Cellular Therapy

A radioimmunotherapeutic drug for conditioning relapsed and refractory acute myeloid leukemia (AML) patients for a hematopoietic stem cell transplant has been granted orphan drug designation by the Food and Drug Administration.

Iomab-B is a radioimmunoconjugate consisting of the murine monoclonal antibody BC8 and an iodine-131 radioisotope. The Fred Hutchinson Cancer Research Center developed BC8 to target CD45, a panleukocytic antigen widely expressed on white blood cells. “When labeled with radioactive isotopes, BC8 carries radioactivity directly to the site of cancerous growth and bone marrow while avoiding effects of radiation on most healthy tissues,” says a statement from Actinium Pharmaceuticals, which would market the drug.

Iomab-B will be tested in a multicenter trial that will include 150 patients over age 55 with refractory and relapsed AML. “There has not been a new drug approved for relapsed and refractory AML patients over the age of 55 in decades and with Iomab-B being the only therapy of its kind, we are pleased to have achieved this important milestone,” Sandesh Seth, executive chairman of Actinium, said in the statement.

[email protected]

A radioimmunotherapeutic drug for conditioning relapsed and refractory acute myeloid leukemia (AML) patients for a hematopoietic stem cell transplant has been granted orphan drug designation by the Food and Drug Administration.

Iomab-B is a radioimmunoconjugate consisting of the murine monoclonal antibody BC8 and an iodine-131 radioisotope. The Fred Hutchinson Cancer Research Center developed BC8 to target CD45, a panleukocytic antigen widely expressed on white blood cells. “When labeled with radioactive isotopes, BC8 carries radioactivity directly to the site of cancerous growth and bone marrow while avoiding effects of radiation on most healthy tissues,” says a statement from Actinium Pharmaceuticals, which would market the drug.

Iomab-B will be tested in a multicenter trial that will include 150 patients over age 55 with refractory and relapsed AML. “There has not been a new drug approved for relapsed and refractory AML patients over the age of 55 in decades and with Iomab-B being the only therapy of its kind, we are pleased to have achieved this important milestone,” Sandesh Seth, executive chairman of Actinium, said in the statement.

[email protected]

A radioimmunotherapeutic drug for conditioning relapsed and refractory acute myeloid leukemia (AML) patients for a hematopoietic stem cell transplant has been granted orphan drug designation by the Food and Drug Administration.

Iomab-B is a radioimmunoconjugate consisting of the murine monoclonal antibody BC8 and an iodine-131 radioisotope. The Fred Hutchinson Cancer Research Center developed BC8 to target CD45, a panleukocytic antigen widely expressed on white blood cells. “When labeled with radioactive isotopes, BC8 carries radioactivity directly to the site of cancerous growth and bone marrow while avoiding effects of radiation on most healthy tissues,” says a statement from Actinium Pharmaceuticals, which would market the drug.

Iomab-B will be tested in a multicenter trial that will include 150 patients over age 55 with refractory and relapsed AML. “There has not been a new drug approved for relapsed and refractory AML patients over the age of 55 in decades and with Iomab-B being the only therapy of its kind, we are pleased to have achieved this important milestone,” Sandesh Seth, executive chairman of Actinium, said in the statement.

[email protected]

Defibrotide sodium has been approved to treat hepatic veno-occlusive disease (VOD) in patients with renal or pulmonary dysfunction following a hematopoietic stem cell transplantation, the Food and Drug Administration has announced.

The drug, which will be marketed as Defitelio by Jazz Pharmaceuticals, was tested in two prospective clinical trials and an expanded access study that included a total of 528 patients with hepatic VOD and multiorgan dysfunction following a transplantation. All patients received 6.25 mg/kg doses of the drug intravenously, every 6 hours until resolution of VOD. The percentages of patients surviving more than 100 days after receiving a stem cell transplantation in each of the studies were 38%, 44%, and 45%, respectively, according to a statement from the FDA.

Contraindications for taking the drug are concurrent use of anticoagulants or fibrinolytic therapies.

Hypotension, diarrhea, vomiting, nausea, and epistaxis are the most common adverse reactions to the drug.

Full prescribing information is available at the FDA website.

[email protected]

Defibrotide sodium has been approved to treat hepatic veno-occlusive disease (VOD) in patients with renal or pulmonary dysfunction following a hematopoietic stem cell transplantation, the Food and Drug Administration has announced.

The drug, which will be marketed as Defitelio by Jazz Pharmaceuticals, was tested in two prospective clinical trials and an expanded access study that included a total of 528 patients with hepatic VOD and multiorgan dysfunction following a transplantation. All patients received 6.25 mg/kg doses of the drug intravenously, every 6 hours until resolution of VOD. The percentages of patients surviving more than 100 days after receiving a stem cell transplantation in each of the studies were 38%, 44%, and 45%, respectively, according to a statement from the FDA.

Contraindications for taking the drug are concurrent use of anticoagulants or fibrinolytic therapies.

Hypotension, diarrhea, vomiting, nausea, and epistaxis are the most common adverse reactions to the drug.

Full prescribing information is available at the FDA website.

[email protected]

Defibrotide sodium has been approved to treat hepatic veno-occlusive disease (VOD) in patients with renal or pulmonary dysfunction following a hematopoietic stem cell transplantation, the Food and Drug Administration has announced.

The drug, which will be marketed as Defitelio by Jazz Pharmaceuticals, was tested in two prospective clinical trials and an expanded access study that included a total of 528 patients with hepatic VOD and multiorgan dysfunction following a transplantation. All patients received 6.25 mg/kg doses of the drug intravenously, every 6 hours until resolution of VOD. The percentages of patients surviving more than 100 days after receiving a stem cell transplantation in each of the studies were 38%, 44%, and 45%, respectively, according to a statement from the FDA.

Contraindications for taking the drug are concurrent use of anticoagulants or fibrinolytic therapies.

Hypotension, diarrhea, vomiting, nausea, and epistaxis are the most common adverse reactions to the drug.

Full prescribing information is available at the FDA website.

[email protected]

WASHINGTON – Children who have had a hematopoietic stem cell transplant (HSCT) have an increased risk of benign and atypical nevi, Dr. Johanna Sheu reported at the annual meeting of the American Academy of Dermatology.

These patients need to have routine skin exams and be educated about sun protection needs, she said. Based on her study, these needs are not routinely met.

At least 1 year after undergoing HSCT at Boston Children’s Hospital, 85 posttransplant patients had significantly more nevi and more atypical nevi than did 85 healthy controls who were matched by age, gender, and Fitzpatrick skin type. In addition, 41% of the transplant recipients had at least one actinic keratosis, a basal or squamous cell carcinoma, or a solar lentigo; 11% had at least one nevus spilus.

Moreover, “sun protection … and dermatology follow-up was poor” among the transplant recipients, said Dr. Sheu, of MassGeneral Hospital for Children, Boston. About 40% of the transplant recipients reported having a sunburn since their transplant, only 15% reported daily use of sunscreen, and 53% said they did not recall being told that sunburn could trigger graft-versus-host disease (GVHD).

About one-third of the patients had never seen a dermatologist; of those who had, two-thirds had only seen the dermatologist once, Dr. Sheu reported.

Late skin effects of HSCT are not as well described in children as they are in adults, she said. In adults, late skin effects include vitiligo, psoriasis, nonmelanoma skin cancers, and an increased nevi count.

The children in the study had undergone an HSCT between 1998 and 2013, at a median age of about 7 years (range was 1 month to 19 years). At the time of their skin exams, their mean age was 14 years, and they had been followed for a median of almost 4 years. Nevi were counted on the forearms, backs, legs, palms, and soles.

The median nevi count was 44 nevi, significantly more than the level seen in control subjects. Transplant recipients also had significantly more nevi in sun-exposed areas of the body, as well as on the palms and soles. Transplant recipients were more likely to have atypical nevi and to have nevi greater than 5 mm in diameter.

In addition to fair skin, factors associated with an increase in the overall nevi count included being older than age 10 at the time of the transplant and having total body irradiation, pretransplant chemotherapy, and myeloablative conditioning. Having had a sunburn since the transplant, reported by 40%, was also a risk factor.

Chronic GVHD and chronic GVHD of the skin were associated with the presence of atypical nevi; acute GVHD, the duration of immune suppression, and the use of topical steroids or calcineurin inhibitors were not associated with increased risk of atypical nevi.

She and her coinvestigators are currently analyzing the pathogenesis of these late effects in this population, and autoimmune skin conditions – vitiligo and alopecia – in 25% of the transplant recipients in the study.

