Usefulness of Genetic Aberration and Shorter Telomere Length in Myelodysplastic Syndrome: A Pilot Study.

Abstract

We aimed to evaluate the clinical usefulness of genetic aberration and shorter telomere length (TL) in individuals with myelodysplastic syndrome (MDS). A targeted sequencing panel with 49 genes and TL measurement by quantitative real-time polymerase chain reaction were performed for 46 subjects. According to the revised International Prognostic Scoring System (IPSS-R) subtypes, the mutation frequency was 33.3%, 57.9%, and 100% in the very low/low, intermediate, and very high/high risk groups, respectively. A shorter telomere was detected in 43.5%. We defined group 1 as IPSS-R-high or -very high risk, group 2 as having 1 or more genetic aberrations, group 3 as having a shorter TL, and group 4 as having a longer TL than the age-matched reference. Group 1 and group 2 showed an adverse prognosis. The TL was not strongly correlated with MDS prognosis. However, it may be related to a poor long-term prognosis. Genetic variation and shorter TL may be helpful in reclassifying non-high-risk groups.