a successful adult life, not just a successful childhood.”

Research done by one of Dr. Jordan’s colleagues at Vanderbilt, Michael R. DeBaun, MD, showed that regular blood-transfusion therapy significantly reduced the incidence of the recurrence of brain infarct in children with sickle cell anemia. (N Engl J Med. 2014 Aug 21;371[8]:699-710).


But the lessons from the work of Dr. DeBaun and his colleagues with their Silent Cerebral Infarct Multi-Center Clinical (SIT) Trial have not yet been fully adopted, Dr. Jordan said. That’s partly due to the inconvenience and cost of routinely administered blood transfusions to prevent silent cerebral infarcts, which, when used long term, cause side effects, she said.

Dr. Jordan said there’s growing interest in identifying patients at high risk for stroke and moving them toward stem cell transplant, though studies are ongoing. She urged greater attention to the high lifetime costs of strokes and other cerebrovascular complications, particularly in children and young adults.

While some of the brain infarcts are small and don’t result in focal weakness of the body, these “silent infarcts” do produce cognitive effects that reduce function, school performance, employment, and quality of life, she said.

“The injury to the brain is present, whether we can see it or not,” Dr. Jordan said. “In these precious patients, slow cognitive decline isn’t acceptable, frankly.”

Dr. Jordan reported having received funding from the American Heart Association and the National Institutes of Health for stroke prevention studies in SCD.

BETHESDA, MD. – The risk of brain damage from sickle cell disease (SCD) merits more attention, even with progress made in recent decades to prevent strokes, according to Lori Jordan, MD, PhD, of Vanderbilt University, Nashville, Tenn.

“Whether we can see it or not, the same injury we’ve been talking about in the kidney and the liver and other places is occurring in the brain” with sickle cell disease, Dr. Jordan said at Sickle Cell in Focus, a conference held by the National Institutes of Health.

The concern about long-term brain injury reflects major shifts in SCD treatment. Improved medical care has transformed SCD from a disease that often resulted in an early death to more of a chronic condition, Dr. Jordan said, citing research that shows a survival rate of roughly 99% to age 18 years (Br J Haematol. 2016 Jun;173[6]:927-37).

One of the major success stories in SCD treatment also has been using primary prevention steps to cut the risk of overt stroke at least 10-fold, Dr. Jordan said. Primary prevention includes annual scans with transcranial Doppler ultrasound to identify children with SCD at high risk of stroke.

“What’s not changing is that there is silent injury that accumulates” and can cause lifelong harm, she said. “We want to protect our patients long term so that they can have a successful adult life, not just a successful childhood.”

Research done by one of Dr. Jordan’s colleagues at Vanderbilt, Michael R. DeBaun, MD, showed that regular blood-transfusion therapy significantly reduced the incidence of the recurrence of brain infarct in children with sickle cell anemia. (N Engl J Med. 2014 Aug 21;371[8]:699-710).


But the lessons from the work of Dr. DeBaun and his colleagues with their Silent Cerebral Infarct Multi-Center Clinical (SIT) Trial have not yet been fully adopted, Dr. Jordan said. That’s partly due to the inconvenience and cost of routinely administered blood transfusions to prevent silent cerebral infarcts, which, when used long term, cause side effects, she said.

Dr. Jordan said there’s growing interest in identifying patients at high risk for stroke and moving them toward stem cell transplant, though studies are ongoing. She urged greater attention to the high lifetime costs of strokes and other cerebrovascular complications, particularly in children and young adults.

While some of the brain infarcts are small and don’t result in focal weakness of the body, these “silent infarcts” do produce cognitive effects that reduce function, school performance, employment, and quality of life, she said.

“The injury to the brain is present, whether we can see it or not,” Dr. Jordan said. “In these precious patients, slow cognitive decline isn’t acceptable, frankly.”

Dr. Jordan reported having received funding from the American Heart Association and the National Institutes of Health for stroke prevention studies in SCD.

BETHESDA, MD. – The risk of brain damage from sickle cell disease (SCD) merits more attention, even with progress made in recent decades to prevent strokes, according to Lori Jordan, MD, PhD, of Vanderbilt University, Nashville, Tenn.

“Whether we can see it or not, the same injury we’ve been talking about in the kidney and the liver and other places is occurring in the brain” with sickle cell disease, Dr. Jordan said at Sickle Cell in Focus, a conference held by the National Institutes of Health.

