Anemia

Photo from Amgen

The European Medicines Agency’s Committee for Medicinal Products for Human Use (CHMP) has recommended a label variation for Neulasta® (pegfilgrastim) to include the Neulasta® Onpro® Kit.

The Neulasta Onpro Kit is an on-body injector (OBI) delivery system for Neulasta, which is approved in the European Union to reduce the duration of neutropenia and the incidence of febrile neutropenia in adults treated with cytotoxic chemotherapy for malignancy (with the exception of chronic myeloid leukemia and myelodysplastic syndromes).

The Neulasta Onpro Kit includes a specifically designed Neulasta pre-filled syringe along with a single-use OBI. The small, lightweight OBI is applied to a patient’s skin on the same day of chemotherapy.

The OBI is intended to facilitate timed delivery of the correct dose of Neulasta and eliminate the need for patients to return to a healthcare setting the day after they receive chemotherapy.

The CHMP’s opinion on the Neulasta Onpro Kit will be reviewed by the European Commission (EC).

If the EC agrees with the CHMP, the centralized marketing authorization of Neulasta will be updated to include information on the Neulasta Onpro Kit in the drug’s label.

This change will be valid throughout the European Union. Norway, Iceland, and Liechtenstein will make corresponding decisions about Neulasta’s label on the basis of the EC’s decision.

The EC typically makes a decision within 67 days of the CHMP’s recommendation.

Photo from Amgen

The European Medicines Agency’s Committee for Medicinal Products for Human Use (CHMP) has recommended a label variation for Neulasta® (pegfilgrastim) to include the Neulasta® Onpro® Kit.

The Neulasta Onpro Kit is an on-body injector (OBI) delivery system for Neulasta, which is approved in the European Union to reduce the duration of neutropenia and the incidence of febrile neutropenia in adults treated with cytotoxic chemotherapy for malignancy (with the exception of chronic myeloid leukemia and myelodysplastic syndromes).

The Neulasta Onpro Kit includes a specifically designed Neulasta pre-filled syringe along with a single-use OBI. The small, lightweight OBI is applied to a patient’s skin on the same day of chemotherapy.

The OBI is intended to facilitate timed delivery of the correct dose of Neulasta and eliminate the need for patients to return to a healthcare setting the day after they receive chemotherapy.

The CHMP’s opinion on the Neulasta Onpro Kit will be reviewed by the European Commission (EC).

If the EC agrees with the CHMP, the centralized marketing authorization of Neulasta will be updated to include information on the Neulasta Onpro Kit in the drug’s label.

This change will be valid throughout the European Union. Norway, Iceland, and Liechtenstein will make corresponding decisions about Neulasta’s label on the basis of the EC’s decision.

The EC typically makes a decision within 67 days of the CHMP’s recommendation.

Photo from Amgen

The European Medicines Agency’s Committee for Medicinal Products for Human Use (CHMP) has recommended a label variation for Neulasta® (pegfilgrastim) to include the Neulasta® Onpro® Kit.

The Neulasta Onpro Kit is an on-body injector (OBI) delivery system for Neulasta, which is approved in the European Union to reduce the duration of neutropenia and the incidence of febrile neutropenia in adults treated with cytotoxic chemotherapy for malignancy (with the exception of chronic myeloid leukemia and myelodysplastic syndromes).

The Neulasta Onpro Kit includes a specifically designed Neulasta pre-filled syringe along with a single-use OBI. The small, lightweight OBI is applied to a patient’s skin on the same day of chemotherapy.

The OBI is intended to facilitate timed delivery of the correct dose of Neulasta and eliminate the need for patients to return to a healthcare setting the day after they receive chemotherapy.

The CHMP’s opinion on the Neulasta Onpro Kit will be reviewed by the European Commission (EC).

If the EC agrees with the CHMP, the centralized marketing authorization of Neulasta will be updated to include information on the Neulasta Onpro Kit in the drug’s label.

This change will be valid throughout the European Union. Norway, Iceland, and Liechtenstein will make corresponding decisions about Neulasta’s label on the basis of the EC’s decision.

The EC typically makes a decision within 67 days of the CHMP’s recommendation.

Mitchell Horwitz, MD

SALT LAKE CITY—The expanded umbilical cord blood (UCB) product NiCord can be used as a stand-alone graft, according to research presented at the 2018 BMT Tandem Meetings.

Researchers found that a single NiCord unit provided “robust” engraftment in a phase 1/2 study of patients with high-risk hematologic malignancies.

NiCord recipients had quicker neutrophil and platelet engraftment than matched control subjects who received standard myeloablative UCB transplant (single or double).

Mitchell Horwitz, MD, of the Duke University Medical Center in Durham, North Carolina, presented these results at the meeting as abstract 49.* The research was sponsored by Gamida Cell, the company developing NiCord.

“[NiCord] is an ex vivo expanded cell product that’s derived from an entire unit of umbilical cord blood,” Dr Horwitz explained. “It’s manufactured starting with a CD133-positive selection, which is the progenitor cell population that’s cultured, and a T-cell containing CD133-negative fraction that is provided also at the time of transplant.”

“The culture system contains nicotinamide—that’s the active ingredient in the culture. And that’s supplemented with cytokines—thrombopoietin, IL-6, FLT-3 ligand, and stem cell factor. The culture is 21 days.”

Previous research showed that double UCB transplant including a NiCord unit could provide benefits over standard double UCB transplant. This led Dr Horwitz and his colleagues to wonder if NiCord could be used as a stand-alone graft.

So the team evaluated the safety and efficacy of NiCord alone in 36 adolescents/adults with high-risk hematologic malignancies.

Patients had acute myelogenous leukemia (n=17), acute lymphoblastic leukemia (n=9), myelodysplastic syndrome (n=7), chronic myelogenous leukemia (n=2), and Hodgkin lymphoma (n=1).

Most patients had intermediate (n=15) or high-risk (n=13) disease. They had a median age of 44 (range, 13-63) and a median weight of 75 kg (range, 41-125).

Treatment

For conditioning, 19 patients received thiotepa, busulfan, and fludarabine. Fifteen patients received total body irradiation and fludarabine with or without cyclophosphamide or thiotepa. And 2 patients received clofarabine, fludarabine, and busulfan.

Most patients had a 4/6 human leukocyte antigen (HLA) match (n=26), 8 had a 5/6 HLA match, and 2 had a 6/6 HLA match.

The median total nucleated cell dose was 2.4 x 10⁷/kg prior to expansion of the UCB unit and 3.7 x 10⁷/kg after expansion. The median CD34+ cell dose was 0.2 x 10⁶/kg and 6.3 x 10⁶/kg, respectively.

“CD34 cells were expanded 33-fold in the 3-week culture system,” Dr Horwitz noted. “That translated to a median CD34 dose of 6.3 x 10⁶/kg, a dose comparable to what would be obtained from an adult donor graft.”

Engraftment

There was 1 case of primary graft failure and 2 cases of secondary graft failure. One case of secondary graft failure was associated with an HHV-6 infection, and the other was due to a lethal adenovirus infection.

Of those patients who engrafted, 97% achieved full donor chimerism, and 3% had mixed chimerism.

Dr Horwitz and his colleagues compared engraftment results in the NiCord recipients to results in a cohort of patients from the CIBMTR registry who underwent UCB transplants from 2010 to 2013. They had similar characteristics as the NiCord patients—age, conditioning regimen, disease status, etc.

In total, there were 148 CIBMTR registry patients, 20% of whom received a single UCB unit.

The median time to neutrophil engraftment was 11.5 days (range, 6-26) with NiCord and 21 days in the CIBMTR matched control cohort (P<0.001). The cumulative incidence of neutrophil engraftment was 94.4% and 89.7%, respectively.

The median time to platelet engraftment was 34 days (range, 25-96) with NiCord and 46 days in the CIBMTR controls (P<0.001). The cumulative incidence of platelet engraftment was 80.6% and 67.1%, respectively.

“There’s a median 10-day reduction in neutrophil recovery [and] 12-day reduction in time to platelet recovery [with NiCord],” Dr Horwitz noted. “There is evidence of robust and durable engraftment with a NiCord unit, with one patient now over 7 years from his first transplant on the pilot trial.”

Relapse, survival, and GVHD

Dr Horwitz reported other outcomes in the NiCord recipients without making comparisons to the CIBMTR matched controls.

The estimated 2-year rate of non-relapse mortality in NiCord recipients was 23.8%, and the estimated 2-year incidence of relapse was 33.2%.

The estimated disease-free survival was 49.1% at 1 year and 43.0% at 2 years. The estimated overall survival was 51.2% at 1 year and 2 years.

At 100 days, the rate of grade 2-4 acute GVHD was 44.0%, and the rate of grade 3-4 acute GVHD was 11.1%.

The estimated 1-year rate of mild to severe chronic GVHD was 40.5%, and the estimated 2-year rate of moderate to severe chronic GVHD was 9.8%.

Dr Horwitz said these “promising results” have led to the launch of a phase 3 registration trial in which researchers are comparing NiCord to standard single or double UCB transplant. The trial is open for accrual.

*Information in the abstract differs from the presentation.

Mitchell Horwitz, MD

SALT LAKE CITY—The expanded umbilical cord blood (UCB) product NiCord can be used as a stand-alone graft, according to research presented at the 2018 BMT Tandem Meetings.

Researchers found that a single NiCord unit provided “robust” engraftment in a phase 1/2 study of patients with high-risk hematologic malignancies.

NiCord recipients had quicker neutrophil and platelet engraftment than matched control subjects who received standard myeloablative UCB transplant (single or double).

Mitchell Horwitz, MD, of the Duke University Medical Center in Durham, North Carolina, presented these results at the meeting as abstract 49.* The research was sponsored by Gamida Cell, the company developing NiCord.