In 2013, 1,100 children under aged 16 years in the United States underwent a bone marrow transplant, she noted.

Dr. Sheu had no disclosures.

[email protected]

WASHINGTON – Children who have had a hematopoietic stem cell transplant (HSCT) have an increased risk of benign and atypical nevi, Dr. Johanna Sheu reported at the annual meeting of the American Academy of Dermatology.

These patients need to have routine skin exams and be educated about sun protection needs, she said. Based on her study, these needs are not routinely met.

At least 1 year after undergoing HSCT at Boston Children’s Hospital, 85 posttransplant patients had significantly more nevi and more atypical nevi than did 85 healthy controls who were matched by age, gender, and Fitzpatrick skin type. In addition, 41% of the transplant recipients had at least one actinic keratosis, a basal or squamous cell carcinoma, or a solar lentigo; 11% had at least one nevus spilus.

Moreover, “sun protection … and dermatology follow-up was poor” among the transplant recipients, said Dr. Sheu, of MassGeneral Hospital for Children, Boston. About 40% of the transplant recipients reported having a sunburn since their transplant, only 15% reported daily use of sunscreen, and 53% said they did not recall being told that sunburn could trigger graft-versus-host disease (GVHD).

About one-third of the patients had never seen a dermatologist; of those who had, two-thirds had only seen the dermatologist once, Dr. Sheu reported.

Late skin effects of HSCT are not as well described in children as they are in adults, she said. In adults, late skin effects include vitiligo, psoriasis, nonmelanoma skin cancers, and an increased nevi count.

The children in the study had undergone an HSCT between 1998 and 2013, at a median age of about 7 years (range was 1 month to 19 years). At the time of their skin exams, their mean age was 14 years, and they had been followed for a median of almost 4 years. Nevi were counted on the forearms, backs, legs, palms, and soles.

The median nevi count was 44 nevi, significantly more than the level seen in control subjects. Transplant recipients also had significantly more nevi in sun-exposed areas of the body, as well as on the palms and soles. Transplant recipients were more likely to have atypical nevi and to have nevi greater than 5 mm in diameter.

In addition to fair skin, factors associated with an increase in the overall nevi count included being older than age 10 at the time of the transplant and having total body irradiation, pretransplant chemotherapy, and myeloablative conditioning. Having had a sunburn since the transplant, reported by 40%, was also a risk factor.

Chronic GVHD and chronic GVHD of the skin were associated with the presence of atypical nevi; acute GVHD, the duration of immune suppression, and the use of topical steroids or calcineurin inhibitors were not associated with increased risk of atypical nevi.

She and her coinvestigators are currently analyzing the pathogenesis of these late effects in this population, and autoimmune skin conditions – vitiligo and alopecia – in 25% of the transplant recipients in the study.

In 2013, 1,100 children under aged 16 years in the United States underwent a bone marrow transplant, she noted.

Dr. Sheu had no disclosures.

[email protected]

WASHINGTON – Children who have had a hematopoietic stem cell transplant (HSCT) have an increased risk of benign and atypical nevi, Dr. Johanna Sheu reported at the annual meeting of the American Academy of Dermatology.

These patients need to have routine skin exams and be educated about sun protection needs, she said. Based on her study, these needs are not routinely met.

At least 1 year after undergoing HSCT at Boston Children’s Hospital, 85 posttransplant patients had significantly more nevi and more atypical nevi than did 85 healthy controls who were matched by age, gender, and Fitzpatrick skin type. In addition, 41% of the transplant recipients had at least one actinic keratosis, a basal or squamous cell carcinoma, or a solar lentigo; 11% had at least one nevus spilus.

Moreover, “sun protection … and dermatology follow-up was poor” among the transplant recipients, said Dr. Sheu, of MassGeneral Hospital for Children, Boston. About 40% of the transplant recipients reported having a sunburn since their transplant, only 15% reported daily use of sunscreen, and 53% said they did not recall being told that sunburn could trigger graft-versus-host disease (GVHD).

About one-third of the patients had never seen a dermatologist; of those who had, two-thirds had only seen the dermatologist once, Dr. Sheu reported.

Late skin effects of HSCT are not as well described in children as they are in adults, she said. In adults, late skin effects include vitiligo, psoriasis, nonmelanoma skin cancers, and an increased nevi count.

The children in the study had undergone an HSCT between 1998 and 2013, at a median age of about 7 years (range was 1 month to 19 years). At the time of their skin exams, their mean age was 14 years, and they had been followed for a median of almost 4 years. Nevi were counted on the forearms, backs, legs, palms, and soles.

The median nevi count was 44 nevi, significantly more than the level seen in control subjects. Transplant recipients also had significantly more nevi in sun-exposed areas of the body, as well as on the palms and soles. Transplant recipients were more likely to have atypical nevi and to have nevi greater than 5 mm in diameter.

In addition to fair skin, factors associated with an increase in the overall nevi count included being older than age 10 at the time of the transplant and having total body irradiation, pretransplant chemotherapy, and myeloablative conditioning. Having had a sunburn since the transplant, reported by 40%, was also a risk factor.

Chronic GVHD and chronic GVHD of the skin were associated with the presence of atypical nevi; acute GVHD, the duration of immune suppression, and the use of topical steroids or calcineurin inhibitors were not associated with increased risk of atypical nevi.

She and her coinvestigators are currently analyzing the pathogenesis of these late effects in this population, and autoimmune skin conditions – vitiligo and alopecia – in 25% of the transplant recipients in the study.

In 2013, 1,100 children under aged 16 years in the United States underwent a bone marrow transplant, she noted.

Dr. Sheu had no disclosures.

[email protected]

The broad-spectrum triazole isavuconazole was as effective as voriconazole in patients with suspected invasive mold disease and caused significantly fewer drug-related adverse events, particularly those of the skin, eyes, and hepatobiliary system, a randomized double-blind study of 516 adults has shown.

The findings suggest that the newer agent “could allow safer therapy” for the primary treatment of invasive aspergillosis and other mold disease than standard therapy with voriconazole, researchers for the phase III, industry-sponsored SECURE trial say in a report published in the Lancet.

Wikimedia Commons

The researchers assessed the safety and efficacy of isavuconazole versus voriconazole in patients with invasive mold infection. Patients were recruited from 102 centers across 26 countries over a 7-year period and were randomized to receive either drug.

In the study group of 516 adults with suspected invasive mold infection who received at least one dose of either antifungal drug, isavuconazole proved to be noninferior to voriconazole, by the primary endpoint of all-cause mortality at 6 weeks.

All-cause mortality at 6 weeks in this intention-to-treat group, of whom more than 80% had hematologic malignant disease, was 19% in the isavuconazole group (48 of 258) and 20% (52 of 258) in the voriconazole group.

This primary endpoint was chosen because “it provides the most objective and reproducible effect of therapy, and approximates best the attributable mortality, because deaths due to competing causes occur increasingly after 6 weeks,” Dr. Johan A. Maertensof the UZ Leuven (Belgium), and his associates wrote.

Secondary endpoints included overall response at the end of treatment among patients who were determined by an independent review committee to have proven or probable invasive mold disease – the study’s modified intention-to-treat population – as well as all-cause mortality at day 42 and day 84.

All-cause mortality in this modified intention-to-treat group, as well as in the group of patients found to have proven or probable invasive aspergillosis, specifically, supported the study’s primary findings (Lancet 2016 Feb:387:760-9).

Nearly all patients in the study had at least one treatment-emergent adverse event, and the proportion with serious treatment-emergent adverse events was similar between the treatment groups. However, patients treated with isavuconazole had a significantly lower frequency of hepatobiliary disorders, eye disorders, and skin or subcutaneous disorders.

And overall, significantly fewer patients reported drug-related adverse events with isavuconazole (42% of patients) than with voriconazole (60% of patients). Discontinuation from adverse events, moreover, was significantly less common among isavuconazole-treated patients.

Of the 516 patients in the intention-to-treat group, approximately 53% were confirmed to have proven or probable invasive mold disease, and more than 80% of the mycologically documented cases were Aspergillus infections. Enrollment of patients with possible invasive mold disease at the start “reflects the real-life strategy of early initiation of antifungal treatment,” the investigators say.

Isavuconazonium sulfate was approved in 2015 by the FDA for the treatment of invasive aspergillosis and invasive mucormycosis.

