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74
result(s) for
"Bhatt, Vijaya Raj"
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Impact of pre-transplant induction and consolidation cycles on AML allogeneic transplant outcomes: a CIBMTR analysis in 3113 AML patients
by
Lin, Richard
,
Perez, Miguel Angel Diaz
,
Cerny, Jan
in
Allografts
,
Consolidation
,
Hematopoietic stem cells
2023
We investigated the impact of the number of induction/consolidation cycles on outcomes of 3113 adult AML patients who received allogeneic hematopoietic cell transplantation (allo-HCT) between 2008 and 2019. Patients received allo-HCT using myeloablative (MAC) or reduced-intensity (RIC) conditioning in first complete remission (CR) or with primary induction failure (PIF). Patients who received MAC allo-HCT in CR after 1 induction cycle had 1.3-fold better overall survival (OS) than 2 cycles to CR and 1.47-fold better than ≥3 cycles. OS after CR in 2 or ≥3 cycles was similar. Relapse risk was 1.65-fold greater in patients receiving ≥3 cycles to achieve CR. After RIC allo-HCT, the number of induction cycles to CR did not affect OS. Compared to CR in 1 cycle, relapse risk was 1.24-1.41-fold greater in patients receiving 2 or ≥3 cycles. For patients receiving only 1 cycle to CR, consolidation therapy prior to MAC allo-HCT was associated with improved OS vs. no consolidation therapy. Detectable MRD at the time of MAC allo-HCT did not impact outcomes while detectable MRD preceding RIC allo-HCT was associated with an increased risk of relapse. For allo-HCT in PIF, OS was significantly worse than allo-HCT in CR after 1–3 cycles.
Journal Article
Eculizumab in Transplant-Associated Thrombotic Microangiopathy
by
Bhatt, Vijaya Raj
,
Giri, Smith
,
Dhakal, Prajwal
in
Adolescent
,
Adult
,
Antibodies, Monoclonal, Humanized - pharmacology
2017
Introduction:
Transplant-associated thrombotic microangiopathy (TA-TMA) is a rare entity with no standard of care and high mortality, despite the use of plasma exchange.
Methods:
Using specific search terms, all cases having TA-TMA treated with eculizumab and indexed in MEDLINE (English language only) by November 2014 were reviewed.
Results:
A total of 26 cases, 53% men, had a median age of 33 years (range 2-61). Transplant-associated thrombotic microangiopathy occurred after stem-cell transplant (35%) or solid-organ transplant (65%), frequently associated with the use of cyclosporine or tacrolimus (96%). A disintegrin and metalloproteinase with a thrombospondin type 1 motif, member 13 (ADAMTS 13) level was always >10%. After TA-TMA diagnosis, the following drug adjustments were made: discontinuation of cyclosporine or tacrolimus in 45%, dose reduction in another 27%, continuation of the drugs in 23%, and switch from cyclosporine to tacrolimus in remaining 5%. Plasma exchange was performed in ∼43%. The median interval between transplant and initiation of eculizumab was 63 days (range 11-512). A median of 5.5 doses (range 2-21) of eculizumab was utilized with 92% response occurring after a median of 2 doses (range 1-18). At a median follow-up of 52 weeks (range 3-113), the survivors (92%) were doing well.
Conclusion:
Within the limits of this retrospective analysis, our study demonstrates that eculizumab use may result in high response rate and 1-year survival in patients with TA-TMA refractory to discontinuation of calcineurin inhibitor and plasma exchange.
