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Allogeneic stem cell transplantation (SCT) remains the only potential curable option for patients with myelodysplastic syndromes (MDS). While MDS mainly occurs in older patients, MDS does occur in younger patients and prior studies have suggested better overall survival (OS) for younger patients undergoing allogeneic SCT. Shimomura et al (BMT 2021) analyzed the outcome of 645 patients aged 16-39 years old who received allogeneic SCT in Japan. In this multicenter retrospective analysis, 3 year OS was 71%. In the cohort, 37% of patients had either intermediate-2 or high risk by IPSS, 41% had active disease prior to SCT, and 10% had secondary MDS. In a multivariate analysis, active disease status, poor cytogenetic risk, and transplant other than from related donor were associated with poor 3 year OS. Cumulative 3 year relapse was 11% and 3 year non-relapse mortality was 19%, which is lower than those of older patients with MDS which ranges from 30-40%. Limitations from this analysis are lack of genetic mutation data, as well as lack of incorporation of prior MDS directed therapy with outcome analysis, however this analysis from a large retrospective cohort provides valuable information regarding outcome in young patients with MDS.
Use of melphalan in multiple myeloma is associated with increased risk of developing MDS and acute myeloid leukemia (AML). Jonsdottir et al (European Journal of Hematology) reported results of a large population-based study using the Swedish cancer registry to determine relationship of exposure to melphalan treatment for multiple myeloma and development of subsequent MDS and AML. Out of 26,627 patients with multiple myeloma in the Swedish cancer registry, 0.5% (124) patients developed subsequent MDS or AML. The median time from multiple myeloma diagnosis to MDS or AML diagnosis was 3.8 years. There was about threefold higher cumulative exposure to melphalan among those who developed MDS or AML compared to those who did not develop MDS or AML (OR=2.8, 95% CI 1.7-5.2, P < 0.001). There was no difference among the groups in exposure and dosing of radiation therapy, cumulative dose of cyclophosphamide, or doxorubicine. This large population-based study confirms the association between melphalan therapy and development of MDS/AML.
Febrile neutropenia is a common complication for neutropenic patients undergoing therapy. Patients who develop febrile neutropenia are treated with empiric broad-spectrum antibiotics, however there is conflicting recommended duration of antimicrobial treatment in absence of evidence of bacterial infection. The Infectious Disease Society of America recommends antibiotic treatment until marrow recovery, while the European Conference of Infections in Leukemia guidelines suggest consideration of discontinuation after 72 hours if the patient is hemodynamically stable and afebrile for 48 hours. Schauwvlieghe et al (EClinical Medicine 2021) compared the outcome of MDS and AML patients with febrile neutropenia during induction chemotherapy receiving a shortened 3 day empiric antibiotic therapy in absence of documented infection to those receiving antibiotics until neutrophil recovery in a retrospective comparative cohort study in two hospitals in the HOVON network. The shorted antibiotic group received a median of 9 days of antibiotics, compared to 19 days. The primary endpoint was the rate of serious medical complications; there was no statistical difference between the two groups (12.5% for shortened antibiotics vs 8.9% for prolonged antibiotics, P = 0.17). There was no difference in serious medical complications when adjusting for age, AML risk, non-pulmonary HCT-CI score, and year of admission. There was also no significant difference in infection-related 30-day mortality among the two groups. This study suggests that for patients who develop febrile neutropenia while receiving induction chemotherapy, it may be safe to consider stopping antibiotics after 3 days in absence of infection. A prospective trial should be considered to further evaluate the safety of shortened antibiotic course.
Allogeneic stem cell transplantation (SCT) remains the only potential curable option for patients with myelodysplastic syndromes (MDS). While MDS mainly occurs in older patients, MDS does occur in younger patients and prior studies have suggested better overall survival (OS) for younger patients undergoing allogeneic SCT. Shimomura et al (BMT 2021) analyzed the outcome of 645 patients aged 16-39 years old who received allogeneic SCT in Japan. In this multicenter retrospective analysis, 3 year OS was 71%. In the cohort, 37% of patients had either intermediate-2 or high risk by IPSS, 41% had active disease prior to SCT, and 10% had secondary MDS. In a multivariate analysis, active disease status, poor cytogenetic risk, and transplant other than from related donor were associated with poor 3 year OS. Cumulative 3 year relapse was 11% and 3 year non-relapse mortality was 19%, which is lower than those of older patients with MDS which ranges from 30-40%. Limitations from this analysis are lack of genetic mutation data, as well as lack of incorporation of prior MDS directed therapy with outcome analysis, however this analysis from a large retrospective cohort provides valuable information regarding outcome in young patients with MDS.
Use of melphalan in multiple myeloma is associated with increased risk of developing MDS and acute myeloid leukemia (AML). Jonsdottir et al (European Journal of Hematology) reported results of a large population-based study using the Swedish cancer registry to determine relationship of exposure to melphalan treatment for multiple myeloma and development of subsequent MDS and AML. Out of 26,627 patients with multiple myeloma in the Swedish cancer registry, 0.5% (124) patients developed subsequent MDS or AML. The median time from multiple myeloma diagnosis to MDS or AML diagnosis was 3.8 years. There was about threefold higher cumulative exposure to melphalan among those who developed MDS or AML compared to those who did not develop MDS or AML (OR=2.8, 95% CI 1.7-5.2, P < 0.001). There was no difference among the groups in exposure and dosing of radiation therapy, cumulative dose of cyclophosphamide, or doxorubicine. This large population-based study confirms the association between melphalan therapy and development of MDS/AML.