“[NiCord] is an ex vivo expanded cell product that’s derived from an entire unit of umbilical cord blood,” Dr Horwitz explained. “It’s manufactured starting with a CD133-positive selection, which is the progenitor cell population that’s cultured, and a T-cell containing CD133-negative fraction that is provided also at the time of transplant.”

“The culture system contains nicotinamide—that’s the active ingredient in the culture. And that’s supplemented with cytokines—thrombopoietin, IL-6, FLT-3 ligand, and stem cell factor. The culture is 21 days.”

Previous research showed that double UCB transplant including a NiCord unit could provide benefits over standard double UCB transplant. This led Dr Horwitz and his colleagues to wonder if NiCord could be used as a stand-alone graft.

So the team evaluated the safety and efficacy of NiCord alone in 36 adolescents/adults with high-risk hematologic malignancies.

Patients had acute myelogenous leukemia (n=17), acute lymphoblastic leukemia (n=9), myelodysplastic syndrome (n=7), chronic myelogenous leukemia (n=2), and Hodgkin lymphoma (n=1).

Most patients had intermediate (n=15) or high-risk (n=13) disease. They had a median age of 44 (range, 13-63) and a median weight of 75 kg (range, 41-125).

Treatment

For conditioning, 19 patients received thiotepa, busulfan, and fludarabine. Fifteen patients received total body irradiation and fludarabine with or without cyclophosphamide or thiotepa. And 2 patients received clofarabine, fludarabine, and busulfan.

Most patients had a 4/6 human leukocyte antigen (HLA) match (n=26), 8 had a 5/6 HLA match, and 2 had a 6/6 HLA match.

The median total nucleated cell dose was 2.4 x 10⁷/kg prior to expansion of the UCB unit and 3.7 x 10⁷/kg after expansion. The median CD34+ cell dose was 0.2 x 10⁶/kg and 6.3 x 10⁶/kg, respectively.

“CD34 cells were expanded 33-fold in the 3-week culture system,” Dr Horwitz noted. “That translated to a median CD34 dose of 6.3 x 10⁶/kg, a dose comparable to what would be obtained from an adult donor graft.”

Engraftment

There was 1 case of primary graft failure and 2 cases of secondary graft failure. One case of secondary graft failure was associated with an HHV-6 infection, and the other was due to a lethal adenovirus infection.

Of those patients who engrafted, 97% achieved full donor chimerism, and 3% had mixed chimerism.

Dr Horwitz and his colleagues compared engraftment results in the NiCord recipients to results in a cohort of patients from the CIBMTR registry who underwent UCB transplants from 2010 to 2013. They had similar characteristics as the NiCord patients—age, conditioning regimen, disease status, etc.

In total, there were 148 CIBMTR registry patients, 20% of whom received a single UCB unit.

The median time to neutrophil engraftment was 11.5 days (range, 6-26) with NiCord and 21 days in the CIBMTR matched control cohort (P<0.001). The cumulative incidence of neutrophil engraftment was 94.4% and 89.7%, respectively.

The median time to platelet engraftment was 34 days (range, 25-96) with NiCord and 46 days in the CIBMTR controls (P<0.001). The cumulative incidence of platelet engraftment was 80.6% and 67.1%, respectively.

“There’s a median 10-day reduction in neutrophil recovery [and] 12-day reduction in time to platelet recovery [with NiCord],” Dr Horwitz noted. “There is evidence of robust and durable engraftment with a NiCord unit, with one patient now over 7 years from his first transplant on the pilot trial.”

Relapse, survival, and GVHD

Dr Horwitz reported other outcomes in the NiCord recipients without making comparisons to the CIBMTR matched controls.

The estimated 2-year rate of non-relapse mortality in NiCord recipients was 23.8%, and the estimated 2-year incidence of relapse was 33.2%.

The estimated disease-free survival was 49.1% at 1 year and 43.0% at 2 years. The estimated overall survival was 51.2% at 1 year and 2 years.

At 100 days, the rate of grade 2-4 acute GVHD was 44.0%, and the rate of grade 3-4 acute GVHD was 11.1%.

The estimated 1-year rate of mild to severe chronic GVHD was 40.5%, and the estimated 2-year rate of moderate to severe chronic GVHD was 9.8%.

Dr Horwitz said these “promising results” have led to the launch of a phase 3 registration trial in which researchers are comparing NiCord to standard single or double UCB transplant. The trial is open for accrual.

*Information in the abstract differs from the presentation.

Mitchell Horwitz, MD

SALT LAKE CITY—The expanded umbilical cord blood (UCB) product NiCord can be used as a stand-alone graft, according to research presented at the 2018 BMT Tandem Meetings.

Researchers found that a single NiCord unit provided “robust” engraftment in a phase 1/2 study of patients with high-risk hematologic malignancies.

NiCord recipients had quicker neutrophil and platelet engraftment than matched control subjects who received standard myeloablative UCB transplant (single or double).

Mitchell Horwitz, MD, of the Duke University Medical Center in Durham, North Carolina, presented these results at the meeting as abstract 49.* The research was sponsored by Gamida Cell, the company developing NiCord.

“[NiCord] is an ex vivo expanded cell product that’s derived from an entire unit of umbilical cord blood,” Dr Horwitz explained. “It’s manufactured starting with a CD133-positive selection, which is the progenitor cell population that’s cultured, and a T-cell containing CD133-negative fraction that is provided also at the time of transplant.”

“The culture system contains nicotinamide—that’s the active ingredient in the culture. And that’s supplemented with cytokines—thrombopoietin, IL-6, FLT-3 ligand, and stem cell factor. The culture is 21 days.”

Previous research showed that double UCB transplant including a NiCord unit could provide benefits over standard double UCB transplant. This led Dr Horwitz and his colleagues to wonder if NiCord could be used as a stand-alone graft.

So the team evaluated the safety and efficacy of NiCord alone in 36 adolescents/adults with high-risk hematologic malignancies.

Patients had acute myelogenous leukemia (n=17), acute lymphoblastic leukemia (n=9), myelodysplastic syndrome (n=7), chronic myelogenous leukemia (n=2), and Hodgkin lymphoma (n=1).

Most patients had intermediate (n=15) or high-risk (n=13) disease. They had a median age of 44 (range, 13-63) and a median weight of 75 kg (range, 41-125).

Treatment

For conditioning, 19 patients received thiotepa, busulfan, and fludarabine. Fifteen patients received total body irradiation and fludarabine with or without cyclophosphamide or thiotepa. And 2 patients received clofarabine, fludarabine, and busulfan.

Most patients had a 4/6 human leukocyte antigen (HLA) match (n=26), 8 had a 5/6 HLA match, and 2 had a 6/6 HLA match.

The median total nucleated cell dose was 2.4 x 10⁷/kg prior to expansion of the UCB unit and 3.7 x 10⁷/kg after expansion. The median CD34+ cell dose was 0.2 x 10⁶/kg and 6.3 x 10⁶/kg, respectively.

“CD34 cells were expanded 33-fold in the 3-week culture system,” Dr Horwitz noted. “That translated to a median CD34 dose of 6.3 x 10⁶/kg, a dose comparable to what would be obtained from an adult donor graft.”

Engraftment

There was 1 case of primary graft failure and 2 cases of secondary graft failure. One case of secondary graft failure was associated with an HHV-6 infection, and the other was due to a lethal adenovirus infection.

Of those patients who engrafted, 97% achieved full donor chimerism, and 3% had mixed chimerism.

Dr Horwitz and his colleagues compared engraftment results in the NiCord recipients to results in a cohort of patients from the CIBMTR registry who underwent UCB transplants from 2010 to 2013. They had similar characteristics as the NiCord patients—age, conditioning regimen, disease status, etc.

In total, there were 148 CIBMTR registry patients, 20% of whom received a single UCB unit.

The median time to neutrophil engraftment was 11.5 days (range, 6-26) with NiCord and 21 days in the CIBMTR matched control cohort (P<0.001). The cumulative incidence of neutrophil engraftment was 94.4% and 89.7%, respectively.

The median time to platelet engraftment was 34 days (range, 25-96) with NiCord and 46 days in the CIBMTR controls (P<0.001). The cumulative incidence of platelet engraftment was 80.6% and 67.1%, respectively.

“There’s a median 10-day reduction in neutrophil recovery [and] 12-day reduction in time to platelet recovery [with NiCord],” Dr Horwitz noted. “There is evidence of robust and durable engraftment with a NiCord unit, with one patient now over 7 years from his first transplant on the pilot trial.”

Relapse, survival, and GVHD

Dr Horwitz reported other outcomes in the NiCord recipients without making comparisons to the CIBMTR matched controls.

The estimated 2-year rate of non-relapse mortality in NiCord recipients was 23.8%, and the estimated 2-year incidence of relapse was 33.2%.

The estimated disease-free survival was 49.1% at 1 year and 43.0% at 2 years. The estimated overall survival was 51.2% at 1 year and 2 years.

At 100 days, the rate of grade 2-4 acute GVHD was 44.0%, and the rate of grade 3-4 acute GVHD was 11.1%.

The estimated 1-year rate of mild to severe chronic GVHD was 40.5%, and the estimated 2-year rate of moderate to severe chronic GVHD was 9.8%.

Dr Horwitz said these “promising results” have led to the launch of a phase 3 registration trial in which researchers are comparing NiCord to standard single or double UCB transplant. The trial is open for accrual.

*Information in the abstract differs from the presentation.

Javier Bolaños-Meade, MD

SALT LAKE CITY—Cure of severe hemoglobinopathies is now possible for most patients, according to a speaker at the 2018 BMT Tandem Meetings.

Results of a small study suggest that nonmyeloablative haploidentical bone marrow transplant (minihaplo-BMT), when used with 400 cGy total body irradiation and post-transplant cyclophosphamide, can cure sickle cell disease (SCD) and beta-thalassemia while conferring limited toxicity.

