PMID: 21078917 Assay Assay and technical information Invitae is a College of American Pathologists (CAP)-accredited and Clinical Laboratory Improvement Amendments (CLIA)-certified clinical diagnostic laboratory performing full-gene sequencing and deletion [invitae.com]

Weakness of the finger extensors is often accompanied by a postural and action tremor of the hands. Figure 2. Individual with Laing distal myopathy attempting to extend her second to fifth fingers. [ncbi.nlm.nih.gov]