The concern about long-term brain injury reflects major shifts in SCD treatment. Improved medical care has transformed SCD from a disease that often resulted in an early death to more of a chronic condition, Dr. Jordan said, citing research that shows a survival rate of roughly 99% to age 18 years (Br J Haematol. 2016 Jun;173[6]:927-37).

One of the major success stories in SCD treatment also has been using primary prevention steps to cut the risk of overt stroke at least 10-fold, Dr. Jordan said. Primary prevention includes annual scans with transcranial Doppler ultrasound to identify children with SCD at high risk of stroke.

“What’s not changing is that there is silent injury that accumulates” and can cause lifelong harm, she said. “We want to protect our patients long term so that they can have a successful adult life, not just a successful childhood.”

Research done by one of Dr. Jordan’s colleagues at Vanderbilt, Michael R. DeBaun, MD, showed that regular blood-transfusion therapy significantly reduced the incidence of the recurrence of brain infarct in children with sickle cell anemia. (N Engl J Med. 2014 Aug 21;371[8]:699-710).


But the lessons from the work of Dr. DeBaun and his colleagues with their Silent Cerebral Infarct Multi-Center Clinical (SIT) Trial have not yet been fully adopted, Dr. Jordan said. That’s partly due to the inconvenience and cost of routinely administered blood transfusions to prevent silent cerebral infarcts, which, when used long term, cause side effects, she said.

Dr. Jordan said there’s growing interest in identifying patients at high risk for stroke and moving them toward stem cell transplant, though studies are ongoing. She urged greater attention to the high lifetime costs of strokes and other cerebrovascular complications, particularly in children and young adults.

While some of the brain infarcts are small and don’t result in focal weakness of the body, these “silent infarcts” do produce cognitive effects that reduce function, school performance, employment, and quality of life, she said.

“The injury to the brain is present, whether we can see it or not,” Dr. Jordan said. “In these precious patients, slow cognitive decline isn’t acceptable, frankly.”

Dr. Jordan reported having received funding from the American Heart Association and the National Institutes of Health for stroke prevention studies in SCD.

SAN DIEGO – Don’t let all your patients with sickle cell anemia (SCA) and sickle cell trait (SCT) off the hook when it comes to exercise. That was the advice from Robert I. Liem, MD, a pediatric hematologist-oncologist who studies fitness.

While some patients may face risk, these conditions should pose less of a barrier to moderate- and even high-intensity exercise, Dr. Liem, of Ann & Robert H. Lurie Children’s Hospital of Chicago and Northwestern University, Chicago, said at the annual meeting of the American Society of Hematology.

“Instead of just focusing on potential harms, we should consider a paradigm shift, especially in sickle cell anemia,” he said. “There, we can start to consider the benefits of exercise, which may include some disease-modifying effects.”

There have been no formal studies into whether high-intensity exercise poses harm in patients with SCA, Dr. Liem noted. Why? There are several reasons, he said, including concern that exercise could increase sickling of red blood cells and assumptions about “sedentary behavior” in SCA.

However, there are indications that factors other than SCA may be reducing fitness in this population, a fact that could potentially be reversed by exercise.

Dr. Liem led a study that found “children and young adults with SCA have reduced exercise capacity attributable to factors independent of anemia.” The study showed that peak VO₂ was 30% lower in children and young adults with SCA, compared with controls (Physiol Rep. 2015. doi: 10.14814/phy2.12338).

There are many possible explanations for this, he said, including patient-related factors such as pain during exercise and poor access to fitness resources.

Another study found low fitness in 83% of adults with SCA and identified chronic anemia as the most important factor (Am J Hematol. 2014 Aug;89[8]:819-24).

In patients with sickle cell trait, which Dr. Liem said affects an estimated 6%-9% of African-Americans, early reports of sudden death appeared in the 1960s and 1970s, and recent studies have provided more insight into the risk.

In 2012, a study tracked NCAA student athletes and found that Division I football players with SCT faced a 37-fold higher risk of exertion-related death than did athletes without SCT. Five players with SCT, all black and all Division I football players, had died over a 5-year period (Br J Sports Med 2012 Apr;46[5]:325-30).

A 2016 study, meanwhile, tracked more than 47,000 black soldiers in the U.S. Army and found those with SCT didn’t face a higher risk of death although they did have a “significantly higher risk” of exertional rhabdomyolysis (N Engl J Med. 2016 Aug 4; 375[5]:435-42).

