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- W2287061023 abstract "e22231 Background: Chromosomal abnormalities and molecular detection has potential importance for diagnosis and prognosis of MDS, although the mechanisms underlying the development of MDS and their progressive evolution to AML are still largely unknown. Since, no studies have been reported from India on the prevalence of N-RAS, K- RAS point mutation in codon 12 and FLT3-ITD mutations in patients with MDS, we undertook this study. Methods: DNA and RNA were extracted from bone marrow /peripheral blood. Using RT-PCR the patients were screened for length mutations in FLT3 gene. PCR-RFLP and nested PCR-RFLP were used for the detection of point mutation in codon 12 of N-RAS and K-RAS. Results: A total of 53 patients (median age 39 yrs, range 9–78yrs; M: F 2:1; median TLC-3.9×10 9 /l, range 0.8–116 ×10 9 /l Median platelet count- 87 ×10 9 /l, range 1–349 ×10 9 /l, Median hemoglobin -6.8 g/dl, range 2.7- 16.1 g/dl, were studied. One out of 53 patients (2%) was found positive for N-RAS and four patients were positive for K-RAS (8%) mutation. FLT3-ITD mutation was studied in 47 patients; all the patients were found negative. The mean observation of all the patients was 30 months and the median overall survival was 28 months. Nine patients died during follow up. The presence of N-RAS codon 12 mutation was associated with the poor survival. FLT3-ITD mutation was not observed in any of our cases, which is in contrast to 3% reported from the West. Conclusions: Thus, it appears that the RAS and FLT3 mutations are uncommon in MDS patients in India. No significant financial relationships to disclose." @default.
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- W2287061023 date "2009-05-20" @default.
- W2287061023 modified "2023-09-26" @default.
- W2287061023 title "Low frequency of RAS and absence of FLT3-ITD gene mutations in patients with Myelodysplastic Syndromes in India: AIIMS experience" @default.
- W2287061023 doi "https://doi.org/10.1200/jco.2009.27.15_suppl.e22231" @default.
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