Voriconazole is the current gold standard for the primary treatment of invasive aspergillosis and is recommended for some other mold infections as well, but it is not active against mucormycosis and has “highly variable nonlinear pharmacokinetics in adults,” which has triggered recommendations for drug monitoring, Dr. Maertens and his associates say.

Therapeutic monitoring aimed at individualizing dosage regimes in order to improve response and prevent adverse events became the standard of care in some institutions during the study period (2007-2013). The study used the labeled dose of voriconazole, however, and did not address the efficacy of either drug with therapeutic drug monitoring.

The study also excluded patients with AIDS, abnormal liver or renal function, and those receiving antifungal prophylaxis with a mold-active triazole – factors that may limit generalizability of the findings, the investigators note.

Funding for the study was provided by Astellas Pharma Global Development and Basilea Pharmaceutica International.

Dr. Maertens disclosed receiving grants and fees from Bio-Rad, personal fees and nonfinancial support from Astellas and Basilea, and grants, fees and support from Gilead Sciences, Merck Sharp and Dohme, and Pfizer during the study.

The broad-spectrum triazole isavuconazole was as effective as voriconazole in patients with suspected invasive mold disease and caused significantly fewer drug-related adverse events, particularly those of the skin, eyes, and hepatobiliary system, a randomized double-blind study of 516 adults has shown.

The findings suggest that the newer agent “could allow safer therapy” for the primary treatment of invasive aspergillosis and other mold disease than standard therapy with voriconazole, researchers for the phase III, industry-sponsored SECURE trial say in a report published in the Lancet.

Wikimedia Commons

The researchers assessed the safety and efficacy of isavuconazole versus voriconazole in patients with invasive mold infection. Patients were recruited from 102 centers across 26 countries over a 7-year period and were randomized to receive either drug.

In the study group of 516 adults with suspected invasive mold infection who received at least one dose of either antifungal drug, isavuconazole proved to be noninferior to voriconazole, by the primary endpoint of all-cause mortality at 6 weeks.

All-cause mortality at 6 weeks in this intention-to-treat group, of whom more than 80% had hematologic malignant disease, was 19% in the isavuconazole group (48 of 258) and 20% (52 of 258) in the voriconazole group.

This primary endpoint was chosen because “it provides the most objective and reproducible effect of therapy, and approximates best the attributable mortality, because deaths due to competing causes occur increasingly after 6 weeks,” Dr. Johan A. Maertensof the UZ Leuven (Belgium), and his associates wrote.

Secondary endpoints included overall response at the end of treatment among patients who were determined by an independent review committee to have proven or probable invasive mold disease – the study’s modified intention-to-treat population – as well as all-cause mortality at day 42 and day 84.

All-cause mortality in this modified intention-to-treat group, as well as in the group of patients found to have proven or probable invasive aspergillosis, specifically, supported the study’s primary findings (Lancet 2016 Feb:387:760-9).

Nearly all patients in the study had at least one treatment-emergent adverse event, and the proportion with serious treatment-emergent adverse events was similar between the treatment groups. However, patients treated with isavuconazole had a significantly lower frequency of hepatobiliary disorders, eye disorders, and skin or subcutaneous disorders.

And overall, significantly fewer patients reported drug-related adverse events with isavuconazole (42% of patients) than with voriconazole (60% of patients). Discontinuation from adverse events, moreover, was significantly less common among isavuconazole-treated patients.

Of the 516 patients in the intention-to-treat group, approximately 53% were confirmed to have proven or probable invasive mold disease, and more than 80% of the mycologically documented cases were Aspergillus infections. Enrollment of patients with possible invasive mold disease at the start “reflects the real-life strategy of early initiation of antifungal treatment,” the investigators say.

Isavuconazonium sulfate was approved in 2015 by the FDA for the treatment of invasive aspergillosis and invasive mucormycosis.

Voriconazole is the current gold standard for the primary treatment of invasive aspergillosis and is recommended for some other mold infections as well, but it is not active against mucormycosis and has “highly variable nonlinear pharmacokinetics in adults,” which has triggered recommendations for drug monitoring, Dr. Maertens and his associates say.

Therapeutic monitoring aimed at individualizing dosage regimes in order to improve response and prevent adverse events became the standard of care in some institutions during the study period (2007-2013). The study used the labeled dose of voriconazole, however, and did not address the efficacy of either drug with therapeutic drug monitoring.

The study also excluded patients with AIDS, abnormal liver or renal function, and those receiving antifungal prophylaxis with a mold-active triazole – factors that may limit generalizability of the findings, the investigators note.

Funding for the study was provided by Astellas Pharma Global Development and Basilea Pharmaceutica International.

Dr. Maertens disclosed receiving grants and fees from Bio-Rad, personal fees and nonfinancial support from Astellas and Basilea, and grants, fees and support from Gilead Sciences, Merck Sharp and Dohme, and Pfizer during the study.

The broad-spectrum triazole isavuconazole was as effective as voriconazole in patients with suspected invasive mold disease and caused significantly fewer drug-related adverse events, particularly those of the skin, eyes, and hepatobiliary system, a randomized double-blind study of 516 adults has shown.

The findings suggest that the newer agent “could allow safer therapy” for the primary treatment of invasive aspergillosis and other mold disease than standard therapy with voriconazole, researchers for the phase III, industry-sponsored SECURE trial say in a report published in the Lancet.

Wikimedia Commons

The researchers assessed the safety and efficacy of isavuconazole versus voriconazole in patients with invasive mold infection. Patients were recruited from 102 centers across 26 countries over a 7-year period and were randomized to receive either drug.

In the study group of 516 adults with suspected invasive mold infection who received at least one dose of either antifungal drug, isavuconazole proved to be noninferior to voriconazole, by the primary endpoint of all-cause mortality at 6 weeks.

All-cause mortality at 6 weeks in this intention-to-treat group, of whom more than 80% had hematologic malignant disease, was 19% in the isavuconazole group (48 of 258) and 20% (52 of 258) in the voriconazole group.

This primary endpoint was chosen because “it provides the most objective and reproducible effect of therapy, and approximates best the attributable mortality, because deaths due to competing causes occur increasingly after 6 weeks,” Dr. Johan A. Maertensof the UZ Leuven (Belgium), and his associates wrote.

Secondary endpoints included overall response at the end of treatment among patients who were determined by an independent review committee to have proven or probable invasive mold disease – the study’s modified intention-to-treat population – as well as all-cause mortality at day 42 and day 84.

All-cause mortality in this modified intention-to-treat group, as well as in the group of patients found to have proven or probable invasive aspergillosis, specifically, supported the study’s primary findings (Lancet 2016 Feb:387:760-9).

Nearly all patients in the study had at least one treatment-emergent adverse event, and the proportion with serious treatment-emergent adverse events was similar between the treatment groups. However, patients treated with isavuconazole had a significantly lower frequency of hepatobiliary disorders, eye disorders, and skin or subcutaneous disorders.

And overall, significantly fewer patients reported drug-related adverse events with isavuconazole (42% of patients) than with voriconazole (60% of patients). Discontinuation from adverse events, moreover, was significantly less common among isavuconazole-treated patients.

Of the 516 patients in the intention-to-treat group, approximately 53% were confirmed to have proven or probable invasive mold disease, and more than 80% of the mycologically documented cases were Aspergillus infections. Enrollment of patients with possible invasive mold disease at the start “reflects the real-life strategy of early initiation of antifungal treatment,” the investigators say.

Isavuconazonium sulfate was approved in 2015 by the FDA for the treatment of invasive aspergillosis and invasive mucormycosis.

Voriconazole is the current gold standard for the primary treatment of invasive aspergillosis and is recommended for some other mold infections as well, but it is not active against mucormycosis and has “highly variable nonlinear pharmacokinetics in adults,” which has triggered recommendations for drug monitoring, Dr. Maertens and his associates say.

Therapeutic monitoring aimed at individualizing dosage regimes in order to improve response and prevent adverse events became the standard of care in some institutions during the study period (2007-2013). The study used the labeled dose of voriconazole, however, and did not address the efficacy of either drug with therapeutic drug monitoring.

The study also excluded patients with AIDS, abnormal liver or renal function, and those receiving antifungal prophylaxis with a mold-active triazole – factors that may limit generalizability of the findings, the investigators note.

Funding for the study was provided by Astellas Pharma Global Development and Basilea Pharmaceutica International.

Dr. Maertens disclosed receiving grants and fees from Bio-Rad, personal fees and nonfinancial support from Astellas and Basilea, and grants, fees and support from Gilead Sciences, Merck Sharp and Dohme, and Pfizer during the study.