“This is our second study showing that you can certainly get rid of these conditions using haploidentical donors and, also, that you can cure these conditions with a nonmyeloablative regimen,” said Javier Bolaños-Meade, MD, of Johns Hopkins University in Baltimore, Maryland.

“What we saw [in the current study] is that increasing the total body irradiation from 200 cGy to 400 cGy can overcome the very high rate of graft failure we observed in our prior study.”

However, the results also suggest that major ABO incompatible donors should be avoided.

Dr Bolaños-Meade presented these findings as a late-breaking abstract (LBA3) at this year’s BMT Tandem Meetings.

He began the presentation by pointing out that allogeneic BMT is the only potential cure for SCD and beta-thalassemia. Unfortunately, most of these patients have been excluded from transplant due to a lack of matched donors, concerns over graft-vs-host disease (GVHD), and/or compromised end organ function precluding them from myeloablative conditioning.

With a prior study, Dr Bolaños-Meade and his colleagues found that minihaplo-BMT with post-transplant cyclophosphamide expanded the donor pool and was well tolerated in patients with SCD. However, the rate of secondary graft failure was high, at 43%.

“We hypothesized that increasing the amount of radiation that was given to these patients, making the regimen absolutely more intensive, will help us to overcome this rate of graft failure and retain the tolerability of the regimen,” Dr Bolaños-Meade said.

He and his colleagues tested this theory in 12 patients with SCD and 5 with beta-thalassemia.

The SCD patients had a median age of 26 (range, 6-31), and most (n=8) were female. Ten were African-American, and 2 were of Arab descent.

All SCD patients had at least 2 hospital admissions in the last 2 years, 5 had osteonecrosis, 3 were transfusion-dependent, 2 had a history of acute chest syndrome, and 1 patient had changes in brain magnetic resonance imaging.

The thalassemia patients had a median age of 7 (range, 6-16). Four were female, and all 5 were of Arab descent. All patients were transfusion-dependent from infancy.

Treatment

All patients received antithymocyte globulin (rabbit) at 0.5 mg/kg on day -9 and 2 mg/kg on days -8 and -7, fludarabine at 30 mg/m² on days -6 to -2, cyclophosphamide at 14.5 mg/kg on days -6 and -5, and total body irradiation at 400 cGy on day -1.

Patients received unmanipulated bone marrow that was collected and infused on day 0. Donors included 1 aunt, 4 brothers, 3 sisters, 5 mothers, and 4 fathers. There were 2 major ABO incompatible pairs, 5 minor ABO incompatible pairs, and 10 ABO compatible pairs.

For GVHD prophylaxis, patients received 50 mg/kg/day of cyclophosphamide on days 3 and 4, sirolimus (levels of 5-10 ng/dl) from days 5 to 365, and mycophenolate mofetil at 1 g every 8 hours from days 5 to 35.

Efficacy

All 17 patients are still alive at a median follow-up of 15 months (range, 3-34).

“Of all the patients transplanted, we only observed 1 graft failure,” Dr Bolaños-Meade said. “This is in sharp contrast to the 40% graft failure in our prior study.”

Thirteen patients achieved full donor chimerism, and 3 had mixed chimerism.

Four of the 5 beta-thalassemia patients achieved full donor chimerism, and 1 had mixed chimerism. All 5 patients became transfusion-independent.

Eleven of the 12 SCD patients engrafted, and 9 achieved full donor chimerism.

All but one of the engrafted SCD patients became transfusion-independent. The exception was a mixed chimeric patient who had a major ABO mismatched donor. The patient remains transfusion-dependent more than 30 months after BMT.

“This is the main problem we have seen in all our sickle cell and hemoglobinopathy experiences,” Dr Bolaños-Meade said. “If you have a major ABO incompatibility, and there’s mixed chimerism, you’re asking for trouble.”

Toxicity

All SCD patients had sickle cell crises after antithymocyte globulin. Other toxicities included sirolimus-induced diabetes in 1 patient, worsening of Meniere’s disease in 1 patient, and BK cystitis in 1 patient.

Two patients developed grade 2 acute GVHD, and 1 developed grade 3 acute GVHD. Three patients had chronic GVHD, 2 mild and 1 moderate.

However, all cases of GVHD resolved. And, of the 8 engrafted patients with more than 1 year of follow-up, 6 are off systemic immunosuppression.

Javier Bolaños-Meade, MD

SALT LAKE CITY—Cure of severe hemoglobinopathies is now possible for most patients, according to a speaker at the 2018 BMT Tandem Meetings.

Results of a small study suggest that nonmyeloablative haploidentical bone marrow transplant (minihaplo-BMT), when used with 400 cGy total body irradiation and post-transplant cyclophosphamide, can cure sickle cell disease (SCD) and beta-thalassemia while conferring limited toxicity.

“This is our second study showing that you can certainly get rid of these conditions using haploidentical donors and, also, that you can cure these conditions with a nonmyeloablative regimen,” said Javier Bolaños-Meade, MD, of Johns Hopkins University in Baltimore, Maryland.

“What we saw [in the current study] is that increasing the total body irradiation from 200 cGy to 400 cGy can overcome the very high rate of graft failure we observed in our prior study.”

However, the results also suggest that major ABO incompatible donors should be avoided.

Dr Bolaños-Meade presented these findings as a late-breaking abstract (LBA3) at this year’s BMT Tandem Meetings.

He began the presentation by pointing out that allogeneic BMT is the only potential cure for SCD and beta-thalassemia. Unfortunately, most of these patients have been excluded from transplant due to a lack of matched donors, concerns over graft-vs-host disease (GVHD), and/or compromised end organ function precluding them from myeloablative conditioning.

With a prior study, Dr Bolaños-Meade and his colleagues found that minihaplo-BMT with post-transplant cyclophosphamide expanded the donor pool and was well tolerated in patients with SCD. However, the rate of secondary graft failure was high, at 43%.

“We hypothesized that increasing the amount of radiation that was given to these patients, making the regimen absolutely more intensive, will help us to overcome this rate of graft failure and retain the tolerability of the regimen,” Dr Bolaños-Meade said.

He and his colleagues tested this theory in 12 patients with SCD and 5 with beta-thalassemia.

The SCD patients had a median age of 26 (range, 6-31), and most (n=8) were female. Ten were African-American, and 2 were of Arab descent.

All SCD patients had at least 2 hospital admissions in the last 2 years, 5 had osteonecrosis, 3 were transfusion-dependent, 2 had a history of acute chest syndrome, and 1 patient had changes in brain magnetic resonance imaging.

The thalassemia patients had a median age of 7 (range, 6-16). Four were female, and all 5 were of Arab descent. All patients were transfusion-dependent from infancy.

Treatment

All patients received antithymocyte globulin (rabbit) at 0.5 mg/kg on day -9 and 2 mg/kg on days -8 and -7, fludarabine at 30 mg/m² on days -6 to -2, cyclophosphamide at 14.5 mg/kg on days -6 and -5, and total body irradiation at 400 cGy on day -1.

Patients received unmanipulated bone marrow that was collected and infused on day 0. Donors included 1 aunt, 4 brothers, 3 sisters, 5 mothers, and 4 fathers. There were 2 major ABO incompatible pairs, 5 minor ABO incompatible pairs, and 10 ABO compatible pairs.

For GVHD prophylaxis, patients received 50 mg/kg/day of cyclophosphamide on days 3 and 4, sirolimus (levels of 5-10 ng/dl) from days 5 to 365, and mycophenolate mofetil at 1 g every 8 hours from days 5 to 35.

Efficacy

All 17 patients are still alive at a median follow-up of 15 months (range, 3-34).

“Of all the patients transplanted, we only observed 1 graft failure,” Dr Bolaños-Meade said. “This is in sharp contrast to the 40% graft failure in our prior study.”

Thirteen patients achieved full donor chimerism, and 3 had mixed chimerism.

Four of the 5 beta-thalassemia patients achieved full donor chimerism, and 1 had mixed chimerism. All 5 patients became transfusion-independent.

Eleven of the 12 SCD patients engrafted, and 9 achieved full donor chimerism.

All but one of the engrafted SCD patients became transfusion-independent. The exception was a mixed chimeric patient who had a major ABO mismatched donor. The patient remains transfusion-dependent more than 30 months after BMT.

“This is the main problem we have seen in all our sickle cell and hemoglobinopathy experiences,” Dr Bolaños-Meade said. “If you have a major ABO incompatibility, and there’s mixed chimerism, you’re asking for trouble.”

Toxicity

All SCD patients had sickle cell crises after antithymocyte globulin. Other toxicities included sirolimus-induced diabetes in 1 patient, worsening of Meniere’s disease in 1 patient, and BK cystitis in 1 patient.

Two patients developed grade 2 acute GVHD, and 1 developed grade 3 acute GVHD. Three patients had chronic GVHD, 2 mild and 1 moderate.

However, all cases of GVHD resolved. And, of the 8 engrafted patients with more than 1 year of follow-up, 6 are off systemic immunosuppression.

Javier Bolaños-Meade, MD

SALT LAKE CITY—Cure of severe hemoglobinopathies is now possible for most patients, according to a speaker at the 2018 BMT Tandem Meetings.

Results of a small study suggest that nonmyeloablative haploidentical bone marrow transplant (minihaplo-BMT), when used with 400 cGy total body irradiation and post-transplant cyclophosphamide, can cure sickle cell disease (SCD) and beta-thalassemia while conferring limited toxicity.

“This is our second study showing that you can certainly get rid of these conditions using haploidentical donors and, also, that you can cure these conditions with a nonmyeloablative regimen,” said Javier Bolaños-Meade, MD, of Johns Hopkins University in Baltimore, Maryland.

