Next generation sequencing reveals novel homozygous frameshift in

摘要

Intellectual developmental disorder with abnormal behavior, microcephaly and short stature (IDDABS), (OMIM# 618342) is an autosomal recessive condition described as developmental delay, poor or absent speech, intellectual disability, short stature, mild to progressive microcephaly, delayed psychomotor development, hyperactivity, seizure, along with mild to swear aggressive behavior. Homozygous frameshift mutation in Pseudouridine Synthase 7, Putative; (PUS7) OMIM# 616,261 {"type":"entrez-nucleotide","attrs":{"text":"NM_019042.3","term_id":"50727001","term_text":"NM_019042.3"}}NM_019042.3 and splice acceptor variants in Alpha-Aminoadipic Semialdehyde Synthase; (AASS) OMIM# 605,113 {"type":"entrez-nucleotide","attrs":{"text":"NM_005763.3","term_id":"197927212","term_text":"NM_005763.3"}}NM_005763.3 was funded. Whole exome sequencing (WES) technique was used as tool to identify the molecular diagnostic test. Different bioinformatics analysis done for WES data and we identified two novel mutations one as frameshift mutation c.606_607delGA, p.Ser282CysfsTer9 in the PUS7 gene and splice acceptor variants c.1767–1 G > A in the AASS gene has been reported. The pattern of family segregation maintained the pathogenicity of this variation associated with abnormal behavior, intellectual developmental disorder, microcephaly along with short stature IDDABS. Further, the WES data was validated in the family having other affected individuals and healthy controls (n = 100) was done using Sanger sequencing. Finally, our results further explained the role of WES in the disease diagnosis and elucidated that the mutation in PUS7 and AASS genes may lead an important role for the development of IDDABS in Saudi family.