Peripheral blood is a major stem cell source for hematopoietic stem cell transplantation in many parts of the world – even though bone marrow is preferred – likely due to costs, the need for patient hospitalization, and a lack of trained physicians and necessary equipment for performing bone marrow transplant, Dr. Ayami Yoshimi, and colleagues reported for the Worldwide Network of Blood and Marrow Transplantation.

Peripheral blood stem cells are readily available at transplant centers, as they are collected routinely for other indications, and they offer short-term cost savings due to rapid engraftment, the network reported in a research letter (JAMA. 2016;315[2]:198-200. doi:10.1001/jama.2015.13706).

In patients with nonmalignant disorders, use of peripheral blood stem cells in HSCT has a higher rate of graft-vs.-host disease and lower survival rates.

In the network’s retrospective survey, which they estimate covered 90% of transplants performed in 2009 and 2010, 114,217 HSCTs were reported by 1,482 transplant teams and 3,282 allogeneic HSCTs were performed for bone marrow failure. Use of peripheral blood stem cells in HSCT varied from 80% in countries with low and middle incomes to 50% in those with high-middle incomes to 36% in those with high incomes (P less than .001). For the 3,282 allogeneic HSCTs performed for bone marrow failure worldwide, stem cell sources included bone marrow (1,766, 54%), peripheral blood stem cells (1,336, 41%), and cord blood (180, 5%).

Use of unrelated donors was highest in Europe (515/1107; 47%); use of matched sibling donors was highest in the Eastern Mediterranean region and Africa (249/274; 91%).

Bone marrow was used most commonly in the Americas (631/843; 75%) and in Europe (632/1057; 60%), but not in the Eastern Mediterranean region and Africa (123/266; 46%) and in the Asia Pacific region (380/936; 41%; excluding Japan, 19%).

“National and international transplant organizations and authorities should foster regional accredited bone marrow harvest centers for patients with nonmalignant disorders and provide resources to establish such infrastructures. Unrelated donor registries should provide information on the necessity of bone marrow donation for patients with bone marrow failure,” wrote Dr. Yoshimi of the University of Freiburg, Germany, and colleagues.

Funding for the study was indirectly provided by the Worldwide Network of Blood and Marrow Transplantation. Dr. Yoshimi reported having no disclosures.

Peripheral blood is a major stem cell source for hematopoietic stem cell transplantation in many parts of the world – even though bone marrow is preferred – likely due to costs, the need for patient hospitalization, and a lack of trained physicians and necessary equipment for performing bone marrow transplant, Dr. Ayami Yoshimi, and colleagues reported for the Worldwide Network of Blood and Marrow Transplantation.

Peripheral blood stem cells are readily available at transplant centers, as they are collected routinely for other indications, and they offer short-term cost savings due to rapid engraftment, the network reported in a research letter (JAMA. 2016;315[2]:198-200. doi:10.1001/jama.2015.13706).

In patients with nonmalignant disorders, use of peripheral blood stem cells in HSCT has a higher rate of graft-vs.-host disease and lower survival rates.

In the network’s retrospective survey, which they estimate covered 90% of transplants performed in 2009 and 2010, 114,217 HSCTs were reported by 1,482 transplant teams and 3,282 allogeneic HSCTs were performed for bone marrow failure. Use of peripheral blood stem cells in HSCT varied from 80% in countries with low and middle incomes to 50% in those with high-middle incomes to 36% in those with high incomes (P less than .001). For the 3,282 allogeneic HSCTs performed for bone marrow failure worldwide, stem cell sources included bone marrow (1,766, 54%), peripheral blood stem cells (1,336, 41%), and cord blood (180, 5%).

Use of unrelated donors was highest in Europe (515/1107; 47%); use of matched sibling donors was highest in the Eastern Mediterranean region and Africa (249/274; 91%).

Bone marrow was used most commonly in the Americas (631/843; 75%) and in Europe (632/1057; 60%), but not in the Eastern Mediterranean region and Africa (123/266; 46%) and in the Asia Pacific region (380/936; 41%; excluding Japan, 19%).

“National and international transplant organizations and authorities should foster regional accredited bone marrow harvest centers for patients with nonmalignant disorders and provide resources to establish such infrastructures. Unrelated donor registries should provide information on the necessity of bone marrow donation for patients with bone marrow failure,” wrote Dr. Yoshimi of the University of Freiburg, Germany, and colleagues.

Funding for the study was indirectly provided by the Worldwide Network of Blood and Marrow Transplantation. Dr. Yoshimi reported having no disclosures.

Peripheral blood is a major stem cell source for hematopoietic stem cell transplantation in many parts of the world – even though bone marrow is preferred – likely due to costs, the need for patient hospitalization, and a lack of trained physicians and necessary equipment for performing bone marrow transplant, Dr. Ayami Yoshimi, and colleagues reported for the Worldwide Network of Blood and Marrow Transplantation.

Peripheral blood stem cells are readily available at transplant centers, as they are collected routinely for other indications, and they offer short-term cost savings due to rapid engraftment, the network reported in a research letter (JAMA. 2016;315[2]:198-200. doi:10.1001/jama.2015.13706).

In patients with nonmalignant disorders, use of peripheral blood stem cells in HSCT has a higher rate of graft-vs.-host disease and lower survival rates.

In the network’s retrospective survey, which they estimate covered 90% of transplants performed in 2009 and 2010, 114,217 HSCTs were reported by 1,482 transplant teams and 3,282 allogeneic HSCTs were performed for bone marrow failure. Use of peripheral blood stem cells in HSCT varied from 80% in countries with low and middle incomes to 50% in those with high-middle incomes to 36% in those with high incomes (P less than .001). For the 3,282 allogeneic HSCTs performed for bone marrow failure worldwide, stem cell sources included bone marrow (1,766, 54%), peripheral blood stem cells (1,336, 41%), and cord blood (180, 5%).

Use of unrelated donors was highest in Europe (515/1107; 47%); use of matched sibling donors was highest in the Eastern Mediterranean region and Africa (249/274; 91%).

Bone marrow was used most commonly in the Americas (631/843; 75%) and in Europe (632/1057; 60%), but not in the Eastern Mediterranean region and Africa (123/266; 46%) and in the Asia Pacific region (380/936; 41%; excluding Japan, 19%).

“National and international transplant organizations and authorities should foster regional accredited bone marrow harvest centers for patients with nonmalignant disorders and provide resources to establish such infrastructures. Unrelated donor registries should provide information on the necessity of bone marrow donation for patients with bone marrow failure,” wrote Dr. Yoshimi of the University of Freiburg, Germany, and colleagues.

Funding for the study was indirectly provided by the Worldwide Network of Blood and Marrow Transplantation. Dr. Yoshimi reported having no disclosures.

Medicare will cover allogeneic hematopoietic stem cell transplantation (HSCT) for beneficiaries with multiple myeloma, myelofibrosis, or sickle cell disease in the context of approved, prospective clinical trials, the Centers for Medicare & Medicaid Services announced in a final decision memo Jan. 27.

Approvable studies must examine whether Medicare beneficiaries who receive allogeneic HSCT have improved outcomes, compared with patients who do not receive allogeneic HSCT as measured by graft vs. host disease, other transplant-related adverse events, overall survival, and, optionally, quality of life measures.

In multiple myeloma, allogeneic HSCT will be covered only for Medicare beneficiaries who have Durie-Salmon Stage II or III multiple myeloma, or International Staging System (ISS) Stage II or Stage III multiple myeloma, and are participating in an approved prospective clinical study. Such studies must control for selection bias and potential confounding by age, duration of diagnosis, disease classification, International Myeloma Working Group (IMWG) classification, ISS staging, Durie-Salmon staging, comorbid conditions, type of preparative/conditioning regimen, graft vs. host disease (GVHD) prophylaxis, donor type, and cell source, the CMS said in its memo.

In myelofibrosis, allogeneic HSCT will be covered by Medicare in an approved prospective study only for beneficiaries with Dynamic International Prognostic Scoring System (DIPSS plus) intermediate-2 or high primary or secondary myelofibrosis. Studies must be controlled for selection bias and potential confounding by age, duration of diagnosis, disease classification, DIPSS plus score, comorbid conditions, type of preparative/conditioning regimen, GVHD prophylaxis, donor type, and cell source.

In sickle cell disease, allogeneic HSCT will be covered by Medicare only for beneficiaries who have severe, symptomatic disease. Approvable studies must control for selection bias and potential confounding by age, duration of diagnosis, comorbid conditions, type of preparative/conditioning regimen, GVHD prophylaxis, donor type, and cell source.

