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        Safety and efficacy of bendamustine in the conditioning regimen for autologous stem cell transplantation in patients with relapsed/refractory lymphoma

        Munira Shabbir-Moosajee,Samad Jehangir,Sobiya Sawani,Tariq Muhammed,Natasha Ali,Usman Sheikh,Salman Adil 대한혈액학회 2019 Blood Research Vol.54 No.2

        BackgroundBendamustine is an attractive option for the management of both de novo and relapsed lymphomas. It is being increasingly used in the conditioning regimen for autologous stem cell transplantation (SCT) and can be an alternative to the traditionally-used carmustine. In this study, we aimed to determine the safety and efficacy of bendamustine in the con-ditioning regimen for autologous SCT in refractory/relapsed lymphomas.MethodsWe designed a descriptive study to evaluate bendamustine in combination with etopo-side, cytarabine, and melphalan (BeEAM) in the conditioning regimen for autologous SCT.ResultsFourteen patients (median age, 28 yr) with Hodgkin’s lymphoma (HL) (N=8), non-Hodgkin’s lymphomas (NHL) (N=5), or peripheral T-cell lymphoma, not otherwise specified (PTCL NOS) (N=1) were included in the study. A median number of 5.95×106CD34+ cells/kg were transfused. Median times to absolute neutrophil count and platelet engraftment were 17 days and 24 days, respectively. The 100-day transplantation mortal-ity rate was 28% (4 patients). Eight patients (57.14%) had GII-III acute kidney injury, four patients (28.5%) had GIII-IV hyperbilirubinemia, and twelve patients (85%) had GII-III diarrhea. After 3 months, 37% (5 patients) and 21.4% (3 patients) demonstrated complete response and partial response, respectively. The median follow-up was 5.5 months (15 days‒19 mo). At the final follow-up, 7 patients (50%) were alive and in CR.ConclusionOur study showed that bendamustine is a potentially toxic agent in the conditioning regi-men for autologous SCT, resulting in significant liver, kidney, and gastrointestinal toxicity. Further studies are required to assess its safety and efficacy at reduced doses.

      • Sporadic Early Onset Colorectal Cancer in Pakistan: a Case-Control Analysis of Microsatellite Instability

        Siddique, Sabeehuddin,Tariq, Kanwal,Rafiq, Sobia,Raheem, Ahmed,Ahmed, Rashida,Shabbir-Moosajee, Munira,Ghias, Kulsoom Asian Pacific Journal of Cancer Prevention 2016 Asian Pacific journal of cancer prevention Vol.17 No.5

        Background: Early onset sporadic colorectal cancer (CRC) is a biologically and clinically distinct entity hypothesized to exhibit differences in histological features and microsatellite instability (MSI) as compared to typical onset CRC. This study compared the MSI status, mismatch repair enzyme deficiency and clinicopathological features of early onset (aged ${\leq}45$ years) with controls (>45 years). Materials and Methods: A total of 30 cases and 30 controls were analyzed for MSI status using the Bethesda marker panel. Using antibodies against hMLH1, hMSH2 and hMSH6, mismatch repair protein expression was assessed by immunohistochemistry. Molecular characteristics were correlated with clinicopathological features. Results: The early onset sporadic CRCs were significantly more poorly differentiated tumors, with higher N2 nodal involvement and greater frequency of signet ring phenotype than the typical onset cases. MSI was observed in 18/30 cases, with 12/18 designated as MSI-high (MSI-H) and 6/18 designated as MSI-low (MSI-L). In the control group, 14 patients exhibited MSI, with 7 MSI-H and 7 MSI-L. MSI tumors in both cases and controls exhibited loss of hMLH1, hMSH2 and hMSH6. MSS tumors did not exhibit loss of expression of MMR proteins, except hMLH1 protein in 3 controls. No statistically significant difference was noted in MSI status or expression of MMR proteins in cases versus controls. Conclusions: Microsatellite status is comparable between early and typical onset sporadic CRC patients in Pakistan suggesting that differences in clinicopathological features between these two subsets are attributable to other molecular mechanisms.

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