Publications by authors named "S Iyengar"
Background: Procarbazine-containing chemotherapy regimens are associated with cytopenias and infertility, suggesting stem-cell toxicity. When treating Hodgkin lymphoma, procarbazine in escalated-dose bleomycin-etoposide-doxorubicin-cyclophosphamide-vincristine-procarbazine-prednisolone (eBEACOPP) is increasingly replaced with dacarbazine (eBEACOPDac) to reduce toxicity. We aimed to investigate the impact of this drug substitution on the mutation burden in stem cells, patient survival, and toxicity.
View Article and Find Full Text PDFArticle Synopsis
- * By analyzing data from the Million Veteran Program and other cohorts, the study identifies 63 genetic loci linked to AMD, including 30 that were previously unknown, highlighting significant differences in risk among various ancestries.
- * The findings reveal that certain genetic risk factors, like those found in the CFH locus, have varying effects based on ancestry, suggesting that targeted therapies could be developed by considering these genetic differences.
Article Synopsis
- TAVR with a self-expanding supra-annular valve has better long-term outcomes and durability compared to traditional surgical aortic valve replacement (SAVR).
- In a study, a 29-mm Evolut valve was successfully implanted in 4 patients undergoing SAVR, who had various aortic valve conditions.
- Results showed no valve migration, no need for pacemakers, and low pressure gradients post-surgery, indicating the procedure's effectiveness for those not suitable for TAVR.
In heart failure, sympathetic overdrive is evidenced by norepinephrine spillover, receptor level changes, etc. Beta-blockers continue to be the cornerstone of treatment in patients with chronic heart failure due to their ability to counteract sympathetic overdrive. Extensive clinical research has demonstrated that long-term beta-blocker treatment with metoprolol succinate, carvedilol, or bisoprolol enhances left ventricular function and reverses left ventricular remodeling, decreases hospitalization risk, and increases survival.
View Article and Find Full Text PDFImportance: Primary open-angle glaucoma (POAG) polygenic risk scores (PRSs) continue to be evaluated in primarily European-ancestry populations despite higher prevalence and worse outcomes in African-ancestry populations.
Objective: To evaluate how established POAG PRSs perform in African-ancestry samples from the Genetics in Glaucoma Patients of African Descent (GIGA), Genetics of Glaucoma in Individuals of African Descent (GGLAD), and Million Veteran Program (MVP) datasets and compare these with European-ancestry samples.
Design, Setting, And Participants: This was a multicenter, cross-sectional study of POAG cases and controls from Tanzania, South Africa, Nigeria, Ghana, and the US.