[email protected]

On Twitter @maryjodales

Medicare will cover allogeneic hematopoietic stem cell transplantation (HSCT) for beneficiaries with multiple myeloma, myelofibrosis, or sickle cell disease in the context of approved, prospective clinical trials, the Centers for Medicare & Medicaid Services announced in a final decision memo Jan. 27.

Approvable studies must examine whether Medicare beneficiaries who receive allogeneic HSCT have improved outcomes, compared with patients who do not receive allogeneic HSCT as measured by graft vs. host disease, other transplant-related adverse events, overall survival, and, optionally, quality of life measures.

In multiple myeloma, allogeneic HSCT will be covered only for Medicare beneficiaries who have Durie-Salmon Stage II or III multiple myeloma, or International Staging System (ISS) Stage II or Stage III multiple myeloma, and are participating in an approved prospective clinical study. Such studies must control for selection bias and potential confounding by age, duration of diagnosis, disease classification, International Myeloma Working Group (IMWG) classification, ISS staging, Durie-Salmon staging, comorbid conditions, type of preparative/conditioning regimen, graft vs. host disease (GVHD) prophylaxis, donor type, and cell source, the CMS said in its memo.

In myelofibrosis, allogeneic HSCT will be covered by Medicare in an approved prospective study only for beneficiaries with Dynamic International Prognostic Scoring System (DIPSS plus) intermediate-2 or high primary or secondary myelofibrosis. Studies must be controlled for selection bias and potential confounding by age, duration of diagnosis, disease classification, DIPSS plus score, comorbid conditions, type of preparative/conditioning regimen, GVHD prophylaxis, donor type, and cell source.

In sickle cell disease, allogeneic HSCT will be covered by Medicare only for beneficiaries who have severe, symptomatic disease. Approvable studies must control for selection bias and potential confounding by age, duration of diagnosis, comorbid conditions, type of preparative/conditioning regimen, GVHD prophylaxis, donor type, and cell source.

[email protected]

On Twitter @maryjodales

Medicare will cover allogeneic hematopoietic stem cell transplantation (HSCT) for beneficiaries with multiple myeloma, myelofibrosis, or sickle cell disease in the context of approved, prospective clinical trials, the Centers for Medicare & Medicaid Services announced in a final decision memo Jan. 27.

Approvable studies must examine whether Medicare beneficiaries who receive allogeneic HSCT have improved outcomes, compared with patients who do not receive allogeneic HSCT as measured by graft vs. host disease, other transplant-related adverse events, overall survival, and, optionally, quality of life measures.

In multiple myeloma, allogeneic HSCT will be covered only for Medicare beneficiaries who have Durie-Salmon Stage II or III multiple myeloma, or International Staging System (ISS) Stage II or Stage III multiple myeloma, and are participating in an approved prospective clinical study. Such studies must control for selection bias and potential confounding by age, duration of diagnosis, disease classification, International Myeloma Working Group (IMWG) classification, ISS staging, Durie-Salmon staging, comorbid conditions, type of preparative/conditioning regimen, graft vs. host disease (GVHD) prophylaxis, donor type, and cell source, the CMS said in its memo.

In myelofibrosis, allogeneic HSCT will be covered by Medicare in an approved prospective study only for beneficiaries with Dynamic International Prognostic Scoring System (DIPSS plus) intermediate-2 or high primary or secondary myelofibrosis. Studies must be controlled for selection bias and potential confounding by age, duration of diagnosis, disease classification, DIPSS plus score, comorbid conditions, type of preparative/conditioning regimen, GVHD prophylaxis, donor type, and cell source.

In sickle cell disease, allogeneic HSCT will be covered by Medicare only for beneficiaries who have severe, symptomatic disease. Approvable studies must control for selection bias and potential confounding by age, duration of diagnosis, comorbid conditions, type of preparative/conditioning regimen, GVHD prophylaxis, donor type, and cell source.

[email protected]

On Twitter @maryjodales

In patients with B-cell malignancies who did not obtain remissions after allogeneic hematopoietic stem-cell transplantation (alloHSCT), infusion of anti-CD19 chimeric antigen receptor (CAR19) T-cells induced remissions without causing graft-versus-host disease (GVHD).

Of 20 patients treated, 6 obtained complete remission and 2 obtained partial remissions, while none of the patients experienced new-onset acute GVHD.

“The increased antimalignancy potency of CAR19 T-cells allowed small doses of T-cells to eradicate malignancy without causing GVHD; therefore, this work demonstrates a solution to the central problem of alloHSCT, the separation of [graft-versus-malignancy] from GVHD,” wrote Dr. Jennifer Brudno of the National Cancer Institute, Bethesda, Md., and colleagues (J Clin Onc. 2016 Jan. 25. doi: 10.1200/JCO.2015.64.5929).

In general, CAR19 T-cells did not persist longer than 4 weeks, the median time it takes for GVHD to develop after donor lymphocyte infusion, which may be a factor in avoiding GVHD. Smaller doses may be another contributing factor: CAR19 T-cell doses administered in the trial ranged from 106/kg to 107/kg, which is 10-fold smaller than typical donor lymphocyte infusions.

In contrast to previous CAR T-cell studies, patients did not receive chemotherapy before CAR19 T-cell infusion, so endogenous T-cells and natural killer cells were not depleted. Evidence indicates that lymphocyte depletion enhances antitumor activity of adoptively transferred T-cells, but the current results indicate that prior lymphocyte depletion is not an absolute requirement.

The CAR19 T-cell infusion was especially effective in acute lymphoblastic leukemia (ALL), with four of the five ALL patients obtaining complete remission. Patients with chronic lymphocyte leukemia and lymphoma also obtained remissions.

Toxicities observed were consistent with previous CAR T-cell studies and included fever, tachycardia, and hypotension, indicative of cytokine release syndrome.

Peak levels of CAR19 T-cells were significantly higher in patients with complete or partial responses, and patients who did not obtain a complete or partial response were more likely to have undetectable or very low levels. Increasing peak blood levels of CAR19 T-cells in vivo is an important goal for future research, according to investigators. Since endogenous CD19+ cells may promote proliferation of CAR19 T- cells, CD19+ cellular vaccines might enhance CAR19 T-cell proliferation in patients with low levels, they suggested.

Administration of programmed cell death protein-1 (PD-1) antagonists may also offer improvements. High levels of PD-1 expression on CAR19 T-cells were observed at the time of peak blood CAR19 T-cell levels.

Dr. Brudno reported having no disclosures. Dr. Goy and Dr. Rosenberg reported ties to industry, and Dr. Kochenderfer reported patents pending on CAR T-cell therapy.

In patients with B-cell malignancies who did not obtain remissions after allogeneic hematopoietic stem-cell transplantation (alloHSCT), infusion of anti-CD19 chimeric antigen receptor (CAR19) T-cells induced remissions without causing graft-versus-host disease (GVHD).

Of 20 patients treated, 6 obtained complete remission and 2 obtained partial remissions, while none of the patients experienced new-onset acute GVHD.

“The increased antimalignancy potency of CAR19 T-cells allowed small doses of T-cells to eradicate malignancy without causing GVHD; therefore, this work demonstrates a solution to the central problem of alloHSCT, the separation of [graft-versus-malignancy] from GVHD,” wrote Dr. Jennifer Brudno of the National Cancer Institute, Bethesda, Md., and colleagues (J Clin Onc. 2016 Jan. 25. doi: 10.1200/JCO.2015.64.5929).

In general, CAR19 T-cells did not persist longer than 4 weeks, the median time it takes for GVHD to develop after donor lymphocyte infusion, which may be a factor in avoiding GVHD. Smaller doses may be another contributing factor: CAR19 T-cell doses administered in the trial ranged from 106/kg to 107/kg, which is 10-fold smaller than typical donor lymphocyte infusions.

In contrast to previous CAR T-cell studies, patients did not receive chemotherapy before CAR19 T-cell infusion, so endogenous T-cells and natural killer cells were not depleted. Evidence indicates that lymphocyte depletion enhances antitumor activity of adoptively transferred T-cells, but the current results indicate that prior lymphocyte depletion is not an absolute requirement.

The CAR19 T-cell infusion was especially effective in acute lymphoblastic leukemia (ALL), with four of the five ALL patients obtaining complete remission. Patients with chronic lymphocyte leukemia and lymphoma also obtained remissions.

Toxicities observed were consistent with previous CAR T-cell studies and included fever, tachycardia, and hypotension, indicative of cytokine release syndrome.

