rs45517423

Description

Co-occurence with a mutation in another gene that clearly explains a proband's phenotype;Intact protein function observed in appropriate functional assay(s);Other data supporting benign classification

This variant was classified as: Benign. The following ACMG criteria were applied in classifying this variant: BS1,BS2.

Variant identified in a genome or exome case(s) and assessed due to predicted null impact of the variant or pathogenic assertions in the literature or databases. Disclaimer: This variant has not undergone full assessment. The following are preliminary notes: This variant is classified in HGMD as DM and seen in 7 papers, including in patients who inherited the mutation from unaffected parents. This variant is present in gnomAD with a Max MAF of 0.36% of Ashkenazi Jews (36/10110 chrs and homozygous in 1 Latino). High for tuberous sclerosis incidence of 1/25000-1/11300. The variant is classified with 1 star in ClinVar as VUS by 3 submitters (CSER_CC_NCGL, University of Chicago, and Ambry), Likely benign by 3 submitters (Emory, Invitae, Biesecker), and Benign by GeneDx.

This variant is associated with the following publications: (PMID: 22703879, 24055113, 25637381, 21309039, 11208653, 27884173, 27153395, 26332594)

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease.