Comparing Outcomes and Toxicities With Standard and Reduced Dose Melphalan in Autologous Stem Cell Transplant Patients With Multiple Myeloma

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BACKGROUND

Multiple myeloma, an incurable plasma cell malignancy, has an average age of diagnosis over 65 years. For transplant-eligible patients, high-dose melphalan 200 mg/m2 (MEL200), followed by autologous stem cell rescue (ASCR) is the standard in consolidation therapy. Most clinical trials evaluating MEL200 with ASCR excluded patients over 65 due to concerns for toxicity and treatment-related mortality, leading to use of reduced dose melphalan 140 mg/m2 (MEL140) in clinical practice for older patients. As this dose has limited studies surrounding its reduction, the purpose of this study was to compare outcomes and toxicities of MEL140 in patients over the age of 65 to MEL200 in patients 65 and under.

METHODS

This single-center institutional review board approved retrospective study was conducted at VA Tennessee Valley Healthcare System. All multiple myeloma patients greater than 18 years of age who received melphalan with ASCR from January 1, 2018, to December 31, 2021, were included. Patients were divided into two arms: age < 65 treated with MEL200 and age >65 treated with MEL140. The primary endpoint was oneyear progression-free survival (PFS). The secondary endpoints were one-year overall survival (OS), treatment related mortality, time to neutrophil engraftment, and toxicities including febrile neutropenia, diarrhea, mucositis, infection, and intensive care unit transfers.

RESULTS

A total of 222 patients were included, 114 patients in the MEL200 arm and 108 patients in the MEL140 arm. The primary endpoint of one-year PFS had no significant difference, with 103 (90.4%) patients in the MEL200 group compared to 99 (91.7%) patients in the MEL140 group (p=0.732). Similarly, there was no statistically significant difference in the secondary endpoint of one-year OS with 112 (98.3%) patients in the MEL200 group compared to 106 (98.2%) in the MEL140 group (p=0.956). Toxicities were similar; however, grade 3 mucositis was higher in the MEL200 arm.

CONCLUSIONS

Our study found no difference in oneyear PFS or one-year OS when comparing MEL140 to MEL200 with minimal differences in regimen-related toxicities. Although not powered to detect statistical difference, results suggests that dose reduction with MEL140 in patients >65 years does not impact one-year PFS when compared to patients <65 receiving standard MEL200.

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BACKGROUND

Multiple myeloma, an incurable plasma cell malignancy, has an average age of diagnosis over 65 years. For transplant-eligible patients, high-dose melphalan 200 mg/m2 (MEL200), followed by autologous stem cell rescue (ASCR) is the standard in consolidation therapy. Most clinical trials evaluating MEL200 with ASCR excluded patients over 65 due to concerns for toxicity and treatment-related mortality, leading to use of reduced dose melphalan 140 mg/m2 (MEL140) in clinical practice for older patients. As this dose has limited studies surrounding its reduction, the purpose of this study was to compare outcomes and toxicities of MEL140 in patients over the age of 65 to MEL200 in patients 65 and under.

METHODS

This single-center institutional review board approved retrospective study was conducted at VA Tennessee Valley Healthcare System. All multiple myeloma patients greater than 18 years of age who received melphalan with ASCR from January 1, 2018, to December 31, 2021, were included. Patients were divided into two arms: age < 65 treated with MEL200 and age >65 treated with MEL140. The primary endpoint was oneyear progression-free survival (PFS). The secondary endpoints were one-year overall survival (OS), treatment related mortality, time to neutrophil engraftment, and toxicities including febrile neutropenia, diarrhea, mucositis, infection, and intensive care unit transfers.

RESULTS

A total of 222 patients were included, 114 patients in the MEL200 arm and 108 patients in the MEL140 arm. The primary endpoint of one-year PFS had no significant difference, with 103 (90.4%) patients in the MEL200 group compared to 99 (91.7%) patients in the MEL140 group (p=0.732). Similarly, there was no statistically significant difference in the secondary endpoint of one-year OS with 112 (98.3%) patients in the MEL200 group compared to 106 (98.2%) in the MEL140 group (p=0.956). Toxicities were similar; however, grade 3 mucositis was higher in the MEL200 arm.

CONCLUSIONS

Our study found no difference in oneyear PFS or one-year OS when comparing MEL140 to MEL200 with minimal differences in regimen-related toxicities. Although not powered to detect statistical difference, results suggests that dose reduction with MEL140 in patients >65 years does not impact one-year PFS when compared to patients <65 receiving standard MEL200.