Peak levels of CAR19 T-cells were significantly higher in patients with complete or partial responses, and patients who did not obtain a complete or partial response were more likely to have undetectable or very low levels. Increasing peak blood levels of CAR19 T-cells in vivo is an important goal for future research, according to investigators. Since endogenous CD19+ cells may promote proliferation of CAR19 T- cells, CD19+ cellular vaccines might enhance CAR19 T-cell proliferation in patients with low levels, they suggested.

Administration of programmed cell death protein-1 (PD-1) antagonists may also offer improvements. High levels of PD-1 expression on CAR19 T-cells were observed at the time of peak blood CAR19 T-cell levels.

Dr. Brudno reported having no disclosures. Dr. Goy and Dr. Rosenberg reported ties to industry, and Dr. Kochenderfer reported patents pending on CAR T-cell therapy.

In patients with B-cell malignancies who did not obtain remissions after allogeneic hematopoietic stem-cell transplantation (alloHSCT), infusion of anti-CD19 chimeric antigen receptor (CAR19) T-cells induced remissions without causing graft-versus-host disease (GVHD).

Of 20 patients treated, 6 obtained complete remission and 2 obtained partial remissions, while none of the patients experienced new-onset acute GVHD.

“The increased antimalignancy potency of CAR19 T-cells allowed small doses of T-cells to eradicate malignancy without causing GVHD; therefore, this work demonstrates a solution to the central problem of alloHSCT, the separation of [graft-versus-malignancy] from GVHD,” wrote Dr. Jennifer Brudno of the National Cancer Institute, Bethesda, Md., and colleagues (J Clin Onc. 2016 Jan. 25. doi: 10.1200/JCO.2015.64.5929).

In general, CAR19 T-cells did not persist longer than 4 weeks, the median time it takes for GVHD to develop after donor lymphocyte infusion, which may be a factor in avoiding GVHD. Smaller doses may be another contributing factor: CAR19 T-cell doses administered in the trial ranged from 106/kg to 107/kg, which is 10-fold smaller than typical donor lymphocyte infusions.

In contrast to previous CAR T-cell studies, patients did not receive chemotherapy before CAR19 T-cell infusion, so endogenous T-cells and natural killer cells were not depleted. Evidence indicates that lymphocyte depletion enhances antitumor activity of adoptively transferred T-cells, but the current results indicate that prior lymphocyte depletion is not an absolute requirement.

The CAR19 T-cell infusion was especially effective in acute lymphoblastic leukemia (ALL), with four of the five ALL patients obtaining complete remission. Patients with chronic lymphocyte leukemia and lymphoma also obtained remissions.

Toxicities observed were consistent with previous CAR T-cell studies and included fever, tachycardia, and hypotension, indicative of cytokine release syndrome.

Peak levels of CAR19 T-cells were significantly higher in patients with complete or partial responses, and patients who did not obtain a complete or partial response were more likely to have undetectable or very low levels. Increasing peak blood levels of CAR19 T-cells in vivo is an important goal for future research, according to investigators. Since endogenous CD19+ cells may promote proliferation of CAR19 T- cells, CD19+ cellular vaccines might enhance CAR19 T-cell proliferation in patients with low levels, they suggested.

Administration of programmed cell death protein-1 (PD-1) antagonists may also offer improvements. High levels of PD-1 expression on CAR19 T-cells were observed at the time of peak blood CAR19 T-cell levels.

Dr. Brudno reported having no disclosures. Dr. Goy and Dr. Rosenberg reported ties to industry, and Dr. Kochenderfer reported patents pending on CAR T-cell therapy.

ORLANDO – Stored red blood cells kept for longer than a few weeks do not impair outcomes or harm the patients who receive them, Dr. Christine Cserti-Gazdewich reported at the annual meeting of the American Society of Hematology.

In a randomized clinical trial conducted in Kanpala, Uganda, where severe anemia with lactic acidosis is common, children who received RBCs that had been stored from 25-35 days had outcomes that were not inferior to those of children who received RBCs delivered within 10 days of collection. The findings have significant, positive implications for countries and geographic regions where there are chronic shortages of blood products, said Dr. Cserti-Gazdewich, of Toronto General Hospital.

ORLANDO – Stored red blood cells kept for longer than a few weeks do not impair outcomes or harm the patients who receive them, Dr. Christine Cserti-Gazdewich reported at the annual meeting of the American Society of Hematology.

In a randomized clinical trial conducted in Kanpala, Uganda, where severe anemia with lactic acidosis is common, children who received RBCs that had been stored from 25-35 days had outcomes that were not inferior to those of children who received RBCs delivered within 10 days of collection. The findings have significant, positive implications for countries and geographic regions where there are chronic shortages of blood products, said Dr. Cserti-Gazdewich, of Toronto General Hospital.

ORLANDO – Stored red blood cells kept for longer than a few weeks do not impair outcomes or harm the patients who receive them, Dr. Christine Cserti-Gazdewich reported at the annual meeting of the American Society of Hematology.

In a randomized clinical trial conducted in Kanpala, Uganda, where severe anemia with lactic acidosis is common, children who received RBCs that had been stored from 25-35 days had outcomes that were not inferior to those of children who received RBCs delivered within 10 days of collection. The findings have significant, positive implications for countries and geographic regions where there are chronic shortages of blood products, said Dr. Cserti-Gazdewich, of Toronto General Hospital.

ORLANDO – Genetic modification of autologous stem cells provided sustained clinical benefit with good safety for children with the rare immunodeficiency disorder Wiskott-Aldrich syndrome, an international team of investigators report.

Six of eight children who received infusions of autologous stem cells that had been modified with a lentiviral vector to restore normal expression of the WAS gene had marked reductions in severe infections, fewer hospitalizations, improved hematologic parameters, and more robust immune responses than they had prior to transplant, reported Dr. Francesca Ferrua from the San Raffaele Telethon Institute for Gene Therapy in Milan, Italy.

“Importantly, with regards to safety we did not detect any serious adverse events related to gene therapy in follow up, and we did not observe any evidence of abnormal clonal proliferation after gene therapy,” she said at the American Society of Hematology annual meeting here.

The Wiskott-Aldrich syndrome is an x-linked syndrome caused by mutations in the WAS gene encoding for the WAS protein (WASP), which is involved in regulation of the cytoskeleton. The disorder, which primarily affects males, leads to immunodeficiency, microthrombocytopenia and leukocyte abnormalities. Patients develop severe eczema and other inflammatory disorders, and are at increased risk for autoimmune diseases and malignancies.

The syndrome is estimated to occur in 1-10 per 1 million males worldwide, according to The National Library of Medicine.

Allogeneic hematopoietic stem cell transplantion (HSCT) can be curative for patients with Wiskott-Aldrich syndrome, but the technique is associated with both acute transplant-related complications and long-term morbidities, particularly when there is not a perfect match between donor and recipient, Dr. Ferrua explained.Prior studies using a gamma-retroviral vector under the control of a strong viral promoter showed that gene therapy was feasible in these patients and could result in immunological improvement. The earlier attempts, however, were associated with a high risk of genotoxicity and insertional mutagenesis; seven of nine patients treated in one study developed leukemia.

In their current line of research, Dr. Ferrua and colleagues had previously reported on the use of autologous hematopoietic stem/progenitor cells modified ex vivo to correct the inherent defect in three patients with severe mutations in WAS who had no suitable stem-cell donors.

The researchers collected CD34-positive cells from each patient’s bone marrow and/or mobilized peripheral blood and transduced the cells in the laboratory with a lentivirus modified to promote normal expression of WAS. They then returned the cells to the patients after they underwent a reduced-intensity conditioning regimen using an anti-CD20 monoclonal antibody, busulfan, and fludarabine.

Long-term follow-up

At ASH 2015, Dr. Ferrua reported results on the first 8 patients treated as of October 2015. The patients were treated at a median age of 2.2 years; all are alive after a median of 3.3 years of follow up, with the longest follow up being 5.5 years

All had marked reductions in the annualized estimated rate of severe infections compared with the pre-transplant period.

Of the seven patients followed for more than 1 year, all were able to discontinue prophylaxis for infections, at a median of 13-15 months after gene therapy, and five were able to discontinue immunoglobulin supplementation.

Additionally, four of four patients had evidence of a normal immune response based on the development of specific antibodies after vaccination.

Four patients had resolution of their eczemas, and the other two with eczema had only mild cases.

At a median of 4 months after genetic therapy, none of the patients required platelet transfusions. Out to at least 1 year, there was no evidence of autoimmunity.

