Publications by authors named "Komanduri Krishna"

Cytomegalovirus (CMV) reactivation is a major complication among seropositive allogeneic hematopoietic cell transplantation recipients; however, data on CMV reactivation after chimeric antigen receptor (CAR) T-cell therapy are limited. We report the incidence and outcomes of 95 adult CMV-seropositive patients who received CAR T-cell therapy between February 2018 and February 2023. CMV outcomes were CMV reactivation (any viremia) and clinically significant CMV infection (cs-CMV).

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Background: Allogeneic stem cell transplantation (allo-SCT) is the preferred therapy for patients with high-risk or relapsed hematologic malignancies, but may be complicated by psychological distress (e.g., depression, anxiety) and symptom burden (e.

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Genetically modified cell therapies (GMCT), particularly immune effector cells (IEC) such as chimeric receptor antigen (CAR) T cells, have shown promise in curing cancer and rare diseases after a single treatment course. Following close behind CAR T approvals are GMCT based on hematopoietic stem cells, such as products developed for hemoglobinopathies and other disorders. Academically sponsored GMCT products, often developed in academic centers without industry involvement, face challenges in sustaining access after completion of early phase studies when there is no commercial partner invested in completing registration trials for marketing applications.

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Allogeneic hematopoietic stem cell transplantation (aHSCT) can cure patients with otherwise fatal leukemias and lymphomas. However, the benefits of aHSCT are limited by graft-versus-host disease (GVHD). Minnelide, a water-soluble analog of triptolide, has demonstrated potent antiinflammatory and antitumor activity in several preclinical models and has proven both safe and efficacious in clinical trials for advanced gastrointestinal malignancies.

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Adoptive cell therapy with autologous, ex vivo-expanded, tumor-infiltrating lymphocytes (TILs) is being investigated for treatment of solid tumors and has shown robust responses in clinical trials. Based on the encouraging efficacy, tolerable safety profile, and advancements in a central manufacturing process, lifileucel is now the first US Food and Drug Administration (FDA)-approved TIL cell therapy product. To this end, treatment management and delivery practice guidance is needed to ensure successful integration of this modality into clinical care.

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Background: Isavuconazole (ISA) is a newer antifungal used in patients with history of hematologic malignancies and hematopoietic transplant and cellular therapies (HM/TCT). Although it has a more favorable side-effect profile, breakthrough invasive fungal infections (bIFIs) while on ISA have been reported.

Methods: In this single-center retrospective study evaluating HM/TCT patients who received prophylactic ISA for ≥7 days, we evaluated the incidence and potential risk factors for bIFIs.

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Article Synopsis
  • The study aimed to evaluate if early measurements of matrix metalloproteinase-9 (MMP-9) and dry eye symptoms (using the DE Questionnaire-5) could forecast the onset of chronic graft-versus-host disease (cGVHD) and severe dry eye symptoms in patients post-hematopoietic stem cell transplant (HCT).
  • A total of 25 patients were assessed on day 100 after HCT, revealing that 28% developed cGVHD, with 32% showing positive MMP-9 results and 20% having significant dry eye symptoms.
  • However, the results indicated that neither MMP-9 levels nor dry eye symptom scores could reliably predict the occurrence of cGVHD or worsening dry eye
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Autologous hematopoietic stem cell transplantation (HCT) has been a standard of care treatment for eligible patients with newly diagnosed multiple myeloma (MM). Guidelines generally recommend hematopoietic progenitor cell (HPC) harvest for two potential HCT. There is a paucity of data reporting use of such collections in the era of novel approved therapies.

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  • KRAS-TP53 genomic coalteration in pancreatic ductal adenocarcinoma (PDAC) leads to immune exclusion and poor survival, driven by the key mediator Cxcl1 and its interaction with neutrophils.
  • Silencing Cxcl1 in specific PDAC models reprograms neutrophils, enhancing T-cell activity and controlling tumor growth through T-cell dependence.
  • The study reveals that neutrophil-derived TNF plays a crucial role in maintaining immunosuppression and inflammation in PDAC, suggesting that targeting TNF signaling could improve chemotherapy effectiveness.
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  • T cell-mediated hyperinflammatory responses, particularly cytokine release syndrome (CRS) and immune effector cell-associated neurotoxicity syndrome (ICANS), are recognized toxicities from CAR T cell therapy, with recent findings highlighting HLH-like toxicities as significant yet poorly defined complications.
  • A panel of experts from various medical fields has been formed to better understand and manage these HLH-like toxicities, now termed "immune effector cell-associated HLH-like syndrome (IEC-HS)," indicating a broader impact across different patient populations and CAR T cell constructs.
  • The panel proposes a framework for identifying IEC-HS, including a grading system to assess severity, and suggests treatment strategies and supportive care to improve patient outcomes and facilitate further
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Background: The optimal number of doses as well as the role for measurement of postvaccination titers after measles, mumps, rubella (MMR) vaccination in adult hematopoietic cell transplantation (HCT) recipients remains unknown.

Methods: In the present study, we assessed humoral immunity against measles, mumps and rubella before and after MMR vaccination in 187 adults who received at least one dose of the MMR vaccine after HCT.

Results: Among those with baseline titers, posttransplant prevaccination seroprotection rates were 56%, 30%, and 54% for measles, mumps, and rubella, respectively; and significantly lower in allogeneic versus autologous HCT recipients for measles (39% vs.