“What we saw [in the current study] is that increasing the total body irradiation from 200 cGy to 400 cGy can overcome the very high rate of graft failure we observed in our prior study.”

However, the results also suggest that major ABO incompatible donors should be avoided.

Dr Bolaños-Meade presented these findings as a late-breaking abstract (LBA3) at this year’s BMT Tandem Meetings.

He began the presentation by pointing out that allogeneic BMT is the only potential cure for SCD and beta-thalassemia. Unfortunately, most of these patients have been excluded from transplant due to a lack of matched donors, concerns over graft-vs-host disease (GVHD), and/or compromised end organ function precluding them from myeloablative conditioning.

With a prior study, Dr Bolaños-Meade and his colleagues found that minihaplo-BMT with post-transplant cyclophosphamide expanded the donor pool and was well tolerated in patients with SCD. However, the rate of secondary graft failure was high, at 43%.

“We hypothesized that increasing the amount of radiation that was given to these patients, making the regimen absolutely more intensive, will help us to overcome this rate of graft failure and retain the tolerability of the regimen,” Dr Bolaños-Meade said.

He and his colleagues tested this theory in 12 patients with SCD and 5 with beta-thalassemia.

The SCD patients had a median age of 26 (range, 6-31), and most (n=8) were female. Ten were African-American, and 2 were of Arab descent.

All SCD patients had at least 2 hospital admissions in the last 2 years, 5 had osteonecrosis, 3 were transfusion-dependent, 2 had a history of acute chest syndrome, and 1 patient had changes in brain magnetic resonance imaging.

The thalassemia patients had a median age of 7 (range, 6-16). Four were female, and all 5 were of Arab descent. All patients were transfusion-dependent from infancy.

Treatment

All patients received antithymocyte globulin (rabbit) at 0.5 mg/kg on day -9 and 2 mg/kg on days -8 and -7, fludarabine at 30 mg/m² on days -6 to -2, cyclophosphamide at 14.5 mg/kg on days -6 and -5, and total body irradiation at 400 cGy on day -1.

Patients received unmanipulated bone marrow that was collected and infused on day 0. Donors included 1 aunt, 4 brothers, 3 sisters, 5 mothers, and 4 fathers. There were 2 major ABO incompatible pairs, 5 minor ABO incompatible pairs, and 10 ABO compatible pairs.

For GVHD prophylaxis, patients received 50 mg/kg/day of cyclophosphamide on days 3 and 4, sirolimus (levels of 5-10 ng/dl) from days 5 to 365, and mycophenolate mofetil at 1 g every 8 hours from days 5 to 35.

Efficacy

All 17 patients are still alive at a median follow-up of 15 months (range, 3-34).

“Of all the patients transplanted, we only observed 1 graft failure,” Dr Bolaños-Meade said. “This is in sharp contrast to the 40% graft failure in our prior study.”

Thirteen patients achieved full donor chimerism, and 3 had mixed chimerism.

Four of the 5 beta-thalassemia patients achieved full donor chimerism, and 1 had mixed chimerism. All 5 patients became transfusion-independent.

Eleven of the 12 SCD patients engrafted, and 9 achieved full donor chimerism.

All but one of the engrafted SCD patients became transfusion-independent. The exception was a mixed chimeric patient who had a major ABO mismatched donor. The patient remains transfusion-dependent more than 30 months after BMT.

“This is the main problem we have seen in all our sickle cell and hemoglobinopathy experiences,” Dr Bolaños-Meade said. “If you have a major ABO incompatibility, and there’s mixed chimerism, you’re asking for trouble.”

Toxicity

All SCD patients had sickle cell crises after antithymocyte globulin. Other toxicities included sirolimus-induced diabetes in 1 patient, worsening of Meniere’s disease in 1 patient, and BK cystitis in 1 patient.

Two patients developed grade 2 acute GVHD, and 1 developed grade 3 acute GVHD. Three patients had chronic GVHD, 2 mild and 1 moderate.

However, all cases of GVHD resolved. And, of the 8 engrafted patients with more than 1 year of follow-up, 6 are off systemic immunosuppression.

Image by Joshua Stokes

Results of a phase 1/2 trial suggest treatment with haploidentical natural killer (NK) cells can be effective against relapsed/refractory myelodysplastic syndromes (MDS) and acute myeloid leukemia (AML).

NK-cell therapy elicited responses in 6 of the 16 patients studied and provided a bridge to transplant for 5 patients.

Three responders were still alive at more than 3 years of follow-up.

There were 4 grade 3 adverse events (AEs) and 2 grade 5 AEs considered possibly or probably related to NK-cell therapy.

Investigators reported these results in Clinical Cancer Research.

The trial enrolled 16 patients. Eight had MDS/AML, 3 had de novo AML, and 5 had high-risk MDS, including refractory anemia with excess blasts (RAEB) type 1 progressing toward type 2, RAEB-2, and chronic myelomonocytic leukemia type 2.

The patients’ median age was 64 (range, 40-70), and they had received a median of 3 prior therapies (range, 1-6). Six patients had received an allogeneic hematopoietic stem cell transplant (HSCT).

For this study, all patients received fludarabine, cyclophosphamide, and total lymphoid irradiation prior to receiving haploidentical NK cells.

The median follow-up was 8 months for all patients and 28 months for responders.

Efficacy

Six patients responded to treatment. One patient with de novo AML had a complete response (CR). Two high-risk MDS patients had a marrow CR (mCR), as did 2 MDS/AML patients. One MDS/AML patient had a partial response (PR).

Two patients had stable disease (SD)—1 with MDS and 1 with MDS/AML. One patient with de novo AML had a morphologic leukemia-free state after NK-cell therapy.

Five patients proceeded to HSCT—3 in mCR, 1 in PR, and 1 with SD.

Three patients were still alive at last follow-up—1 with MDS who achieved an mCR and went on to HSCT, 1 with MDS/AML who achieved an mCR and went on to HSCT, and 1 with MDS/AML who achieved an mCR and went on to receive chemotherapy and donor lymphocyte infusion.

One survivor has more than 5 years of follow-up (the MDS patient), and the other 2 have more than 3 years of follow-up.

“Our study shows that patients with MDS, AML, and MDS/AML can be treated with NK cell-based immunotherapy and that the therapy can be highly efficacious,” said study author Hans-Gustaf Ljunggren, MD, PhD, of Karolinska Institutet in Stockholm, Sweden.

Safety

The most common AEs of any grade considered possibly or probably related to NK-cell therapy were chills (n=13) and nausea (n=4).

Two patients had cytokine release syndrome (CRS) likely associated with hemophagocytic lymphohistiocytosis (HLH).

Each of the following potentially related AEs were reported once: headache, vomiting, encephalitis infection, sinus tachycardia, bone pain, pain in extremity, and maculopapular rash.

There were 4 grade 3 AEs—CRS/HLH (n=1), chills (n=1), and nausea (n=2)—but no grade 4 AEs.

There were 2 grade 5 AEs—CRS/HLH and encephalitis infection. These occurred in a single patient who died with HLH, human herpes virus-6 encephalitis, and AML relapse.

Two investigators involved in this study serve on the scientific advisory board of Fate Therapeutics. Dr Ljunggren serves on the scientific advisory board of CellProtect, Nordic Pharmaceuticals, and HOPE Bio-Sciences. He is also on the board of directors of Vycellix and is a collaborator with Fate Therapeutics.

Image by Joshua Stokes

Results of a phase 1/2 trial suggest treatment with haploidentical natural killer (NK) cells can be effective against relapsed/refractory myelodysplastic syndromes (MDS) and acute myeloid leukemia (AML).

NK-cell therapy elicited responses in 6 of the 16 patients studied and provided a bridge to transplant for 5 patients.

Three responders were still alive at more than 3 years of follow-up.

There were 4 grade 3 adverse events (AEs) and 2 grade 5 AEs considered possibly or probably related to NK-cell therapy.

Investigators reported these results in Clinical Cancer Research.

The trial enrolled 16 patients. Eight had MDS/AML, 3 had de novo AML, and 5 had high-risk MDS, including refractory anemia with excess blasts (RAEB) type 1 progressing toward type 2, RAEB-2, and chronic myelomonocytic leukemia type 2.

The patients’ median age was 64 (range, 40-70), and they had received a median of 3 prior therapies (range, 1-6). Six patients had received an allogeneic hematopoietic stem cell transplant (HSCT).

For this study, all patients received fludarabine, cyclophosphamide, and total lymphoid irradiation prior to receiving haploidentical NK cells.

The median follow-up was 8 months for all patients and 28 months for responders.

Efficacy

Six patients responded to treatment. One patient with de novo AML had a complete response (CR). Two high-risk MDS patients had a marrow CR (mCR), as did 2 MDS/AML patients. One MDS/AML patient had a partial response (PR).

Two patients had stable disease (SD)—1 with MDS and 1 with MDS/AML. One patient with de novo AML had a morphologic leukemia-free state after NK-cell therapy.

Five patients proceeded to HSCT—3 in mCR, 1 in PR, and 1 with SD.

Three patients were still alive at last follow-up—1 with MDS who achieved an mCR and went on to HSCT, 1 with MDS/AML who achieved an mCR and went on to HSCT, and 1 with MDS/AML who achieved an mCR and went on to receive chemotherapy and donor lymphocyte infusion.

One survivor has more than 5 years of follow-up (the MDS patient), and the other 2 have more than 3 years of follow-up.

“Our study shows that patients with MDS, AML, and MDS/AML can be treated with NK cell-based immunotherapy and that the therapy can be highly efficacious,” said study author Hans-Gustaf Ljunggren, MD, PhD, of Karolinska Institutet in Stockholm, Sweden.

Safety

The most common AEs of any grade considered possibly or probably related to NK-cell therapy were chills (n=13) and nausea (n=4).

Two patients had cytokine release syndrome (CRS) likely associated with hemophagocytic lymphohistiocytosis (HLH).