Journal Article
An adapted European LeukemiaNet genetic risk stratification for acute myeloid leukemia patients undergoing allogeneic hematopoietic cell transplant. A CIBMTR analysis
by
Melhem, Solh
,
Abid Muhammad Bilal
,
Komanduri, Krishna V
in
Abnormalities
,
Acute myeloid leukemia
,
Cytogenetics
2021
Cytogenetic and molecular abnormalities are known to influence post-transplant outcomes in acute myeloid leukemia (AML) but data assessing the prognostic value of combined genetic models in the HCT setting are limited. We developed an adapted European LeukemiaNet (aELN) risk classification based on available genetic data reported to the Center for International Blood and Marrow Transplant Research, to predict post-transplant outcomes in 2289 adult AML patients transplanted in first remission, between 2013 and 2017. Patients were stratified according to aELN into three groups: favorable (Fav, N = 181), intermediate (IM, N = 1185), and adverse (Adv, N = 923). Univariate analysis demonstrated significant differences in 2-year overall survival (OS) (Fav: 67.7%, IM: 64.9% and Adv: 53.9%; p < 0.001); disease-free survival (DFS) (Fav: 57.8%, IM: 55.5% and Adv: 45.3; p < 0.001) and relapse (Fav: 28%, IM: 27.5% and Adv: 37.5%; p < 0.001). Multivariate analysis (MVA) revealed no differences in outcomes between the Fav and IM groups, thus they were combined. On MVA, patients in the Adv risk group had the highest risk of relapse (HR 1.47 p ≤ 0.001) and inferior DFS (HR 1.35 p < 0.001) and OS (HR 1.39 p < 0.001), even using myeloablative conditioning or in those without the pre-HCT measurable-residual disease. Novel approaches to mitigate relapse in this high-risk group are urgently needed.
Journal Article
Bacterial Pathogens Causing Pneumonia Post Hematopoietic Stem Cell Transplant: The Chronic GVHD Population
by
Bhatt, Vijaya Raj
,
Sadikot, Ruxana T.
,
Chaaban, Said
in
allogeneic hematopoietic stem cell transplant
,
Allografts
,
Bacteria
2023
Allogeneic stem cell transplantation is a lifesaving treatment for many malignancies. Post-transplant patients may suffer from graft versus host disease in the acute and/or the chronic form(s). Post-transplantation immune deficiency due to a variety of factors is a major cause of morbidity and mortality. Furthermore, immunosuppression can lead to alterations in host factors that predisposes these patients to infections. Although patients who receive stem cell transplant are at an increased risk of opportunistic pathogens, which include fungi and viruses, bacterial infections remain the most common cause of morbidity. Here, we review bacterial pathogens that lead to pneumonias specifically in the chronic GVHD population.
Journal Article
Hematopoietic Stem Cell Transplant-Associated Thrombotic Microangiopathy
by
Elsallabi, Osama
,
Bhatt, Vijaya Raj
,
Dhakal, Prajwal
in
Female
,
Graft vs Host Disease - diagnosis
,
Graft vs Host Disease - etiology
2016
Hematopoietic stem cell transplant-associated thrombotic microangiopathy (TA-TMA) is a fatal, multifactorial disorder, which may present with thrombocytopenia, hemolysis, acute renal failure, mental status changes and involvement of other organs. The pathogenesis of TA-TMA is complex and includes multiple risk factors such as certain conditioning regimens, calcineurin inhibitors (CNIs), graft-versus-host disease (GVHD), human leukocyte antigen mismatch, and opportunistic infections. The end result of these insults is endothelial injury in the kidney and other organs. Recent studies also indicate a role of complement activation in tissue damage. The lack of sensitive and specific diagnostic tests for TA-TMA often results in delayed diagnosis. Biopsy is not always possible for diagnosis because of the risk of complications such as bleeding. Recently, an emerging role of renal-centered screening approach has been demonstrated, which utilize the monitoring of blood pressure, urine protein, serum lactate dehydrogenase and hemogram for early detection. Therapeutic options are limited, and plasma exchange plays a minor role. Withdrawal of offending agent such as CNIs and the use of rituximab can be effective in some patients. However, the current treatment strategy is suboptimal and associated with high mortality rate. Recently, eculizumab has been utilized in a few patients with good outcomes. Patients, who develop TA-TMA, are also at an increased risk of GVHD, infection, renal, cardiovascular, and other complications, which can contribute to high mortality. Better understanding of molecular pathogenesis, improvement in posttransplant management, leading to early diagnosis, and management of TA-TMA are required to improve outcomes of this fatal entity.
Journal Article
Developing a National Study That Integrates the Geriatric Assessment into the Care of Older Patients with Myeloid Malignancies
2024
Purpose of ReviewTo highlight the priorities in geriatric assessment research in myeloid malignancies and discuss design considerations necessary to ensure research is patient-centric, generalizeable, and high quality.Recent FindingsOlder adults with myeloid malignancies including those who are perceived to have excellent performance status have multiple functional impairments. These impairments are associated with early mortality. Older adults have different functional trajectories through the course of treatment; this will be further investigated in our ongoing multicenter study. In a single-center study, we have demonstrated the use of geriatric assessment to guide treatment is feasible.SummaryKey priorities include designing a multicenter validation study to confirm the role of geriatric assessment in determining treatment tolerance and survival. Such a study should include core geriatric assessment measures and should enroll diverse patient population across various practices. Conducting such a study is necessary to advance patient care and trial design, and to open venues to conduct studies to confirm the role of geriatric assessment in treatment selection.