While the cause of exercise-related harm in SCT isn’t fully understood, Dr. Liem said, it’s possible that extreme states such as severe dehydration, acidosis, and hypoxemia may trigger sickling. A combination of SCT, extreme exercise, heat, and genetic predisposition could produce harm by creating a “perfect storm,” he added.

Should patients with SCA or SCT exercise? Yes, Dr. Liem said, pointing to the importance of fitness in the general population.

Exercising to volitional exhaustion appears to be safe in children and adults with SCA, he said, and lack of exercise could lead to a variety of negative effects on growth in children and on quality of life.

There are “limited but promising data” linking exercise to benefits in SCA and SCT populations, he said.

Moving forward, Dr. Liem noted that guidelines from the NCAA and National Athletic Trainers’ Association offer insight into exercise best practices in SCT. They’re designed to promote acclimation during training, access to fluids, and prompt recognition of symptoms of heat-related illness and a condition known as “exercise collapse associated with sickle trait.”

However, there are no guidelines for exercise in SCA and it’s not helpful to let patients set limits on themselves based on the symptoms they experience, he said.

Dr. Liem reported having no relevant financial disclosures.

SAN DIEGO – Don’t let all your patients with sickle cell anemia (SCA) and sickle cell trait (SCT) off the hook when it comes to exercise. That was the advice from Robert I. Liem, MD, a pediatric hematologist-oncologist who studies fitness.

While some patients may face risk, these conditions should pose less of a barrier to moderate- and even high-intensity exercise, Dr. Liem, of Ann & Robert H. Lurie Children’s Hospital of Chicago and Northwestern University, Chicago, said at the annual meeting of the American Society of Hematology.

“Instead of just focusing on potential harms, we should consider a paradigm shift, especially in sickle cell anemia,” he said. “There, we can start to consider the benefits of exercise, which may include some disease-modifying effects.”

There have been no formal studies into whether high-intensity exercise poses harm in patients with SCA, Dr. Liem noted. Why? There are several reasons, he said, including concern that exercise could increase sickling of red blood cells and assumptions about “sedentary behavior” in SCA.

However, there are indications that factors other than SCA may be reducing fitness in this population, a fact that could potentially be reversed by exercise.

Dr. Liem led a study that found “children and young adults with SCA have reduced exercise capacity attributable to factors independent of anemia.” The study showed that peak VO₂ was 30% lower in children and young adults with SCA, compared with controls (Physiol Rep. 2015. doi: 10.14814/phy2.12338).

There are many possible explanations for this, he said, including patient-related factors such as pain during exercise and poor access to fitness resources.

Another study found low fitness in 83% of adults with SCA and identified chronic anemia as the most important factor (Am J Hematol. 2014 Aug;89[8]:819-24).

In patients with sickle cell trait, which Dr. Liem said affects an estimated 6%-9% of African-Americans, early reports of sudden death appeared in the 1960s and 1970s, and recent studies have provided more insight into the risk.

In 2012, a study tracked NCAA student athletes and found that Division I football players with SCT faced a 37-fold higher risk of exertion-related death than did athletes without SCT. Five players with SCT, all black and all Division I football players, had died over a 5-year period (Br J Sports Med 2012 Apr;46[5]:325-30).

A 2016 study, meanwhile, tracked more than 47,000 black soldiers in the U.S. Army and found those with SCT didn’t face a higher risk of death although they did have a “significantly higher risk” of exertional rhabdomyolysis (N Engl J Med. 2016 Aug 4; 375[5]:435-42).

While the cause of exercise-related harm in SCT isn’t fully understood, Dr. Liem said, it’s possible that extreme states such as severe dehydration, acidosis, and hypoxemia may trigger sickling. A combination of SCT, extreme exercise, heat, and genetic predisposition could produce harm by creating a “perfect storm,” he added.

Should patients with SCA or SCT exercise? Yes, Dr. Liem said, pointing to the importance of fitness in the general population.

Exercising to volitional exhaustion appears to be safe in children and adults with SCA, he said, and lack of exercise could lead to a variety of negative effects on growth in children and on quality of life.

There are “limited but promising data” linking exercise to benefits in SCA and SCT populations, he said.

Moving forward, Dr. Liem noted that guidelines from the NCAA and National Athletic Trainers’ Association offer insight into exercise best practices in SCT. They’re designed to promote acclimation during training, access to fluids, and prompt recognition of symptoms of heat-related illness and a condition known as “exercise collapse associated with sickle trait.”

However, there are no guidelines for exercise in SCA and it’s not helpful to let patients set limits on themselves based on the symptoms they experience, he said.

Dr. Liem reported having no relevant financial disclosures.

SAN DIEGO – Don’t let all your patients with sickle cell anemia (SCA) and sickle cell trait (SCT) off the hook when it comes to exercise. That was the advice from Robert I. Liem, MD, a pediatric hematologist-oncologist who studies fitness.

While some patients may face risk, these conditions should pose less of a barrier to moderate- and even high-intensity exercise, Dr. Liem, of Ann & Robert H. Lurie Children’s Hospital of Chicago and Northwestern University, Chicago, said at the annual meeting of the American Society of Hematology.

“Instead of just focusing on potential harms, we should consider a paradigm shift, especially in sickle cell anemia,” he said. “There, we can start to consider the benefits of exercise, which may include some disease-modifying effects.”

There have been no formal studies into whether high-intensity exercise poses harm in patients with SCA, Dr. Liem noted. Why? There are several reasons, he said, including concern that exercise could increase sickling of red blood cells and assumptions about “sedentary behavior” in SCA.

However, there are indications that factors other than SCA may be reducing fitness in this population, a fact that could potentially be reversed by exercise.

Dr. Liem led a study that found “children and young adults with SCA have reduced exercise capacity attributable to factors independent of anemia.” The study showed that peak VO₂ was 30% lower in children and young adults with SCA, compared with controls (Physiol Rep. 2015. doi: 10.14814/phy2.12338).

There are many possible explanations for this, he said, including patient-related factors such as pain during exercise and poor access to fitness resources.

Another study found low fitness in 83% of adults with SCA and identified chronic anemia as the most important factor (Am J Hematol. 2014 Aug;89[8]:819-24).

In patients with sickle cell trait, which Dr. Liem said affects an estimated 6%-9% of African-Americans, early reports of sudden death appeared in the 1960s and 1970s, and recent studies have provided more insight into the risk.

In 2012, a study tracked NCAA student athletes and found that Division I football players with SCT faced a 37-fold higher risk of exertion-related death than did athletes without SCT. Five players with SCT, all black and all Division I football players, had died over a 5-year period (Br J Sports Med 2012 Apr;46[5]:325-30).

A 2016 study, meanwhile, tracked more than 47,000 black soldiers in the U.S. Army and found those with SCT didn’t face a higher risk of death although they did have a “significantly higher risk” of exertional rhabdomyolysis (N Engl J Med. 2016 Aug 4; 375[5]:435-42).

While the cause of exercise-related harm in SCT isn’t fully understood, Dr. Liem said, it’s possible that extreme states such as severe dehydration, acidosis, and hypoxemia may trigger sickling. A combination of SCT, extreme exercise, heat, and genetic predisposition could produce harm by creating a “perfect storm,” he added.

Should patients with SCA or SCT exercise? Yes, Dr. Liem said, pointing to the importance of fitness in the general population.

Exercising to volitional exhaustion appears to be safe in children and adults with SCA, he said, and lack of exercise could lead to a variety of negative effects on growth in children and on quality of life.

There are “limited but promising data” linking exercise to benefits in SCA and SCT populations, he said.

Moving forward, Dr. Liem noted that guidelines from the NCAA and National Athletic Trainers’ Association offer insight into exercise best practices in SCT. They’re designed to promote acclimation during training, access to fluids, and prompt recognition of symptoms of heat-related illness and a condition known as “exercise collapse associated with sickle trait.”

However, there are no guidelines for exercise in SCA and it’s not helpful to let patients set limits on themselves based on the symptoms they experience, he said.

Dr. Liem reported having no relevant financial disclosures.

© ASH/Luke Franke 2018

SAN DIEGO—Emapalumab, an interferon gamma-blocking antibody, controls disease activity and has a favorable safety profile in pediatric patients with primary hemophagocytic lymphohistiocytosis (HLH), according to research presented at the 2018 ASH Annual Meeting.

Investigators believe emapalumab, which was recently approved to treat HLH in the United States, should be considered a new therapeutic option for this rare and life-threatening syndrome because of the drug’s targeted mode of action.

Multiple lines of evidence have pointed to interferon gamma as a “rational target” in HLH, and elevated levels of interferon gamma are consistently observed in patients with HLH, said Franco Locatelli, MD, of Ospedale Pediatrico Bambino Gesù in Rome, Italy.

Emapalumab binds to its target with high affinity, recognizing both free and receptor-bound interferon gamma, he added.

Dr. Locatelli described trial results with emapalumab in children with HLH during the late-breaking abstracts session at ASH (abstract LBA-6).

This phase 2/3 study (NCT01818492) included 34 children with primary HLH—7 who were treatment-naïve and 27 who had failed conventional HLH therapy.

The patients received emapalumab intravenously with concomitant dexamethasone for up to 8 weeks or extended to the point of allogeneic hematopoietic stem cell transplant if needed.

The study met its primary endpoint of overall response rate higher than 40%, Dr. Locatelli reported.

The overall response rate was 64.7% for all 34 treated patients (95% confidence interval [CI], 46% to 80%; P=0.0031) and 63% for the 27 patients who had failed prior therapy (95% CI, 42% to 81%; P=0.0134).

Response was rapid, occurring at a median of 8 days after starting emapalumab, and patients were in response for a median of 75% of days during treatment, Dr. Locatelli said.

Ninety-four percent of patients had at least one adverse event (AE), and 63% had serious AEs. Common AEs included infections (56%), hypertension (35%), infusion-related reactions (27%), and pyrexia (24%).

One patient had disseminated histoplasmosis that led to discontinuation of emapalumab but resolved with appropriate treatment.

This study was sponsored by Novimmune. Investigators provided disclosures related to Sobi, Novimmune, Rocket Pharmaceuticals, Inc., AB2Bio, Novartis, Eli Lilly, Sanofi, UCB, Pfizer, and AbbVie. Two investigators reported employment with Novimmune.

© ASH/Luke Franke 2018

SAN DIEGO—Emapalumab, an interferon gamma-blocking antibody, controls disease activity and has a favorable safety profile in pediatric patients with primary hemophagocytic lymphohistiocytosis (HLH), according to research presented at the 2018 ASH Annual Meeting.

Investigators believe emapalumab, which was recently approved to treat HLH in the United States, should be considered a new therapeutic option for this rare and life-threatening syndrome because of the drug’s targeted mode of action.

Multiple lines of evidence have pointed to interferon gamma as a “rational target” in HLH, and elevated levels of interferon gamma are consistently observed in patients with HLH, said Franco Locatelli, MD, of Ospedale Pediatrico Bambino Gesù in Rome, Italy.

Emapalumab binds to its target with high affinity, recognizing both free and receptor-bound interferon gamma, he added.

Dr. Locatelli described trial results with emapalumab in children with HLH during the late-breaking abstracts session at ASH (abstract LBA-6).

This phase 2/3 study (NCT01818492) included 34 children with primary HLH—7 who were treatment-naïve and 27 who had failed conventional HLH therapy.

The patients received emapalumab intravenously with concomitant dexamethasone for up to 8 weeks or extended to the point of allogeneic hematopoietic stem cell transplant if needed.

The study met its primary endpoint of overall response rate higher than 40%, Dr. Locatelli reported.

The overall response rate was 64.7% for all 34 treated patients (95% confidence interval [CI], 46% to 80%; P=0.0031) and 63% for the 27 patients who had failed prior therapy (95% CI, 42% to 81%; P=0.0134).

Response was rapid, occurring at a median of 8 days after starting emapalumab, and patients were in response for a median of 75% of days during treatment, Dr. Locatelli said.

Ninety-four percent of patients had at least one adverse event (AE), and 63% had serious AEs. Common AEs included infections (56%), hypertension (35%), infusion-related reactions (27%), and pyrexia (24%).

One patient had disseminated histoplasmosis that led to discontinuation of emapalumab but resolved with appropriate treatment.

This study was sponsored by Novimmune. Investigators provided disclosures related to Sobi, Novimmune, Rocket Pharmaceuticals, Inc., AB2Bio, Novartis, Eli Lilly, Sanofi, UCB, Pfizer, and AbbVie. Two investigators reported employment with Novimmune.

