CRYAB variants in DCM cohorts

The table below lists the 2 rare (MAF<0.0001 in ExAC) protein-altering CRYAB variants identified in a cohort of 425 DCM patients (304 patients from OMGL, 121 patients from LMM). When this rare variant frequency of 0.00471 is compared with a background population rate of 0.00208, there is a case excess of 0.00263, although this is not statistically significant for protein-altering CRYAB variants in DCM (p=0.2263).

Variant Type:      All protein-altering variants     -     Truncating variants     -     Non-Truncating variants
Source:      Combined (OMGL + LMM)     -     OMGL     -     LMM

No. Variant (CDS) Variant (Protein) Variant Type Cases (425)OMGL classLMM class ExAC frequency
1. c.487C>T p.R163Cmissense 1VUS (1)0.000016
2. c.124A>G p.T42Amissense 1VUS (1)0.000010


1. Roddy Walsh, Kate L. Thomson, James S. Ware, Birgit H. Funke, Jessica Woodley, Karen J. McGuire, Francesco Mazzarotto, Edward Blair, Anneke Seller, Jenny C. Taylor, Eric V. Minikel, Exome Aggregation Consortium, Daniel G. MacArthur, Martin Farrall, Stuart A. Cook and Hugh Watkins. Reassessment of Mendelian gene pathogenicity using 7,855 cardiomyopathy cases and 60,706 reference samples. Genet Med. 2016 doi:10.1038/gim.2016.90.

2. Pugh TJ, Kelly MA, Gowrisankar S, Hynes E, Seidman MA, Baxter SM, Bowser M, Harrison B, Aaron D, Mahanta LM, Lakdawala NK, McDermott G, White ET, Rehm HL, Lebo M, Funke BH. The landscape of genetic variation in dilated cardiomyopathy as surveyed by clinical DNA sequencing. Genet Med. 2014 Aug;16(8):601-8.