Among all patients, there were reductions in the frequency or severity of bleeding, no severe bleeding episodes, no hospitalizations for bleeding and a reduction in the number of hospitalizations for infections.

There were no serious adverse events related to the transplant.

The study was sponsored by IRCCS San Raffaele with support from the Fondazione Telethon and GlaxoSmithKline. Dr. Ferrua reported having no conflicts of interest.

ORLANDO – Genetic modification of autologous stem cells provided sustained clinical benefit with good safety for children with the rare immunodeficiency disorder Wiskott-Aldrich syndrome, an international team of investigators report.

Six of eight children who received infusions of autologous stem cells that had been modified with a lentiviral vector to restore normal expression of the WAS gene had marked reductions in severe infections, fewer hospitalizations, improved hematologic parameters, and more robust immune responses than they had prior to transplant, reported Dr. Francesca Ferrua from the San Raffaele Telethon Institute for Gene Therapy in Milan, Italy.

“Importantly, with regards to safety we did not detect any serious adverse events related to gene therapy in follow up, and we did not observe any evidence of abnormal clonal proliferation after gene therapy,” she said at the American Society of Hematology annual meeting here.

The Wiskott-Aldrich syndrome is an x-linked syndrome caused by mutations in the WAS gene encoding for the WAS protein (WASP), which is involved in regulation of the cytoskeleton. The disorder, which primarily affects males, leads to immunodeficiency, microthrombocytopenia and leukocyte abnormalities. Patients develop severe eczema and other inflammatory disorders, and are at increased risk for autoimmune diseases and malignancies.

The syndrome is estimated to occur in 1-10 per 1 million males worldwide, according to The National Library of Medicine.

Allogeneic hematopoietic stem cell transplantion (HSCT) can be curative for patients with Wiskott-Aldrich syndrome, but the technique is associated with both acute transplant-related complications and long-term morbidities, particularly when there is not a perfect match between donor and recipient, Dr. Ferrua explained.Prior studies using a gamma-retroviral vector under the control of a strong viral promoter showed that gene therapy was feasible in these patients and could result in immunological improvement. The earlier attempts, however, were associated with a high risk of genotoxicity and insertional mutagenesis; seven of nine patients treated in one study developed leukemia.

In their current line of research, Dr. Ferrua and colleagues had previously reported on the use of autologous hematopoietic stem/progenitor cells modified ex vivo to correct the inherent defect in three patients with severe mutations in WAS who had no suitable stem-cell donors.

The researchers collected CD34-positive cells from each patient’s bone marrow and/or mobilized peripheral blood and transduced the cells in the laboratory with a lentivirus modified to promote normal expression of WAS. They then returned the cells to the patients after they underwent a reduced-intensity conditioning regimen using an anti-CD20 monoclonal antibody, busulfan, and fludarabine.

Long-term follow-up

At ASH 2015, Dr. Ferrua reported results on the first 8 patients treated as of October 2015. The patients were treated at a median age of 2.2 years; all are alive after a median of 3.3 years of follow up, with the longest follow up being 5.5 years

All had marked reductions in the annualized estimated rate of severe infections compared with the pre-transplant period.

Of the seven patients followed for more than 1 year, all were able to discontinue prophylaxis for infections, at a median of 13-15 months after gene therapy, and five were able to discontinue immunoglobulin supplementation.

Additionally, four of four patients had evidence of a normal immune response based on the development of specific antibodies after vaccination.

Four patients had resolution of their eczemas, and the other two with eczema had only mild cases.

At a median of 4 months after genetic therapy, none of the patients required platelet transfusions. Out to at least 1 year, there was no evidence of autoimmunity.

Among all patients, there were reductions in the frequency or severity of bleeding, no severe bleeding episodes, no hospitalizations for bleeding and a reduction in the number of hospitalizations for infections.

There were no serious adverse events related to the transplant.

The study was sponsored by IRCCS San Raffaele with support from the Fondazione Telethon and GlaxoSmithKline. Dr. Ferrua reported having no conflicts of interest.

ORLANDO – Genetic modification of autologous stem cells provided sustained clinical benefit with good safety for children with the rare immunodeficiency disorder Wiskott-Aldrich syndrome, an international team of investigators report.

Six of eight children who received infusions of autologous stem cells that had been modified with a lentiviral vector to restore normal expression of the WAS gene had marked reductions in severe infections, fewer hospitalizations, improved hematologic parameters, and more robust immune responses than they had prior to transplant, reported Dr. Francesca Ferrua from the San Raffaele Telethon Institute for Gene Therapy in Milan, Italy.

“Importantly, with regards to safety we did not detect any serious adverse events related to gene therapy in follow up, and we did not observe any evidence of abnormal clonal proliferation after gene therapy,” she said at the American Society of Hematology annual meeting here.

The Wiskott-Aldrich syndrome is an x-linked syndrome caused by mutations in the WAS gene encoding for the WAS protein (WASP), which is involved in regulation of the cytoskeleton. The disorder, which primarily affects males, leads to immunodeficiency, microthrombocytopenia and leukocyte abnormalities. Patients develop severe eczema and other inflammatory disorders, and are at increased risk for autoimmune diseases and malignancies.

The syndrome is estimated to occur in 1-10 per 1 million males worldwide, according to The National Library of Medicine.

Allogeneic hematopoietic stem cell transplantion (HSCT) can be curative for patients with Wiskott-Aldrich syndrome, but the technique is associated with both acute transplant-related complications and long-term morbidities, particularly when there is not a perfect match between donor and recipient, Dr. Ferrua explained.Prior studies using a gamma-retroviral vector under the control of a strong viral promoter showed that gene therapy was feasible in these patients and could result in immunological improvement. The earlier attempts, however, were associated with a high risk of genotoxicity and insertional mutagenesis; seven of nine patients treated in one study developed leukemia.

In their current line of research, Dr. Ferrua and colleagues had previously reported on the use of autologous hematopoietic stem/progenitor cells modified ex vivo to correct the inherent defect in three patients with severe mutations in WAS who had no suitable stem-cell donors.

The researchers collected CD34-positive cells from each patient’s bone marrow and/or mobilized peripheral blood and transduced the cells in the laboratory with a lentivirus modified to promote normal expression of WAS. They then returned the cells to the patients after they underwent a reduced-intensity conditioning regimen using an anti-CD20 monoclonal antibody, busulfan, and fludarabine.

Long-term follow-up

At ASH 2015, Dr. Ferrua reported results on the first 8 patients treated as of October 2015. The patients were treated at a median age of 2.2 years; all are alive after a median of 3.3 years of follow up, with the longest follow up being 5.5 years

All had marked reductions in the annualized estimated rate of severe infections compared with the pre-transplant period.

Of the seven patients followed for more than 1 year, all were able to discontinue prophylaxis for infections, at a median of 13-15 months after gene therapy, and five were able to discontinue immunoglobulin supplementation.

Additionally, four of four patients had evidence of a normal immune response based on the development of specific antibodies after vaccination.

Four patients had resolution of their eczemas, and the other two with eczema had only mild cases.

At a median of 4 months after genetic therapy, none of the patients required platelet transfusions. Out to at least 1 year, there was no evidence of autoimmunity.

Among all patients, there were reductions in the frequency or severity of bleeding, no severe bleeding episodes, no hospitalizations for bleeding and a reduction in the number of hospitalizations for infections.

There were no serious adverse events related to the transplant.

The study was sponsored by IRCCS San Raffaele with support from the Fondazione Telethon and GlaxoSmithKline. Dr. Ferrua reported having no conflicts of interest.

SAN DIEGO – In-hospital mortality in patients with aspergillosis plummeted nationally, according to data from 2001-2011, with the biggest improvement seen in immunocompromised patients traditionally considered at high mortality risk, Dr. Masako Mizusawa reported at the annual Interscience Conference on Antimicrobial Agents and Chemotherapy.

The decline in in-hospital mortality wasn’t linear. Rather, it followed a stepwise pattern, and those steps occurred in association with three major advances during the study years: Food and Drug Administration approval of voriconazole in 2002, the FDA’s 2003 approval of the galactomannan serologic assay allowing for speedier diagnosis of aspergillosis, and the 2008 Infectious Diseases Society of America clinical practice guidelines on the treatment of aspergillosis (Clin Infect Dis. 2008 Feb 1;46[3]:327-60).

Bruce Jancin/Frontline Medical News

“This was an observational study and we can’t actually say that these events are causative. But just looking at the time relationship, it certainly looks plausible,” Dr. Mizusawa said.