© ASH/Luke Franke 2018

SAN DIEGO—Emapalumab, an interferon gamma-blocking antibody, controls disease activity and has a favorable safety profile in pediatric patients with primary hemophagocytic lymphohistiocytosis (HLH), according to research presented at the 2018 ASH Annual Meeting.

Investigators believe emapalumab, which was recently approved to treat HLH in the United States, should be considered a new therapeutic option for this rare and life-threatening syndrome because of the drug’s targeted mode of action.

Multiple lines of evidence have pointed to interferon gamma as a “rational target” in HLH, and elevated levels of interferon gamma are consistently observed in patients with HLH, said Franco Locatelli, MD, of Ospedale Pediatrico Bambino Gesù in Rome, Italy.

Emapalumab binds to its target with high affinity, recognizing both free and receptor-bound interferon gamma, he added.

Dr. Locatelli described trial results with emapalumab in children with HLH during the late-breaking abstracts session at ASH (abstract LBA-6).

This phase 2/3 study (NCT01818492) included 34 children with primary HLH—7 who were treatment-naïve and 27 who had failed conventional HLH therapy.

The patients received emapalumab intravenously with concomitant dexamethasone for up to 8 weeks or extended to the point of allogeneic hematopoietic stem cell transplant if needed.

The study met its primary endpoint of overall response rate higher than 40%, Dr. Locatelli reported.

The overall response rate was 64.7% for all 34 treated patients (95% confidence interval [CI], 46% to 80%; P=0.0031) and 63% for the 27 patients who had failed prior therapy (95% CI, 42% to 81%; P=0.0134).

Response was rapid, occurring at a median of 8 days after starting emapalumab, and patients were in response for a median of 75% of days during treatment, Dr. Locatelli said.

Ninety-four percent of patients had at least one adverse event (AE), and 63% had serious AEs. Common AEs included infections (56%), hypertension (35%), infusion-related reactions (27%), and pyrexia (24%).

One patient had disseminated histoplasmosis that led to discontinuation of emapalumab but resolved with appropriate treatment.

This study was sponsored by Novimmune. Investigators provided disclosures related to Sobi, Novimmune, Rocket Pharmaceuticals, Inc., AB2Bio, Novartis, Eli Lilly, Sanofi, UCB, Pfizer, and AbbVie. Two investigators reported employment with Novimmune.

SAN DIEGO – An inexpensive, rapid, and easy-to-use blood test was more than 99% accurate in detecting sickle cell disease in young children in sub-Saharan Africa, according to research reported at the annual meeting of the American Society of Hematology.

Courtesy American Society of Hematology

The test, called HemoTypeSC, uses monoclonal antibodies to detect hemoglobins A, S, and C in a drop of whole blood, said investigator Erik Serrao, PhD, of Silver Lake Research in Azusa, Calif.

Findings from the diagnostic accuracy trial, which included 1,000 children in Uganda, suggest that the immunoassay is a promising tool to enable newborn and general population screening in resource-constrained regions of high prevalence, such as Africa and India.

“Early screening plus treatment plus counseling equals saving millions of lives over the coming decades, and we believe HemoTypeSC can form an integral part of the initial part of this equation,” Dr. Serrao said during a late-breaking abstract session at the meeting.

Each test kit costs less than $2 to the end user; requires no electricity, special equipment, or training; and delivers results in about 10 minutes, he added.


Of all the late-breaking abstracts at ASH this year, the study by Dr. Serrao and his colleagues is the one with the potential to save the most lives, said Mark Crowther, MD, of McMaster University, Hamilton, Ont.

“The ability to diagnose sickle cell disease early and intervene early will result in potentially thousands of infants, who would otherwise die in infancy or early childhood, surviving into adulthood,” Dr. Crowther said during a press briefing.

Using current gold standard methods for diagnosing sickle cell disease is, at minimum, challenging and “frankly impossible” in many low-resource settings, because of the cost and the requirement for sophisticated equipment and reliable electricity, Dr. Crowther added.

In the study, investigators compared results of the HemoTypeSC test with hemoglobin electrophoresis for detection of the phenotypes HbAA (normal), HbAS (sickle cell trait), and HbSS (sickle cell disease). They compared these two testing methods in 1,000 children between the ages of 1 month and 5 years who were prospectively recruited from hospital wards and outpatient clinics in Uganda.