Each of the following potentially related AEs were reported once: headache, vomiting, encephalitis infection, sinus tachycardia, bone pain, pain in extremity, and maculopapular rash.

There were 4 grade 3 AEs—CRS/HLH (n=1), chills (n=1), and nausea (n=2)—but no grade 4 AEs.

There were 2 grade 5 AEs—CRS/HLH and encephalitis infection. These occurred in a single patient who died with HLH, human herpes virus-6 encephalitis, and AML relapse.

Two investigators involved in this study serve on the scientific advisory board of Fate Therapeutics. Dr Ljunggren serves on the scientific advisory board of CellProtect, Nordic Pharmaceuticals, and HOPE Bio-Sciences. He is also on the board of directors of Vycellix and is a collaborator with Fate Therapeutics.

Image by Joshua Stokes

Results of a phase 1/2 trial suggest treatment with haploidentical natural killer (NK) cells can be effective against relapsed/refractory myelodysplastic syndromes (MDS) and acute myeloid leukemia (AML).

NK-cell therapy elicited responses in 6 of the 16 patients studied and provided a bridge to transplant for 5 patients.

Three responders were still alive at more than 3 years of follow-up.

There were 4 grade 3 adverse events (AEs) and 2 grade 5 AEs considered possibly or probably related to NK-cell therapy.

Investigators reported these results in Clinical Cancer Research.

The trial enrolled 16 patients. Eight had MDS/AML, 3 had de novo AML, and 5 had high-risk MDS, including refractory anemia with excess blasts (RAEB) type 1 progressing toward type 2, RAEB-2, and chronic myelomonocytic leukemia type 2.

The patients’ median age was 64 (range, 40-70), and they had received a median of 3 prior therapies (range, 1-6). Six patients had received an allogeneic hematopoietic stem cell transplant (HSCT).

For this study, all patients received fludarabine, cyclophosphamide, and total lymphoid irradiation prior to receiving haploidentical NK cells.

The median follow-up was 8 months for all patients and 28 months for responders.

Efficacy

Six patients responded to treatment. One patient with de novo AML had a complete response (CR). Two high-risk MDS patients had a marrow CR (mCR), as did 2 MDS/AML patients. One MDS/AML patient had a partial response (PR).

Two patients had stable disease (SD)—1 with MDS and 1 with MDS/AML. One patient with de novo AML had a morphologic leukemia-free state after NK-cell therapy.

Five patients proceeded to HSCT—3 in mCR, 1 in PR, and 1 with SD.

Three patients were still alive at last follow-up—1 with MDS who achieved an mCR and went on to HSCT, 1 with MDS/AML who achieved an mCR and went on to HSCT, and 1 with MDS/AML who achieved an mCR and went on to receive chemotherapy and donor lymphocyte infusion.

One survivor has more than 5 years of follow-up (the MDS patient), and the other 2 have more than 3 years of follow-up.

“Our study shows that patients with MDS, AML, and MDS/AML can be treated with NK cell-based immunotherapy and that the therapy can be highly efficacious,” said study author Hans-Gustaf Ljunggren, MD, PhD, of Karolinska Institutet in Stockholm, Sweden.

Safety

The most common AEs of any grade considered possibly or probably related to NK-cell therapy were chills (n=13) and nausea (n=4).

Two patients had cytokine release syndrome (CRS) likely associated with hemophagocytic lymphohistiocytosis (HLH).

Each of the following potentially related AEs were reported once: headache, vomiting, encephalitis infection, sinus tachycardia, bone pain, pain in extremity, and maculopapular rash.

There were 4 grade 3 AEs—CRS/HLH (n=1), chills (n=1), and nausea (n=2)—but no grade 4 AEs.

There were 2 grade 5 AEs—CRS/HLH and encephalitis infection. These occurred in a single patient who died with HLH, human herpes virus-6 encephalitis, and AML relapse.

Two investigators involved in this study serve on the scientific advisory board of Fate Therapeutics. Dr Ljunggren serves on the scientific advisory board of CellProtect, Nordic Pharmaceuticals, and HOPE Bio-Sciences. He is also on the board of directors of Vycellix and is a collaborator with Fate Therapeutics.

Children’s Research Hospital

Many young children with sickle cell anemia (SCA) may not be taking the recommended antibiotics to prevent invasive pneumococcal disease (IPD), according to research published in Pediatrics.

Results of a previous study indicated that daily treatment with penicillin could reduce the risk of IPD by 84% in young children with SCA.

In the current study, only 18% of young SCA patients received daily penicillin or an equivalent antibiotic as IPD prophylaxis.

“Most children with sickle cell anemia are not getting the antibiotics they should be to adequately protect against potentially deadly infections,” said study author Sarah Reeves, PhD, of the University of Michigan Medical School in Ann Arbor.

“Long-standing recommendations say children with sickle cell anemia should take antibiotics daily for their first 5 years of life. It can be life-saving.”

For this study, Dr Reeves and her colleagues analyzed data on 2821 SCA patients, ages 3 months to 5 years, living in Florida, Illinois, Louisiana, Michigan, South Carolina, and Texas.

The patients were continuously enrolled in the Medicaid program for at least 1 calendar year between 2005 and 2012. The researchers evaluated the receipt of antibiotics through the insurance claims for filled prescriptions.

The team found that, overall, 18% of patients received at least 300 days of antibiotics.

Sixteen percent of patients received at least 300 days of penicillin; 16% received at least 300 days of penicillin or erythromycin; 18% received at least 300 days of penicillin, erythromycin, or amoxicillin; and 22% received at least 300 days of any antibiotic to prevent Streptococcus pneumoniae.

On average, patients received 162 days of penicillin; 164 days of penicillin or erythromycin; 178 days of penicillin, erythromycin, or amoxicillin; and 193 days of any antibiotic to prevent S pneumoniae.

Multivariable analysis suggested that medical visits and a patient’s state of residence were associated with receiving at least 300 days of antibiotics.

The researchers said that each additional SCA-related outpatient visit and well-child visit was associated with incrementally increased odds of receiving at least 300 days of antibiotics. The odds ratio (OR) was 1.01 for SCA-related outpatient visits and 1.08 for well-child visits (P<0.05 for both).

Patients in Florida (OR=0.51, P<0.05), Louisiana (OR=0.57, P<0.05), Michigan (OR=0.60, P<0.05), and South Carolina (OR=0.62, P<0.05) had lower odds of receiving at least 300 days of antibiotics than patients in Illinois (OR=1.00) or Texas (OR=1.01).

The researchers did not investigate why children were not receiving recommended antibiotics, but Dr Reeves identified possible barriers to compliance. She noted that caregiver challenges include picking up prescriptions every 2 weeks from a pharmacy as well as remembering to administer an antibiotic to a young, healthy-appearing child twice a day.

“The types of challenges involved in making sure children get the recommended dose of antibiotics is exacerbated by the substantial burden of care already experienced by families to help control the symptoms of this disease,” Dr Reeves said.

She added that future studies should more deeply explore barriers preventing families from getting antibiotics and potential interventions to improve the rate of children receiving recommended prescriptions.

“Interventions to improve the receipt of antibiotics among children with sickle cell anemia should include enhanced collaboration between healthcare providers, pharmacists, and families,” Dr Reeves said.

“Doctors need to repeatedly discuss the importance of taking antibiotics with families of children with sickle cell anemia. Social factors that may impact receiving filled prescriptions should also be considered, such as the availability of transportation and time to travel to pharmacies to pick up the prescriptions.”

Children’s Research Hospital

Many young children with sickle cell anemia (SCA) may not be taking the recommended antibiotics to prevent invasive pneumococcal disease (IPD), according to research published in Pediatrics.

Results of a previous study indicated that daily treatment with penicillin could reduce the risk of IPD by 84% in young children with SCA.

In the current study, only 18% of young SCA patients received daily penicillin or an equivalent antibiotic as IPD prophylaxis.

“Most children with sickle cell anemia are not getting the antibiotics they should be to adequately protect against potentially deadly infections,” said study author Sarah Reeves, PhD, of the University of Michigan Medical School in Ann Arbor.

“Long-standing recommendations say children with sickle cell anemia should take antibiotics daily for their first 5 years of life. It can be life-saving.”

For this study, Dr Reeves and her colleagues analyzed data on 2821 SCA patients, ages 3 months to 5 years, living in Florida, Illinois, Louisiana, Michigan, South Carolina, and Texas.

The patients were continuously enrolled in the Medicaid program for at least 1 calendar year between 2005 and 2012. The researchers evaluated the receipt of antibiotics through the insurance claims for filled prescriptions.

The team found that, overall, 18% of patients received at least 300 days of antibiotics.

Sixteen percent of patients received at least 300 days of penicillin; 16% received at least 300 days of penicillin or erythromycin; 18% received at least 300 days of penicillin, erythromycin, or amoxicillin; and 22% received at least 300 days of any antibiotic to prevent Streptococcus pneumoniae.

On average, patients received 162 days of penicillin; 164 days of penicillin or erythromycin; 178 days of penicillin, erythromycin, or amoxicillin; and 193 days of any antibiotic to prevent S pneumoniae.

Multivariable analysis suggested that medical visits and a patient’s state of residence were associated with receiving at least 300 days of antibiotics.

The researchers said that each additional SCA-related outpatient visit and well-child visit was associated with incrementally increased odds of receiving at least 300 days of antibiotics. The odds ratio (OR) was 1.01 for SCA-related outpatient visits and 1.08 for well-child visits (P<0.05 for both).

Patients in Florida (OR=0.51, P<0.05), Louisiana (OR=0.57, P<0.05), Michigan (OR=0.60, P<0.05), and South Carolina (OR=0.62, P<0.05) had lower odds of receiving at least 300 days of antibiotics than patients in Illinois (OR=1.00) or Texas (OR=1.01).