Febrile neutropenia is a common complication for neutropenic patients undergoing therapy. Patients who develop febrile neutropenia are treated with empiric broad-spectrum antibiotics, however there is conflicting recommended duration of antimicrobial treatment in absence of evidence of bacterial infection. The Infectious Disease Society of America recommends antibiotic treatment until marrow recovery, while the European Conference of Infections in Leukemia guidelines suggest consideration of discontinuation after 72 hours if the patient is hemodynamically stable and afebrile for 48 hours. Schauwvlieghe et al (EClinical Medicine 2021) compared the outcome of MDS and AML patients with febrile neutropenia during induction chemotherapy receiving a shortened 3 day empiric antibiotic therapy in absence of documented infection to those receiving antibiotics until neutrophil recovery in a retrospective comparative cohort study in two hospitals in the HOVON network. The shorted antibiotic group received a median of 9 days of antibiotics, compared to 19 days. The primary endpoint was the rate of serious medical complications; there was no statistical difference between the two groups (12.5% for shortened antibiotics vs 8.9% for prolonged antibiotics, P = 0.17). There was no difference in serious medical complications when adjusting for age, AML risk, non-pulmonary HCT-CI score, and year of admission. There was also no significant difference in infection-related 30-day mortality among the two groups. This study suggests that for patients who develop febrile neutropenia while receiving induction chemotherapy, it may be safe to consider stopping antibiotics after 3 days in absence of infection. A prospective trial should be considered to further evaluate the safety of shortened antibiotic course.
Allogeneic stem cell transplantation (SCT) remains the only potential curable option for patients with myelodysplastic syndromes (MDS). While MDS mainly occurs in older patients, MDS does occur in younger patients and prior studies have suggested better overall survival (OS) for younger patients undergoing allogeneic SCT. Shimomura et al (BMT 2021) analyzed the outcome of 645 patients aged 16-39 years old who received allogeneic SCT in Japan. In this multicenter retrospective analysis, 3 year OS was 71%. In the cohort, 37% of patients had either intermediate-2 or high risk by IPSS, 41% had active disease prior to SCT, and 10% had secondary MDS. In a multivariate analysis, active disease status, poor cytogenetic risk, and transplant other than from related donor were associated with poor 3 year OS. Cumulative 3 year relapse was 11% and 3 year non-relapse mortality was 19%, which is lower than those of older patients with MDS which ranges from 30-40%. Limitations from this analysis are lack of genetic mutation data, as well as lack of incorporation of prior MDS directed therapy with outcome analysis, however this analysis from a large retrospective cohort provides valuable information regarding outcome in young patients with MDS.
Use of melphalan in multiple myeloma is associated with increased risk of developing MDS and acute myeloid leukemia (AML). Jonsdottir et al (European Journal of Hematology) reported results of a large population-based study using the Swedish cancer registry to determine relationship of exposure to melphalan treatment for multiple myeloma and development of subsequent MDS and AML. Out of 26,627 patients with multiple myeloma in the Swedish cancer registry, 0.5% (124) patients developed subsequent MDS or AML. The median time from multiple myeloma diagnosis to MDS or AML diagnosis was 3.8 years. There was about threefold higher cumulative exposure to melphalan among those who developed MDS or AML compared to those who did not develop MDS or AML (OR=2.8, 95% CI 1.7-5.2, P < 0.001). There was no difference among the groups in exposure and dosing of radiation therapy, cumulative dose of cyclophosphamide, or doxorubicine. This large population-based study confirms the association between melphalan therapy and development of MDS/AML.
Febrile neutropenia is a common complication for neutropenic patients undergoing therapy. Patients who develop febrile neutropenia are treated with empiric broad-spectrum antibiotics, however there is conflicting recommended duration of antimicrobial treatment in absence of evidence of bacterial infection. The Infectious Disease Society of America recommends antibiotic treatment until marrow recovery, while the European Conference of Infections in Leukemia guidelines suggest consideration of discontinuation after 72 hours if the patient is hemodynamically stable and afebrile for 48 hours. Schauwvlieghe et al (EClinical Medicine 2021) compared the outcome of MDS and AML patients with febrile neutropenia during induction chemotherapy receiving a shortened 3 day empiric antibiotic therapy in absence of documented infection to those receiving antibiotics until neutrophil recovery in a retrospective comparative cohort study in two hospitals in the HOVON network. The shorted antibiotic group received a median of 9 days of antibiotics, compared to 19 days. The primary endpoint was the rate of serious medical complications; there was no statistical difference between the two groups (12.5% for shortened antibiotics vs 8.9% for prolonged antibiotics, P = 0.17). There was no difference in serious medical complications when adjusting for age, AML risk, non-pulmonary HCT-CI score, and year of admission. There was also no significant difference in infection-related 30-day mortality among the two groups. This study suggests that for patients who develop febrile neutropenia while receiving induction chemotherapy, it may be safe to consider stopping antibiotics after 3 days in absence of infection. A prospective trial should be considered to further evaluate the safety of shortened antibiotic course.