Journal Article
Chemotherapy use in stage III colon cancer: a National Cancer Database analysis
by
Bhatt, Vijaya Raj
,
Dahal, Sumit
,
Khanal, Nabin
in
Chemotherapy
,
Colon cancer
,
Colorectal cancer
2015
Background:
Although adjuvant chemotherapy in stage III colon cancer improves overall survival, prior studies have shown that it is underused. We analyzed different factors that may influence its use.
Methods:
This is a retrospective study of stage III colon cancer patients (n = 207,718) diagnosed between 2000 and 2011 in the National Cancer Data Base (NCDB). The NCDB contains ~70% of new cancer diagnosis from >1500 American College of Surgeons accredited cancer programs in the United States and Puerto Rico. The chi-squared test was used to determine any difference in characteristics of patients who did or did not receive chemotherapy.
Results:
A total of 35% of all stage III colon cancer patients, and 38% of stage III cases undergoing surgery, did not receive adjuvant chemotherapy. The use of chemotherapy had increased in recent years (64% in 2007–2011 versus 59% in 2000–2002; p < 0.0001). Its use was lower in whites (61%), females (60%), patients ⩾60 years (55%), patients with one or more comorbidities (55%), nonacademic centers (62%), those with medicare insurance (52%), lower education (61%) and income levels (59%, all p < 0.0001). The nonwhite and uninsured were more likely to be <60 years old.
Conclusion:
More than one-third did not receive adjuvant chemotherapy, although its use has increased in more recent years. Age was one of the most important determinants of chemotherapy use, which may explain higher rates in nonwhite and uninsured. In addition to patient characteristics, race, gender and socioeconomic factors influence chemotherapy use. These findings have important implications for healthcare reform.
Journal Article
Acute mesenteric ischemia: a sequela of abdominal aortography
by
Rijal, Jharendra
,
Wrzolek, Monika A.
,
Gottesman, Aaron
in
Abdomen
,
angiography and transcatheter embolization
,
aortography
2014
The use of abdominal angiography and transcatheter embolization has increased rapidly in the last few decades. Although improvement in angiographic techniques has made the procedure safe, ischemic colitis is a rare but potentially dreadful complication. We report a case of a 51-year-old woman who developed ischemic colitis following aortography, demonstrating that such angiographic studies may produce substantial morbidity.
Journal Article
Systemic therapy in stage IV pancreatic cancer: a population-based analysis using the National Cancer Data Base
2015
Background:
Pancreatic cancer accounts for approximately 7% of all cancer deaths. More than half of all pancreatic cancers are stage IV at diagnosis, where systemic chemotherapy is used with the goal of life prolongation as well as palliation. The patient characteristics and health system factors that drive the use of systemic therapy are unknown.
Method:
This is a retrospective study of stage IV pancreatic cancer patients (n = 140,210) diagnosed between 2000 and 2011 in the NCDB. NCDB contains approximately 70% of new cancer diagnosis from more than 1500 accredited cancer programs in the United States and Puerto Rico. Chi-squared test was used to determine any differences in characteristics of patients who did or did not receive systemic therapy.
Results:
Our study demonstrated that only 49.1% of stage IV pancreatic cancer patients received systemic therapy. The use of systemic therapy is significantly lower in female, African American/Hispanic, patients older than 40 years, those without insurance or with Medicare and Medicaid, higher Charlson Comorbidity Score, poor economic and educational status and in nonacademic centers.
Conclusions:
This is the largest study to evaluate the determinants of systemic therapy use in stage IV pancreatic cancer. The use of systemic therapy was significantly lower in patients older than 40 years, lower educational status, nonprivate insurance and with higher Charlson Comorbidity Scores. In addition, the use of systemic therapy was lower with female sex, African Americans/Hispanic, and lower socio-economic status. Understanding the barriers in the use of systemic therapy as well as appropriate utilization of systemic therapy can both optimize cancer care.
Journal Article