The immunoassay had an overall accuracy of 99.8%, correctly identifying 998 of 1,000 phenotypes as initially determined by electrophoresis. Specifically, the test correctly identified 100% of the 720 HbAA specimens, 100% of 182 HbAS specimens, and 98% of HbSS, or 96 of 98 specimens, leaving just 2 discordant samples, both of which HemoTypeSC identified as HbAS.

Investigators subsequently discovered that both of the individuals with the discordant samples had previously been diagnosed with sickle cell disease and had received recent transfusions. Both cases were subsequently confirmed as HbSS in review of previous diagnostic result reports, bringing the accuracy rate up to 100% in a secondary analysis also reported at the meeting.

Although this particular study excluded newborns, a different study of the immunoassay, recently published in the American Journal of Hematology, demonstrated 100% accuracy across multiple phenotypes in the setting of newborn screening (2018 Oct 5. doi: 10.1002/ajh.25305).

Sickle cell disease screening programs have been projected to be cost effective in Africa, Dr. Serrano said, and could even save money for governments over time as budgets are reallocated toward screening, with less money needed for treatment of patients presenting with severe complications in hospitals.

Dr. Serrao reported that he is an employee of Silver Lake Research, which funded the study, approved the study design, and donated HemoTypeSC tests.

On March 11, 2019, the editors of Blood, an ASH journal, retracted the abstract for this study. The second listed author on the abstract said that it was submitted without his consent or approval. The retraction makes no statement on the underlying science of the study, the editors noted.

This article was updated on 3/14/2019.

SOURCE: Serrao E et al. ASH 2018, Abstract LBA-3.

SAN DIEGO – An inexpensive, rapid, and easy-to-use blood test was more than 99% accurate in detecting sickle cell disease in young children in sub-Saharan Africa, according to research reported at the annual meeting of the American Society of Hematology.

Courtesy American Society of Hematology

The test, called HemoTypeSC, uses monoclonal antibodies to detect hemoglobins A, S, and C in a drop of whole blood, said investigator Erik Serrao, PhD, of Silver Lake Research in Azusa, Calif.

Findings from the diagnostic accuracy trial, which included 1,000 children in Uganda, suggest that the immunoassay is a promising tool to enable newborn and general population screening in resource-constrained regions of high prevalence, such as Africa and India.

“Early screening plus treatment plus counseling equals saving millions of lives over the coming decades, and we believe HemoTypeSC can form an integral part of the initial part of this equation,” Dr. Serrao said during a late-breaking abstract session at the meeting.

Each test kit costs less than $2 to the end user; requires no electricity, special equipment, or training; and delivers results in about 10 minutes, he added.


Of all the late-breaking abstracts at ASH this year, the study by Dr. Serrao and his colleagues is the one with the potential to save the most lives, said Mark Crowther, MD, of McMaster University, Hamilton, Ont.

“The ability to diagnose sickle cell disease early and intervene early will result in potentially thousands of infants, who would otherwise die in infancy or early childhood, surviving into adulthood,” Dr. Crowther said during a press briefing.

Using current gold standard methods for diagnosing sickle cell disease is, at minimum, challenging and “frankly impossible” in many low-resource settings, because of the cost and the requirement for sophisticated equipment and reliable electricity, Dr. Crowther added.

In the study, investigators compared results of the HemoTypeSC test with hemoglobin electrophoresis for detection of the phenotypes HbAA (normal), HbAS (sickle cell trait), and HbSS (sickle cell disease). They compared these two testing methods in 1,000 children between the ages of 1 month and 5 years who were prospectively recruited from hospital wards and outpatient clinics in Uganda.

The immunoassay had an overall accuracy of 99.8%, correctly identifying 998 of 1,000 phenotypes as initially determined by electrophoresis. Specifically, the test correctly identified 100% of the 720 HbAA specimens, 100% of 182 HbAS specimens, and 98% of HbSS, or 96 of 98 specimens, leaving just 2 discordant samples, both of which HemoTypeSC identified as HbAS.

Investigators subsequently discovered that both of the individuals with the discordant samples had previously been diagnosed with sickle cell disease and had received recent transfusions. Both cases were subsequently confirmed as HbSS in review of previous diagnostic result reports, bringing the accuracy rate up to 100% in a secondary analysis also reported at the meeting.

Although this particular study excluded newborns, a different study of the immunoassay, recently published in the American Journal of Hematology, demonstrated 100% accuracy across multiple phenotypes in the setting of newborn screening (2018 Oct 5. doi: 10.1002/ajh.25305).