BACKGROUND

Multiple myeloma, an incurable plasma cell malignancy, has an average age of diagnosis over 65 years. For transplant-eligible patients, high-dose melphalan 200 mg/m2 (MEL200), followed by autologous stem cell rescue (ASCR) is the standard in consolidation therapy. Most clinical trials evaluating MEL200 with ASCR excluded patients over 65 due to concerns for toxicity and treatment-related mortality, leading to use of reduced dose melphalan 140 mg/m2 (MEL140) in clinical practice for older patients. As this dose has limited studies surrounding its reduction, the purpose of this study was to compare outcomes and toxicities of MEL140 in patients over the age of 65 to MEL200 in patients 65 and under.

METHODS

This single-center institutional review board approved retrospective study was conducted at VA Tennessee Valley Healthcare System. All multiple myeloma patients greater than 18 years of age who received melphalan with ASCR from January 1, 2018, to December 31, 2021, were included. Patients were divided into two arms: age < 65 treated with MEL200 and age >65 treated with MEL140. The primary endpoint was oneyear progression-free survival (PFS). The secondary endpoints were one-year overall survival (OS), treatment related mortality, time to neutrophil engraftment, and toxicities including febrile neutropenia, diarrhea, mucositis, infection, and intensive care unit transfers.

RESULTS

A total of 222 patients were included, 114 patients in the MEL200 arm and 108 patients in the MEL140 arm. The primary endpoint of one-year PFS had no significant difference, with 103 (90.4%) patients in the MEL200 group compared to 99 (91.7%) patients in the MEL140 group (p=0.732). Similarly, there was no statistically significant difference in the secondary endpoint of one-year OS with 112 (98.3%) patients in the MEL200 group compared to 106 (98.2%) in the MEL140 group (p=0.956). Toxicities were similar; however, grade 3 mucositis was higher in the MEL200 arm.

CONCLUSIONS

Our study found no difference in oneyear PFS or one-year OS when comparing MEL140 to MEL200 with minimal differences in regimen-related toxicities. Although not powered to detect statistical difference, results suggests that dose reduction with MEL140 in patients >65 years does not impact one-year PFS when compared to patients <65 receiving standard MEL200.

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Impact of Pharmacist-Driven Telemedicine Services in Hematopoietic Stem Cell Transplant (HSCT) Long-term Care Clinic in a Veteran Population

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Thu, 12/15/2022 - 14:26

Background

Patients undergoing allogeneic hematopoietic stem cell transplant (HSCT) are high-risk patients with complex medication regimens, including anti-rejection medications, infection prophylaxis, other post-transplant complication prophylaxis in addition to their chronic medications for co-morbid conditions. At the VA Tennessee Valley Healthcare System (TVHS), there are 3 stages of care once a patient receives an allogeneic transplant: inpatient transplant (through engraftment), outpatient posttransplant (through day +100), and long-term care (LTC) transplant (post-departure from the transplant facility). Currently, TVHS has 2 Clinical Pharmacist Practitioners (CPP) involved in the inpatient and outpatient settings. The purpose of this quality improvement initiative was to evaluate the impact of pharmacist services on continuity of care for longterm HSCT patients, vaccine completion rates, and immunosuppression/chemotherapy monitoring.

Methods

Patients were identified for enrollment based on a referral from a CPP, nurse practitioner (NP), or physician (MD). Patients with a history of allogeneic transplant were automatically referred from the CPP at departure and scheduled for a 2-week and 6-week post-departure visit. During these visits, the pharmacist conducted a medication reconciliation, assessed for medication errors or lapses in therapy, and provided medication counseling deemed necessary by clinical judgement. In addition to these 2 medication reconciliation visits, patients were also automatically scheduled for a vaccine assessment 6-months post-transplant. Pharmacy interventions from these visits were recorded in pre-specified categories. In addition to these predetermined visits, patients with complex medication regimens or undergoing significant changes could also be referred by either the NP or MD.

Results

A total of 18 patients were enrolled in the CPP clinic from October 2021 through May 2022. During this period, 42 visits were completed as each patient was seen multiple times (mean number of visits 1.8). A total of 16 medication errors/lapses were identified and addressed. The most common types of interventions included medication reconciliation (42), adherence counseling (39), general medication interventions (26), and vaccine interventions (20).

Conclusions

This pharmacist-driven telemedicine service incorporated into the long-term care HSCT clinic demonstrated benefit in identifying and addressing medication errors/lapses. Further study including the impact on patient outcomes such as hospital readmissions post-transplant, could strengthen the importance of pharmacy involvement in this setting.