The researchers did not investigate why children were not receiving recommended antibiotics, but Dr Reeves identified possible barriers to compliance. She noted that caregiver challenges include picking up prescriptions every 2 weeks from a pharmacy as well as remembering to administer an antibiotic to a young, healthy-appearing child twice a day.

“The types of challenges involved in making sure children get the recommended dose of antibiotics is exacerbated by the substantial burden of care already experienced by families to help control the symptoms of this disease,” Dr Reeves said.

She added that future studies should more deeply explore barriers preventing families from getting antibiotics and potential interventions to improve the rate of children receiving recommended prescriptions.

“Interventions to improve the receipt of antibiotics among children with sickle cell anemia should include enhanced collaboration between healthcare providers, pharmacists, and families,” Dr Reeves said.

“Doctors need to repeatedly discuss the importance of taking antibiotics with families of children with sickle cell anemia. Social factors that may impact receiving filled prescriptions should also be considered, such as the availability of transportation and time to travel to pharmacies to pick up the prescriptions.”

Children’s Research Hospital

Many young children with sickle cell anemia (SCA) may not be taking the recommended antibiotics to prevent invasive pneumococcal disease (IPD), according to research published in Pediatrics.

Results of a previous study indicated that daily treatment with penicillin could reduce the risk of IPD by 84% in young children with SCA.

In the current study, only 18% of young SCA patients received daily penicillin or an equivalent antibiotic as IPD prophylaxis.

“Most children with sickle cell anemia are not getting the antibiotics they should be to adequately protect against potentially deadly infections,” said study author Sarah Reeves, PhD, of the University of Michigan Medical School in Ann Arbor.

“Long-standing recommendations say children with sickle cell anemia should take antibiotics daily for their first 5 years of life. It can be life-saving.”

For this study, Dr Reeves and her colleagues analyzed data on 2821 SCA patients, ages 3 months to 5 years, living in Florida, Illinois, Louisiana, Michigan, South Carolina, and Texas.

The patients were continuously enrolled in the Medicaid program for at least 1 calendar year between 2005 and 2012. The researchers evaluated the receipt of antibiotics through the insurance claims for filled prescriptions.

The team found that, overall, 18% of patients received at least 300 days of antibiotics.

Sixteen percent of patients received at least 300 days of penicillin; 16% received at least 300 days of penicillin or erythromycin; 18% received at least 300 days of penicillin, erythromycin, or amoxicillin; and 22% received at least 300 days of any antibiotic to prevent Streptococcus pneumoniae.

On average, patients received 162 days of penicillin; 164 days of penicillin or erythromycin; 178 days of penicillin, erythromycin, or amoxicillin; and 193 days of any antibiotic to prevent S pneumoniae.

Multivariable analysis suggested that medical visits and a patient’s state of residence were associated with receiving at least 300 days of antibiotics.

The researchers said that each additional SCA-related outpatient visit and well-child visit was associated with incrementally increased odds of receiving at least 300 days of antibiotics. The odds ratio (OR) was 1.01 for SCA-related outpatient visits and 1.08 for well-child visits (P<0.05 for both).

Patients in Florida (OR=0.51, P<0.05), Louisiana (OR=0.57, P<0.05), Michigan (OR=0.60, P<0.05), and South Carolina (OR=0.62, P<0.05) had lower odds of receiving at least 300 days of antibiotics than patients in Illinois (OR=1.00) or Texas (OR=1.01).

The researchers did not investigate why children were not receiving recommended antibiotics, but Dr Reeves identified possible barriers to compliance. She noted that caregiver challenges include picking up prescriptions every 2 weeks from a pharmacy as well as remembering to administer an antibiotic to a young, healthy-appearing child twice a day.

“The types of challenges involved in making sure children get the recommended dose of antibiotics is exacerbated by the substantial burden of care already experienced by families to help control the symptoms of this disease,” Dr Reeves said.

She added that future studies should more deeply explore barriers preventing families from getting antibiotics and potential interventions to improve the rate of children receiving recommended prescriptions.

“Interventions to improve the receipt of antibiotics among children with sickle cell anemia should include enhanced collaboration between healthcare providers, pharmacists, and families,” Dr Reeves said.

“Doctors need to repeatedly discuss the importance of taking antibiotics with families of children with sickle cell anemia. Social factors that may impact receiving filled prescriptions should also be considered, such as the availability of transportation and time to travel to pharmacies to pick up the prescriptions.”

Photo by Bill Branson

Azacitidine for injection (Vidaza®) is now available in China.

The nucleoside metabolic inhibitor was approved in China to treat patients with intermediate-2/high-risk myelodysplastic syndromes (MDS), acute myeloid leukemia (AML) with 20% to 30% bone marrow blasts, and chronic myelomonocytic leukemia (CMML).

Azacitidine for injection is marketed in China by BeiGene Ltd. under an exclusive license from Celgene Corporation.

“Vidaza is the only approved hypomethylating agent shown to prolong survival for patients with MDS and the first new treatment for MDS patients approved in China since 2009,” said John V. Oyler, founder, chief executive officer, and chairman of BeiGene.

“We are excited to announce that the first prescription was made in January 2018. From now on, Chinese patients can benefit from Vidaza in hospitals around China.”

Azacitidine was evaluated in a global phase 3 trial of patients with intermediate-2- and high-risk MDS, CMML, or AML (AZA-001). Results from this trial were published in The Lancet Oncology in 2009.

Patients were randomized to receive azacitidine plus best supportive care (BSC, n=179) or conventional care regimens plus BSC (105 to BSC alone, 49 to low-dose cytarabine, and 25 to chemotherapy with cytarabine and anthracycline).

Azacitidine was given subcutaneously at a dose of 75 mg/m² daily for 7 consecutive days every 28 days until disease progression, relapse after response, or unacceptable toxicity.

The median overall survival was 24.5 months with azacitidine, compared to 15 months for patients treated with conventional care regimens.

There was a higher hematologic response rate in the azacitidine arm than the conventional care arm—29% and 12%, respectively.

In the azacitidine group, 45% of patients who were dependent on red blood cell transfusions at baseline became transfusion independent, compared with 11% in the conventional care group.

Forty-six percent of patients in the azacitidine arm and 63% in the conventional care arm died.

Grade 3/4 hematologic toxicity (in the azacitidine and conventional care arms, respectively) included neutropenia (91% and 76%), thrombocytopenia (85% and 80%), and anemia (57% and 68%).

Photo by Bill Branson

Azacitidine for injection (Vidaza®) is now available in China.

The nucleoside metabolic inhibitor was approved in China to treat patients with intermediate-2/high-risk myelodysplastic syndromes (MDS), acute myeloid leukemia (AML) with 20% to 30% bone marrow blasts, and chronic myelomonocytic leukemia (CMML).

Azacitidine for injection is marketed in China by BeiGene Ltd. under an exclusive license from Celgene Corporation.

“Vidaza is the only approved hypomethylating agent shown to prolong survival for patients with MDS and the first new treatment for MDS patients approved in China since 2009,” said John V. Oyler, founder, chief executive officer, and chairman of BeiGene.

“We are excited to announce that the first prescription was made in January 2018. From now on, Chinese patients can benefit from Vidaza in hospitals around China.”

Azacitidine was evaluated in a global phase 3 trial of patients with intermediate-2- and high-risk MDS, CMML, or AML (AZA-001). Results from this trial were published in The Lancet Oncology in 2009.

Patients were randomized to receive azacitidine plus best supportive care (BSC, n=179) or conventional care regimens plus BSC (105 to BSC alone, 49 to low-dose cytarabine, and 25 to chemotherapy with cytarabine and anthracycline).

Azacitidine was given subcutaneously at a dose of 75 mg/m² daily for 7 consecutive days every 28 days until disease progression, relapse after response, or unacceptable toxicity.

The median overall survival was 24.5 months with azacitidine, compared to 15 months for patients treated with conventional care regimens.

There was a higher hematologic response rate in the azacitidine arm than the conventional care arm—29% and 12%, respectively.

In the azacitidine group, 45% of patients who were dependent on red blood cell transfusions at baseline became transfusion independent, compared with 11% in the conventional care group.

Forty-six percent of patients in the azacitidine arm and 63% in the conventional care arm died.

Grade 3/4 hematologic toxicity (in the azacitidine and conventional care arms, respectively) included neutropenia (91% and 76%), thrombocytopenia (85% and 80%), and anemia (57% and 68%).

Photo by Bill Branson

Azacitidine for injection (Vidaza®) is now available in China.

The nucleoside metabolic inhibitor was approved in China to treat patients with intermediate-2/high-risk myelodysplastic syndromes (MDS), acute myeloid leukemia (AML) with 20% to 30% bone marrow blasts, and chronic myelomonocytic leukemia (CMML).

Azacitidine for injection is marketed in China by BeiGene Ltd. under an exclusive license from Celgene Corporation.

“Vidaza is the only approved hypomethylating agent shown to prolong survival for patients with MDS and the first new treatment for MDS patients approved in China since 2009,” said John V. Oyler, founder, chief executive officer, and chairman of BeiGene.

“We are excited to announce that the first prescription was made in January 2018. From now on, Chinese patients can benefit from Vidaza in hospitals around China.”

Azacitidine was evaluated in a global phase 3 trial of patients with intermediate-2- and high-risk MDS, CMML, or AML (AZA-001). Results from this trial were published in The Lancet Oncology in 2009.

Patients were randomized to receive azacitidine plus best supportive care (BSC, n=179) or conventional care regimens plus BSC (105 to BSC alone, 49 to low-dose cytarabine, and 25 to chemotherapy with cytarabine and anthracycline).

Azacitidine was given subcutaneously at a dose of 75 mg/m² daily for 7 consecutive days every 28 days until disease progression, relapse after response, or unacceptable toxicity.

