10.22376/ijpbs.2019.10.1.p1-12 Volume 8 Issue 2 2017 (April - June) Fragile-X syndrome (FXS) is the most common inherited form of mental disorder. The clinical features of FXS include moderate to severe mental retardation, dysmorphic facial features. One such case was seen & admitted in our hospital with similar clinical symptoms. We examined both clinical and cytological analysis. After examining all these we found child with Fragile X Syndrome. We suggest that molecular analysis of Fragile X Syndrome related to FMR1gene will help to know the novel mutation in this population, which will be helpful for early diagnosis of Fragile-X syndrome and type of genetic disorder. DR G.S.KADAKOL,DR M M PATIL, DR S V PATIL, DR.BHEEMSHETTY S. PATIL, DR R S BULAGOUDA Fragile X Syndrome (FXS), Mental retardation, Cytogenetic Analysis, Clinical case Fragile X Syndrome 27-30