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Background

Patients undergoing allogeneic hematopoietic stem cell transplant (HSCT) are high-risk patients with complex medication regimens, including anti-rejection medications, infection prophylaxis, other post-transplant complication prophylaxis in addition to their chronic medications for co-morbid conditions. At the VA Tennessee Valley Healthcare System (TVHS), there are 3 stages of care once a patient receives an allogeneic transplant: inpatient transplant (through engraftment), outpatient posttransplant (through day +100), and long-term care (LTC) transplant (post-departure from the transplant facility). Currently, TVHS has 2 Clinical Pharmacist Practitioners (CPP) involved in the inpatient and outpatient settings. The purpose of this quality improvement initiative was to evaluate the impact of pharmacist services on continuity of care for longterm HSCT patients, vaccine completion rates, and immunosuppression/chemotherapy monitoring.

Methods

Patients were identified for enrollment based on a referral from a CPP, nurse practitioner (NP), or physician (MD). Patients with a history of allogeneic transplant were automatically referred from the CPP at departure and scheduled for a 2-week and 6-week post-departure visit. During these visits, the pharmacist conducted a medication reconciliation, assessed for medication errors or lapses in therapy, and provided medication counseling deemed necessary by clinical judgement. In addition to these 2 medication reconciliation visits, patients were also automatically scheduled for a vaccine assessment 6-months post-transplant. Pharmacy interventions from these visits were recorded in pre-specified categories. In addition to these predetermined visits, patients with complex medication regimens or undergoing significant changes could also be referred by either the NP or MD.

Results

A total of 18 patients were enrolled in the CPP clinic from October 2021 through May 2022. During this period, 42 visits were completed as each patient was seen multiple times (mean number of visits 1.8). A total of 16 medication errors/lapses were identified and addressed. The most common types of interventions included medication reconciliation (42), adherence counseling (39), general medication interventions (26), and vaccine interventions (20).

Conclusions

This pharmacist-driven telemedicine service incorporated into the long-term care HSCT clinic demonstrated benefit in identifying and addressing medication errors/lapses. Further study including the impact on patient outcomes such as hospital readmissions post-transplant, could strengthen the importance of pharmacy involvement in this setting.

Background

Patients undergoing allogeneic hematopoietic stem cell transplant (HSCT) are high-risk patients with complex medication regimens, including anti-rejection medications, infection prophylaxis, other post-transplant complication prophylaxis in addition to their chronic medications for co-morbid conditions. At the VA Tennessee Valley Healthcare System (TVHS), there are 3 stages of care once a patient receives an allogeneic transplant: inpatient transplant (through engraftment), outpatient posttransplant (through day +100), and long-term care (LTC) transplant (post-departure from the transplant facility). Currently, TVHS has 2 Clinical Pharmacist Practitioners (CPP) involved in the inpatient and outpatient settings. The purpose of this quality improvement initiative was to evaluate the impact of pharmacist services on continuity of care for longterm HSCT patients, vaccine completion rates, and immunosuppression/chemotherapy monitoring.

Methods

Patients were identified for enrollment based on a referral from a CPP, nurse practitioner (NP), or physician (MD). Patients with a history of allogeneic transplant were automatically referred from the CPP at departure and scheduled for a 2-week and 6-week post-departure visit. During these visits, the pharmacist conducted a medication reconciliation, assessed for medication errors or lapses in therapy, and provided medication counseling deemed necessary by clinical judgement. In addition to these 2 medication reconciliation visits, patients were also automatically scheduled for a vaccine assessment 6-months post-transplant. Pharmacy interventions from these visits were recorded in pre-specified categories. In addition to these predetermined visits, patients with complex medication regimens or undergoing significant changes could also be referred by either the NP or MD.

Results

A total of 18 patients were enrolled in the CPP clinic from October 2021 through May 2022. During this period, 42 visits were completed as each patient was seen multiple times (mean number of visits 1.8). A total of 16 medication errors/lapses were identified and addressed. The most common types of interventions included medication reconciliation (42), adherence counseling (39), general medication interventions (26), and vaccine interventions (20).

Conclusions

This pharmacist-driven telemedicine service incorporated into the long-term care HSCT clinic demonstrated benefit in identifying and addressing medication errors/lapses. Further study including the impact on patient outcomes such as hospital readmissions post-transplant, could strengthen the importance of pharmacy involvement in this setting.

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