The median overall survival was 24.5 months with azacitidine, compared to 15 months for patients treated with conventional care regimens.

There was a higher hematologic response rate in the azacitidine arm than the conventional care arm—29% and 12%, respectively.

In the azacitidine group, 45% of patients who were dependent on red blood cell transfusions at baseline became transfusion independent, compared with 11% in the conventional care group.

Forty-six percent of patients in the azacitidine arm and 63% in the conventional care arm died.

Grade 3/4 hematologic toxicity (in the azacitidine and conventional care arms, respectively) included neutropenia (91% and 76%), thrombocytopenia (85% and 80%), and anemia (57% and 68%).

Red blood cells

The US Food and Drug Administration (FDA) has expanded the approved indication for ferumoxytol injection (Feraheme®).

The drug is now approved to treat adults with iron deficiency anemia (IDA) who cannot tolerate or have had an unsatisfactory response to oral iron.

Ferumoxytol injection was previously approved by the FDA to treat IDA in adults with chronic kidney disease.

“Iron deficiency anemia is a serious and under-treated health condition which negatively impacts quality of life for millions of people, many of whom do not benefit from or cannot tolerate oral iron therapy,” said Michael Auerbach, MD, of Georgetown University School of Medicine in Washington, DC.

“Physicians now have a new option for patients who meet the broader ferumoxytol injection indication that can be administered in 15 minutes, providing a gram of iron in 2 doses as few as 3 days apart.”

The expanded approval for ferumoxytol injection was supported by a trio of phase 3 trials. All 3 trials included IDA patients who could not tolerate or had an unsatisfactory response to oral iron.

In the first trial (NCT01114139), researchers compared ferumoxytol injection to placebo.

The second trial (NCT01114204) was a comparison of ferumoxytol injection and iron sucrose.

In the third trial (NCT02694978), researchers compared ferumoxytol injection to ferric carboxymaltose injection (Injectafer®).

Details on these trials are included in the prescribing information for ferumoxytol injection, which is available at www.feraheme.com.

The prescribing information includes a boxed warning detailing the risk of fatal and serious hypersensitivity reactions, including anaphylaxis, in patients receiving ferumoxytol injection.

Ferumoxytol injection is a product of AMAG Pharmaceuticals, Inc.

The company has a patient access support program called AMAG Assist™. Uninsured or underinsured patients who need help paying for their ferumoxytol injection prescription can call 844-635-2624 to see if they qualify for help.

Red blood cells

The US Food and Drug Administration (FDA) has expanded the approved indication for ferumoxytol injection (Feraheme®).

The drug is now approved to treat adults with iron deficiency anemia (IDA) who cannot tolerate or have had an unsatisfactory response to oral iron.

Ferumoxytol injection was previously approved by the FDA to treat IDA in adults with chronic kidney disease.

“Iron deficiency anemia is a serious and under-treated health condition which negatively impacts quality of life for millions of people, many of whom do not benefit from or cannot tolerate oral iron therapy,” said Michael Auerbach, MD, of Georgetown University School of Medicine in Washington, DC.

“Physicians now have a new option for patients who meet the broader ferumoxytol injection indication that can be administered in 15 minutes, providing a gram of iron in 2 doses as few as 3 days apart.”

The expanded approval for ferumoxytol injection was supported by a trio of phase 3 trials. All 3 trials included IDA patients who could not tolerate or had an unsatisfactory response to oral iron.

In the first trial (NCT01114139), researchers compared ferumoxytol injection to placebo.

The second trial (NCT01114204) was a comparison of ferumoxytol injection and iron sucrose.

In the third trial (NCT02694978), researchers compared ferumoxytol injection to ferric carboxymaltose injection (Injectafer®).

Details on these trials are included in the prescribing information for ferumoxytol injection, which is available at www.feraheme.com.

The prescribing information includes a boxed warning detailing the risk of fatal and serious hypersensitivity reactions, including anaphylaxis, in patients receiving ferumoxytol injection.

Ferumoxytol injection is a product of AMAG Pharmaceuticals, Inc.

The company has a patient access support program called AMAG Assist™. Uninsured or underinsured patients who need help paying for their ferumoxytol injection prescription can call 844-635-2624 to see if they qualify for help.

Red blood cells

The US Food and Drug Administration (FDA) has expanded the approved indication for ferumoxytol injection (Feraheme®).

The drug is now approved to treat adults with iron deficiency anemia (IDA) who cannot tolerate or have had an unsatisfactory response to oral iron.

Ferumoxytol injection was previously approved by the FDA to treat IDA in adults with chronic kidney disease.

“Iron deficiency anemia is a serious and under-treated health condition which negatively impacts quality of life for millions of people, many of whom do not benefit from or cannot tolerate oral iron therapy,” said Michael Auerbach, MD, of Georgetown University School of Medicine in Washington, DC.

“Physicians now have a new option for patients who meet the broader ferumoxytol injection indication that can be administered in 15 minutes, providing a gram of iron in 2 doses as few as 3 days apart.”

The expanded approval for ferumoxytol injection was supported by a trio of phase 3 trials. All 3 trials included IDA patients who could not tolerate or had an unsatisfactory response to oral iron.

In the first trial (NCT01114139), researchers compared ferumoxytol injection to placebo.

The second trial (NCT01114204) was a comparison of ferumoxytol injection and iron sucrose.

In the third trial (NCT02694978), researchers compared ferumoxytol injection to ferric carboxymaltose injection (Injectafer®).

Details on these trials are included in the prescribing information for ferumoxytol injection, which is available at www.feraheme.com.

The prescribing information includes a boxed warning detailing the risk of fatal and serious hypersensitivity reactions, including anaphylaxis, in patients receiving ferumoxytol injection.

Ferumoxytol injection is a product of AMAG Pharmaceuticals, Inc.

The company has a patient access support program called AMAG Assist™. Uninsured or underinsured patients who need help paying for their ferumoxytol injection prescription can call 844-635-2624 to see if they qualify for help.

Despite the increased risk for invasive pneumococcal disease, prophylactic antibiotics are underused in children with sickle cell anemia, according to data from more than 2,000 children in six states.

Less than one-fifth (18%) of young children (aged 3 months to 5 years) with sickle cell anemia (SCA) receive at least 300 days of prophylactic antibiotics to reduce their risk of pneumococcal infections, the analysis found.

“Although the effectiveness of daily penicillin prophylaxis has been known for decades, limited evidence indicates low rates of compliance among children,” wrote Sarah L. Reeves, PhD, of the University of Michigan, Ann Arbor, and her colleagues. The report was published in Pediatrics.

The researchers reviewed Medicaid claims for 2,821 children with SCA from the period of 2005-2012 for a total of 5,014 person-years. The data were taken from six states: Florida, Illinois, Louisiana, Michigan, South Carolina, and Texas. Antibiotic prophylaxis was defined as four different treatment protocols: oral penicillin; oral penicillin or erythromycin; oral penicillin, erythromycin, or amoxicillin; or any antibiotic that could protect against Streptococcus pneumoniae.

Overall, the children in the study averaged 1.7 sickle cell disease–related inpatient hospitalizations annually, as well as 13.2 sickle cell disease–related outpatient visits and 3.8 emergency department visits per year.

The proportion of children who received 300 days or more of prophylactic antibiotics varied by state, by year, and by type of treatment. “In this multistate analysis, receipt of antibiotic prophylaxis among children with SCA was persistently low, irrespective of year or state,” the researchers noted.

The odds that a child received 300 days or more of prophylactic antibiotics increased with each outpatient visit, including well child visits and sickle cell disease–related visits (odds ratios 1.08 and 1.01, respectively).

A child in the third quartile of sickle cell disease–related outpatient visits (defined as 17 annual visits) was 15% more likely than was a child in the first quartile (defined as six annual visits) to receive at least 300 days of antibiotics.

The study findings were limited by several factors including potential overestimation of how many children received medication, the researchers said. However, the results suggest the need for practical and effective intervention that targets barriers to treatment adherence, they said.

“Provider-focused strategies to increase adherence could capitalize on the numerous annual outpatient encounters with the health care system that children with SCA are already experiencing,” they wrote.

The study was supported by a grant from the Agency for Healthcare Research and Quality and the Centers for Medicare and Medicaid Services. The researchers reported having no financial disclosures.

SOURCE: Reeves S et al. Pediatrics. 2018;141(3):e20172182. doi: 10.1542/peds.2017-2182.

Despite the increased risk for invasive pneumococcal disease, prophylactic antibiotics are underused in children with sickle cell anemia, according to data from more than 2,000 children in six states.

Less than one-fifth (18%) of young children (aged 3 months to 5 years) with sickle cell anemia (SCA) receive at least 300 days of prophylactic antibiotics to reduce their risk of pneumococcal infections, the analysis found.

“Although the effectiveness of daily penicillin prophylaxis has been known for decades, limited evidence indicates low rates of compliance among children,” wrote Sarah L. Reeves, PhD, of the University of Michigan, Ann Arbor, and her colleagues. The report was published in Pediatrics.

The researchers reviewed Medicaid claims for 2,821 children with SCA from the period of 2005-2012 for a total of 5,014 person-years. The data were taken from six states: Florida, Illinois, Louisiana, Michigan, South Carolina, and Texas. Antibiotic prophylaxis was defined as four different treatment protocols: oral penicillin; oral penicillin or erythromycin; oral penicillin, erythromycin, or amoxicillin; or any antibiotic that could protect against Streptococcus pneumoniae.

Overall, the children in the study averaged 1.7 sickle cell disease–related inpatient hospitalizations annually, as well as 13.2 sickle cell disease–related outpatient visits and 3.8 emergency department visits per year.

