Publications by authors named "Rahmat Sikder"

Muscle-invasive bladder cancer (MIBC) frequently harbors mutations in the gene, which encodes the tumor suppressor protein p21, with the majority of alterations truncating the peptide. The effect of these mutations is poorly understood. We hypothesized that after DNA-damaging events, cells deficient in p21 would be unable to halt the cell cycle and efficiently repair DNA damage, thus proceeding down the apoptotic pathway.

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Imidazolium salts have shown great promise as anticancer materials. A new imidazolium salt (TPP1), with a triphenylphosphonium substituent, has been synthesized and evaluated for in vitro and in vivo cytotoxicity against bladder cancer. TPP1 was determined to have a GI ranging from 200 to 250 μM over a period of 1 h and the ability to effectively inhibit bladder cancer.

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Purpose Of Review: The purpose of this review is to examine and evaluate similarities and differences in bladder cancer expression subtypes and to understand the clinical implications of the molecular subtyping.

Recent Findings: Four independent classification systems have been described, and there are broad similarities among the subtyping callers. Two major subtypes have been identified, that is, luminal and basal, with underlying subcategories based on various distinct characteristics.

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The cancer-predisposing Lynch Syndrome (LS) arises from germline mutations in DNA mismatch repair (MMR) genes, predominantly MLH1, MSH2, MSH6, and PMS2. A major challenge for clinical diagnosis of LS is the frequent identification of variants of uncertain significance (VUS) in these genes, as it is often difficult to determine variant pathogenicity, particularly for missense variants. Generic programs such as SIFT and PolyPhen-2, and MMR gene-specific programs such as PON-MMR and MAPP-MMR, are often used to predict deleterious or neutral effects of VUS in MMR genes.

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