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  • The studies investigated the impact of using mobilized peripheral blood (mPB) from mice and humans, along with FoxP3+ Treg cells, on transplant outcomes, highlighting improved results in preventing graft-versus-host disease (GVHD).
  • Mice that received mPB enriched with expanded Tregs demonstrated less weight loss and lower clinical GVHD scores compared to those receiving unexpanded Tregs, while still maintaining effective anti-leukemia activity.
  • Human Tregs (huTregs) expanded before transplant also significantly reduced treatment-related lethality and GVHD scores in mice, indicating that the manipulation of Tregs alongside the use of mPB can enhance the effectiveness of hematopoietic stem cell transplants (HSCT).
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As the number and type of regulatory authority-approved cellular therapies grow, clinical treatment centers face a heavy burden of duplicative documentation around initial qualification, ongoing auditing, and reporting, with overlapping requirements from each manufacturer to ensure safe use of their specific product, which in the United States are stipulated under individual Food and Drug Administration (FDA) Biologic License Applications. The American Society for Transplantation and Cellular Therapy (ASTCT) convened the 80/20 Task Force to consider challenges and potential solutions to these issues. The Task Force proposed that 80% of manufacturers' requirements for onboarding and ongoing operations of commercially available products could be standardized and streamlined.

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  • * A clinical trial involving 80 patients treated with either myeloablative or reduced-intensity conditioning demonstrated a 3-year overall survival rate of 70% for the reduced-intensity group and 62% for the myeloablative group, with no reported GVHD after one year.
  • * The findings highlight the potential benefits of PTCy in mismatched unrelated donor HCT, though further research is needed to address issues like relapse rates and optimal donor
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Clinical Goals (CG) is a tool available in the Varian Eclipse planning system to objectively and visually evaluate the quality of treatment plans based upon user-defined dose-volume parameters. We defined a set of CG for Stereotactic Radiosurgery (SRS) and Intensity-Modulated Radiotherapy (IMRT) based on published data and guidelines and implemented this in a network of cancer centers in India (American Institute of Oncology). A dosimetric study was performed to compare brain SRS and breast IMRT plan quality before and after CG implementation.

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High-dose melphalan-based autologous stem cell transplant (ASCT) remains a standard of care for plasma cell disorders (PCDs). Currently, there is variability in the literature surrounding the timing of melphalan administration to avoid potential cytotoxic effects, although the administration has been safely proposed when given at least 8 hours prior to stem cell infusion. The objectives of this study were to assess differences in safety and efficacy outcomes between day -1 and day -2 single-dose melphalan administration in patients undergoing ASCT for PCDs.

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Allogeneic hematopoietic cell transplantation (alloHCT) can potentially salvage large B-cell lymphoma (LBCL) patients experiencing treatment failure after chimeric antigen receptor T-cell therapy (CAR T). Nonetheless, data on the efficacy and toxicities of alloHCT after receipt of CAR T are limited. We report a multicenter retrospective study assessing the safety, toxicities, and outcomes of alloHCT in LBCL patients following CAR T failure.

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A common method to prevent graft-versus-host disease after allogeneic hematopoietic cell transplantation (HCT) from an HLA-mismatched unrelated donor (MMUD) is tacrolimus, methotrexate, and antithymocyte globulin (ATG). The use of posttransplant cyclophosphamide (PTCy) showed promise in a prospective trial for MMUD HCT. We compared 1-year graft-versus-host disease-free, relapse-free survival (GRFS) in 128 recipients of prophylaxis based on tacrolimus/methotrexate/ATG (ATG group, n = 46) vs PTCy, mycophenolate mofetil, and tacrolimus or sirolimus (PTCy group, n = 82) after MMUD HCT.

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Co-occurrent KRAS and TP53 mutations define a majority of patients with pancreatic ductal adenocarcinoma (PDAC) and define its pro-metastatic proclivity. Here, we demonstrate that KRAS-TP53 co-alteration is associated with worse survival compared with either KRAS-alone or TP53-alone altered PDAC in 245 patients with metastatic disease treated at a tertiary referral cancer center, and validate this observation in two independent molecularly annotated datasets. Compared with non-TP53 mutated KRAS-altered tumors, KRAS-TP53 co-alteration engenders disproportionately innate immune-enriched and CD8 T-cell-excluded immune signatures.

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Article Synopsis
  • Allogeneic hematopoietic stem cell transplantation (allo-HSCT) can lead to graft-versus-host disease (GVHD), which hinders immune recovery and can complicate treatment outcomes.
  • Post-transplantation cyclophosphamide (PTCy) and donor expanded Tregs (TrED) are being studied as effective strategies to prevent GVHD and enhance the recovery of natural killer (NK) cells, which are essential for fighting infections and preventing cancer relapse.
  • Research indicates that both PTCy and TrED improve NK cell numbers and functionality, with PTCy showing slightly greater effectiveness, potentially leading to better early immunity after allo-HSCT.
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Invasive aspergillosis is the most common invasive mold infection following a hematopoietic cell transplant. Widespread use of antifungal prophylaxis has led to the increasing incidence of cryptic Aspergillus species. Aspergillus calidoustus is one of those emerging species and is notorious for multidrug resistance to antifungals.

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