In addition, the median hospital length of stay decreased from 9 to 7 days in patients with this potentially life-threatening infection, noted Dr. Mizusawa of Tufts Medical Center, Boston.

She presented what she believes is the largest U.S. longitudinal study of hospital care for aspergillosis. The retrospective study used nationally representative data from the Agency for Healthcare Research and Quality’s Healthcare Utilization and Cost Project–Nationwide Inpatient Sample.

Dr. Mizusawa and coinvestigators defined aspergillosis patients as being at high mortality risk if they had established risk factors indicative of immunocompromise, including hematologic malignancy, neutropenia, recent stem cell or solid organ transplantation, HIV, or rheumatologic disease. Patients at lower mortality risk included those with asthma, COPD, diabetes, malnutrition, pulmonary tuberculosis, or non-TB mycobacterial infection.

The proportion of patients who were high risk climbed over the years, from 41% among the 892 patients with aspergillosis-related hospitalization in the 2001 sample to 50% among 1,420 patients in 2011. Yet in-hospital mortality in high-risk patients fell from 26.4% in 2001 to 9.1% in 2011. Meanwhile, the mortality rate in lower-risk patients improved from 14.6% to 6.6%. The overall in-hospital mortality rate went from 18.8% to 7.7%.

Of note, the proportion of aspergillosis patients with renal failure jumped from 9.8% in 2001 to 21.5% in 2011, even though the treatments for aspergillosis are relatively non-nephrotoxic, with the exception of amphotericin B. The outlook for these patients has improved greatly: In-hospital mortality for aspergillosis patients in renal failure went from 40.2% in 2001 to 16.1% in 2011.

While in-hospital mortality and length of stay were decreasing during the study years, total hospital charges for patients with aspergillosis were going up: from a median of $29,998 in 2001 to $44,888 in 2001 dollars a decade later. This cost-of-care increase was confined to patients at lower baseline risk or with no risk factors. Somewhat surprisingly, the high-risk group didn’t have a significant increase in hospital charges over the 10-year period.

“Maybe we’re just doing a better job of treating them, so they may not necessarily have to use a lot of resources,” Dr. Mizusawa offered as explanation.

She reported having no financial conflicts regarding this unfunded study.

[email protected]

SAN DIEGO – In-hospital mortality in patients with aspergillosis plummeted nationally, according to data from 2001-2011, with the biggest improvement seen in immunocompromised patients traditionally considered at high mortality risk, Dr. Masako Mizusawa reported at the annual Interscience Conference on Antimicrobial Agents and Chemotherapy.

The decline in in-hospital mortality wasn’t linear. Rather, it followed a stepwise pattern, and those steps occurred in association with three major advances during the study years: Food and Drug Administration approval of voriconazole in 2002, the FDA’s 2003 approval of the galactomannan serologic assay allowing for speedier diagnosis of aspergillosis, and the 2008 Infectious Diseases Society of America clinical practice guidelines on the treatment of aspergillosis (Clin Infect Dis. 2008 Feb 1;46[3]:327-60).

Bruce Jancin/Frontline Medical News

“This was an observational study and we can’t actually say that these events are causative. But just looking at the time relationship, it certainly looks plausible,” Dr. Mizusawa said.

In addition, the median hospital length of stay decreased from 9 to 7 days in patients with this potentially life-threatening infection, noted Dr. Mizusawa of Tufts Medical Center, Boston.

She presented what she believes is the largest U.S. longitudinal study of hospital care for aspergillosis. The retrospective study used nationally representative data from the Agency for Healthcare Research and Quality’s Healthcare Utilization and Cost Project–Nationwide Inpatient Sample.

Dr. Mizusawa and coinvestigators defined aspergillosis patients as being at high mortality risk if they had established risk factors indicative of immunocompromise, including hematologic malignancy, neutropenia, recent stem cell or solid organ transplantation, HIV, or rheumatologic disease. Patients at lower mortality risk included those with asthma, COPD, diabetes, malnutrition, pulmonary tuberculosis, or non-TB mycobacterial infection.

The proportion of patients who were high risk climbed over the years, from 41% among the 892 patients with aspergillosis-related hospitalization in the 2001 sample to 50% among 1,420 patients in 2011. Yet in-hospital mortality in high-risk patients fell from 26.4% in 2001 to 9.1% in 2011. Meanwhile, the mortality rate in lower-risk patients improved from 14.6% to 6.6%. The overall in-hospital mortality rate went from 18.8% to 7.7%.

Of note, the proportion of aspergillosis patients with renal failure jumped from 9.8% in 2001 to 21.5% in 2011, even though the treatments for aspergillosis are relatively non-nephrotoxic, with the exception of amphotericin B. The outlook for these patients has improved greatly: In-hospital mortality for aspergillosis patients in renal failure went from 40.2% in 2001 to 16.1% in 2011.

While in-hospital mortality and length of stay were decreasing during the study years, total hospital charges for patients with aspergillosis were going up: from a median of $29,998 in 2001 to $44,888 in 2001 dollars a decade later. This cost-of-care increase was confined to patients at lower baseline risk or with no risk factors. Somewhat surprisingly, the high-risk group didn’t have a significant increase in hospital charges over the 10-year period.

“Maybe we’re just doing a better job of treating them, so they may not necessarily have to use a lot of resources,” Dr. Mizusawa offered as explanation.

She reported having no financial conflicts regarding this unfunded study.

[email protected]

SAN DIEGO – In-hospital mortality in patients with aspergillosis plummeted nationally, according to data from 2001-2011, with the biggest improvement seen in immunocompromised patients traditionally considered at high mortality risk, Dr. Masako Mizusawa reported at the annual Interscience Conference on Antimicrobial Agents and Chemotherapy.

The decline in in-hospital mortality wasn’t linear. Rather, it followed a stepwise pattern, and those steps occurred in association with three major advances during the study years: Food and Drug Administration approval of voriconazole in 2002, the FDA’s 2003 approval of the galactomannan serologic assay allowing for speedier diagnosis of aspergillosis, and the 2008 Infectious Diseases Society of America clinical practice guidelines on the treatment of aspergillosis (Clin Infect Dis. 2008 Feb 1;46[3]:327-60).

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“This was an observational study and we can’t actually say that these events are causative. But just looking at the time relationship, it certainly looks plausible,” Dr. Mizusawa said.

In addition, the median hospital length of stay decreased from 9 to 7 days in patients with this potentially life-threatening infection, noted Dr. Mizusawa of Tufts Medical Center, Boston.

She presented what she believes is the largest U.S. longitudinal study of hospital care for aspergillosis. The retrospective study used nationally representative data from the Agency for Healthcare Research and Quality’s Healthcare Utilization and Cost Project–Nationwide Inpatient Sample.

Dr. Mizusawa and coinvestigators defined aspergillosis patients as being at high mortality risk if they had established risk factors indicative of immunocompromise, including hematologic malignancy, neutropenia, recent stem cell or solid organ transplantation, HIV, or rheumatologic disease. Patients at lower mortality risk included those with asthma, COPD, diabetes, malnutrition, pulmonary tuberculosis, or non-TB mycobacterial infection.

The proportion of patients who were high risk climbed over the years, from 41% among the 892 patients with aspergillosis-related hospitalization in the 2001 sample to 50% among 1,420 patients in 2011. Yet in-hospital mortality in high-risk patients fell from 26.4% in 2001 to 9.1% in 2011. Meanwhile, the mortality rate in lower-risk patients improved from 14.6% to 6.6%. The overall in-hospital mortality rate went from 18.8% to 7.7%.

Of note, the proportion of aspergillosis patients with renal failure jumped from 9.8% in 2001 to 21.5% in 2011, even though the treatments for aspergillosis are relatively non-nephrotoxic, with the exception of amphotericin B. The outlook for these patients has improved greatly: In-hospital mortality for aspergillosis patients in renal failure went from 40.2% in 2001 to 16.1% in 2011.

While in-hospital mortality and length of stay were decreasing during the study years, total hospital charges for patients with aspergillosis were going up: from a median of $29,998 in 2001 to $44,888 in 2001 dollars a decade later. This cost-of-care increase was confined to patients at lower baseline risk or with no risk factors. Somewhat surprisingly, the high-risk group didn’t have a significant increase in hospital charges over the 10-year period.

“Maybe we’re just doing a better job of treating them, so they may not necessarily have to use a lot of resources,” Dr. Mizusawa offered as explanation.

She reported having no financial conflicts regarding this unfunded study.

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