Sickle cell disease screening programs have been projected to be cost effective in Africa, Dr. Serrano said, and could even save money for governments over time as budgets are reallocated toward screening, with less money needed for treatment of patients presenting with severe complications in hospitals.

Dr. Serrao reported that he is an employee of Silver Lake Research, which funded the study, approved the study design, and donated HemoTypeSC tests.

On March 11, 2019, the editors of Blood, an ASH journal, retracted the abstract for this study. The second listed author on the abstract said that it was submitted without his consent or approval. The retraction makes no statement on the underlying science of the study, the editors noted.

This article was updated on 3/14/2019.

SOURCE: Serrao E et al. ASH 2018, Abstract LBA-3.

SAN DIEGO – An inexpensive, rapid, and easy-to-use blood test was more than 99% accurate in detecting sickle cell disease in young children in sub-Saharan Africa, according to research reported at the annual meeting of the American Society of Hematology.

Courtesy American Society of Hematology

The test, called HemoTypeSC, uses monoclonal antibodies to detect hemoglobins A, S, and C in a drop of whole blood, said investigator Erik Serrao, PhD, of Silver Lake Research in Azusa, Calif.

Findings from the diagnostic accuracy trial, which included 1,000 children in Uganda, suggest that the immunoassay is a promising tool to enable newborn and general population screening in resource-constrained regions of high prevalence, such as Africa and India.

“Early screening plus treatment plus counseling equals saving millions of lives over the coming decades, and we believe HemoTypeSC can form an integral part of the initial part of this equation,” Dr. Serrao said during a late-breaking abstract session at the meeting.

Each test kit costs less than $2 to the end user; requires no electricity, special equipment, or training; and delivers results in about 10 minutes, he added.


Of all the late-breaking abstracts at ASH this year, the study by Dr. Serrao and his colleagues is the one with the potential to save the most lives, said Mark Crowther, MD, of McMaster University, Hamilton, Ont.

“The ability to diagnose sickle cell disease early and intervene early will result in potentially thousands of infants, who would otherwise die in infancy or early childhood, surviving into adulthood,” Dr. Crowther said during a press briefing.

Using current gold standard methods for diagnosing sickle cell disease is, at minimum, challenging and “frankly impossible” in many low-resource settings, because of the cost and the requirement for sophisticated equipment and reliable electricity, Dr. Crowther added.

In the study, investigators compared results of the HemoTypeSC test with hemoglobin electrophoresis for detection of the phenotypes HbAA (normal), HbAS (sickle cell trait), and HbSS (sickle cell disease). They compared these two testing methods in 1,000 children between the ages of 1 month and 5 years who were prospectively recruited from hospital wards and outpatient clinics in Uganda.

The immunoassay had an overall accuracy of 99.8%, correctly identifying 998 of 1,000 phenotypes as initially determined by electrophoresis. Specifically, the test correctly identified 100% of the 720 HbAA specimens, 100% of 182 HbAS specimens, and 98% of HbSS, or 96 of 98 specimens, leaving just 2 discordant samples, both of which HemoTypeSC identified as HbAS.

Investigators subsequently discovered that both of the individuals with the discordant samples had previously been diagnosed with sickle cell disease and had received recent transfusions. Both cases were subsequently confirmed as HbSS in review of previous diagnostic result reports, bringing the accuracy rate up to 100% in a secondary analysis also reported at the meeting.

Although this particular study excluded newborns, a different study of the immunoassay, recently published in the American Journal of Hematology, demonstrated 100% accuracy across multiple phenotypes in the setting of newborn screening (2018 Oct 5. doi: 10.1002/ajh.25305).

Sickle cell disease screening programs have been projected to be cost effective in Africa, Dr. Serrano said, and could even save money for governments over time as budgets are reallocated toward screening, with less money needed for treatment of patients presenting with severe complications in hospitals.

Dr. Serrao reported that he is an employee of Silver Lake Research, which funded the study, approved the study design, and donated HemoTypeSC tests.

On March 11, 2019, the editors of Blood, an ASH journal, retracted the abstract for this study. The second listed author on the abstract said that it was submitted without his consent or approval. The retraction makes no statement on the underlying science of the study, the editors noted.

This article was updated on 3/14/2019.

SOURCE: Serrao E et al. ASH 2018, Abstract LBA-3.