The proportion of children who received 300 days or more of prophylactic antibiotics varied by state, by year, and by type of treatment. “In this multistate analysis, receipt of antibiotic prophylaxis among children with SCA was persistently low, irrespective of year or state,” the researchers noted.

The odds that a child received 300 days or more of prophylactic antibiotics increased with each outpatient visit, including well child visits and sickle cell disease–related visits (odds ratios 1.08 and 1.01, respectively).

A child in the third quartile of sickle cell disease–related outpatient visits (defined as 17 annual visits) was 15% more likely than was a child in the first quartile (defined as six annual visits) to receive at least 300 days of antibiotics.

The study findings were limited by several factors including potential overestimation of how many children received medication, the researchers said. However, the results suggest the need for practical and effective intervention that targets barriers to treatment adherence, they said.

“Provider-focused strategies to increase adherence could capitalize on the numerous annual outpatient encounters with the health care system that children with SCA are already experiencing,” they wrote.

The study was supported by a grant from the Agency for Healthcare Research and Quality and the Centers for Medicare and Medicaid Services. The researchers reported having no financial disclosures.

SOURCE: Reeves S et al. Pediatrics. 2018;141(3):e20172182. doi: 10.1542/peds.2017-2182.

Despite the increased risk for invasive pneumococcal disease, prophylactic antibiotics are underused in children with sickle cell anemia, according to data from more than 2,000 children in six states.

Less than one-fifth (18%) of young children (aged 3 months to 5 years) with sickle cell anemia (SCA) receive at least 300 days of prophylactic antibiotics to reduce their risk of pneumococcal infections, the analysis found.

“Although the effectiveness of daily penicillin prophylaxis has been known for decades, limited evidence indicates low rates of compliance among children,” wrote Sarah L. Reeves, PhD, of the University of Michigan, Ann Arbor, and her colleagues. The report was published in Pediatrics.

The researchers reviewed Medicaid claims for 2,821 children with SCA from the period of 2005-2012 for a total of 5,014 person-years. The data were taken from six states: Florida, Illinois, Louisiana, Michigan, South Carolina, and Texas. Antibiotic prophylaxis was defined as four different treatment protocols: oral penicillin; oral penicillin or erythromycin; oral penicillin, erythromycin, or amoxicillin; or any antibiotic that could protect against Streptococcus pneumoniae.

Overall, the children in the study averaged 1.7 sickle cell disease–related inpatient hospitalizations annually, as well as 13.2 sickle cell disease–related outpatient visits and 3.8 emergency department visits per year.

The proportion of children who received 300 days or more of prophylactic antibiotics varied by state, by year, and by type of treatment. “In this multistate analysis, receipt of antibiotic prophylaxis among children with SCA was persistently low, irrespective of year or state,” the researchers noted.

The odds that a child received 300 days or more of prophylactic antibiotics increased with each outpatient visit, including well child visits and sickle cell disease–related visits (odds ratios 1.08 and 1.01, respectively).

A child in the third quartile of sickle cell disease–related outpatient visits (defined as 17 annual visits) was 15% more likely than was a child in the first quartile (defined as six annual visits) to receive at least 300 days of antibiotics.

The study findings were limited by several factors including potential overestimation of how many children received medication, the researchers said. However, the results suggest the need for practical and effective intervention that targets barriers to treatment adherence, they said.

“Provider-focused strategies to increase adherence could capitalize on the numerous annual outpatient encounters with the health care system that children with SCA are already experiencing,” they wrote.

The study was supported by a grant from the Agency for Healthcare Research and Quality and the Centers for Medicare and Medicaid Services. The researchers reported having no financial disclosures.

SOURCE: Reeves S et al. Pediatrics. 2018;141(3):e20172182. doi: 10.1542/peds.2017-2182.

Image from NIAID

The US Food and Drug Administration (FDA) has placed BPX-501, a T-cell therapy being evaluated in patients who undergo haploidentical hematopoietic stem cell transplants (HSCTs), on clinical hold.

Three cases of encephalopathy possibly related to BPX-501 prompted the agency to impose the hold.

Bellicum Pharmaceuticals is the developer of BPX-501, and the company was conducting 4 trials in the US in children and adults with hematologic disorders.

The BPX-501 registration trial in Europe is not affected by the clinical hold.

BPX-501 is designed to fight infection, support engraftment, prevent disease relapse, and potentially stop graft-versus-host disease (GVHD) should it occur.

BPX-501 contains a safety switch, CaspaCIDe®, that can be activated with the administration of rimiducid to kill the toxic T cells in the event of GVHD.

The 3 cases of encephalopathy are complex, according to a company press release, and have confounding factors. These include prior failed transplants, prior history of immunodeficiency, concurrent infection, and administration of rimiducid in combination with other medications.

Encephalopathy had not emerged as an adverse event in 240 patients treated with the cell therapy, until now.

BPX-501 had produced encouraging results, according to trial data presented at EHA 2017 and ASH 2017 (abstract 211*).

In this trial, 112 pediatric patients were transfused with BPX-501 cells about 2 weeks after transplant. Patients had acute leukemia (n=53), primary immune deficiencies (n=26), erythroid disorders (n=17), Fanconi anemia (n=7), and other diseases (n=9).

Investigators reported that infused cells expanded and persisted, with peak expansion reached at 9 months after infusion. Investigators continued to detect BPX-501 cells after 2 years.

The European Commission granted BPX-501 orphan drug designation for the agent for treatment in HSCT, and for the activator agent rimiducid for the treatment of GVHD.

And the FDA had granted the agents orphan drug status as a combination replacement T-cell therapy for the treatment of immunodeficiency and GVHD after HSCT.

Bellicum says it is working with the FDA to evaluate the risk of encephalopathy in patients receiving BPX-501.

* Data in the abstract were updated in the oral presentation and reported on the company’s website.

Image from NIAID

The US Food and Drug Administration (FDA) has placed BPX-501, a T-cell therapy being evaluated in patients who undergo haploidentical hematopoietic stem cell transplants (HSCTs), on clinical hold.

Three cases of encephalopathy possibly related to BPX-501 prompted the agency to impose the hold.

Bellicum Pharmaceuticals is the developer of BPX-501, and the company was conducting 4 trials in the US in children and adults with hematologic disorders.

The BPX-501 registration trial in Europe is not affected by the clinical hold.

BPX-501 is designed to fight infection, support engraftment, prevent disease relapse, and potentially stop graft-versus-host disease (GVHD) should it occur.

BPX-501 contains a safety switch, CaspaCIDe®, that can be activated with the administration of rimiducid to kill the toxic T cells in the event of GVHD.

The 3 cases of encephalopathy are complex, according to a company press release, and have confounding factors. These include prior failed transplants, prior history of immunodeficiency, concurrent infection, and administration of rimiducid in combination with other medications.

Encephalopathy had not emerged as an adverse event in 240 patients treated with the cell therapy, until now.

BPX-501 had produced encouraging results, according to trial data presented at EHA 2017 and ASH 2017 (abstract 211*).

In this trial, 112 pediatric patients were transfused with BPX-501 cells about 2 weeks after transplant. Patients had acute leukemia (n=53), primary immune deficiencies (n=26), erythroid disorders (n=17), Fanconi anemia (n=7), and other diseases (n=9).

Investigators reported that infused cells expanded and persisted, with peak expansion reached at 9 months after infusion. Investigators continued to detect BPX-501 cells after 2 years.

The European Commission granted BPX-501 orphan drug designation for the agent for treatment in HSCT, and for the activator agent rimiducid for the treatment of GVHD.

And the FDA had granted the agents orphan drug status as a combination replacement T-cell therapy for the treatment of immunodeficiency and GVHD after HSCT.

Bellicum says it is working with the FDA to evaluate the risk of encephalopathy in patients receiving BPX-501.

* Data in the abstract were updated in the oral presentation and reported on the company’s website.

Image from NIAID

The US Food and Drug Administration (FDA) has placed BPX-501, a T-cell therapy being evaluated in patients who undergo haploidentical hematopoietic stem cell transplants (HSCTs), on clinical hold.

Three cases of encephalopathy possibly related to BPX-501 prompted the agency to impose the hold.

Bellicum Pharmaceuticals is the developer of BPX-501, and the company was conducting 4 trials in the US in children and adults with hematologic disorders.

The BPX-501 registration trial in Europe is not affected by the clinical hold.

BPX-501 is designed to fight infection, support engraftment, prevent disease relapse, and potentially stop graft-versus-host disease (GVHD) should it occur.

BPX-501 contains a safety switch, CaspaCIDe®, that can be activated with the administration of rimiducid to kill the toxic T cells in the event of GVHD.

The 3 cases of encephalopathy are complex, according to a company press release, and have confounding factors. These include prior failed transplants, prior history of immunodeficiency, concurrent infection, and administration of rimiducid in combination with other medications.

Encephalopathy had not emerged as an adverse event in 240 patients treated with the cell therapy, until now.

BPX-501 had produced encouraging results, according to trial data presented at EHA 2017 and ASH 2017 (abstract 211*).

In this trial, 112 pediatric patients were transfused with BPX-501 cells about 2 weeks after transplant. Patients had acute leukemia (n=53), primary immune deficiencies (n=26), erythroid disorders (n=17), Fanconi anemia (n=7), and other diseases (n=9).

Investigators reported that infused cells expanded and persisted, with peak expansion reached at 9 months after infusion. Investigators continued to detect BPX-501 cells after 2 years.

The European Commission granted BPX-501 orphan drug designation for the agent for treatment in HSCT, and for the activator agent rimiducid for the treatment of GVHD.

And the FDA had granted the agents orphan drug status as a combination replacement T-cell therapy for the treatment of immunodeficiency and GVHD after HSCT.

Bellicum says it is working with the FDA to evaluate the risk of encephalopathy in patients receiving BPX-501.

* Data in the abstract were updated in the oral presentation and reported on the company’s website.