2025 ACMG ANNUAL CLINICAL GENETICS MEETING POSTER PRESENTATION

Clinical Utility and Diagnostic Yield of Comprehensive Genetic Testing in Adults with Intellectual and Developmental Disabilities (IDD): A Single-Center Experience 

OVERVIEW

Genetic testing is a standard of care for children with intellectual and developmental disabilities (IDD) but remains underutilized in adult populations despite significant advancements in genomic technologies such as whole exome sequencing (WES), whole genome sequencing (WGS), and chromosomal microarray analysis (CMA). This study evaluates the diagnostic yield and clinical utility of these testing modalities in adults with IDD, addressing existing disparities in care and access. A retrospective analysis of 69 adults referred to SequenceMD between 2022 and 2024 demonstrated an overall diagnostic yield of 37.7%, with WES/WGS outperforming gene panels (73.1% vs. 23.1%). Clinical utility outcomes included therapeutic interventions (27.5%), preventive care (34.8%), and long-term planning (37.7%), emphasizing the value of genomic testing in optimizing adult IDD management. These findings advocate for updating clinical guidelines to include WES/WGS as foundational diagnostic tools for adults with IDD.

To learn more about this research, click on SequenceMD poster graphic.

To listen to an audio tour of the poster, which was provided by Rebeca Venezia, MS, CGC of SequenceMD, who collaborated on the research with Patrick Long, MD, click the play button.

Please refer to the following documents for more information about the research: patient ICD-10 codes, references and patient location zip codes. The map indicates patients in rural areas where care may be scarce sometimes, but SequenceMD provided help with a diagnosis and/or management care.

PATIENT REFERRALS

To refer a patient to SequenceMD, download the referring physician form by clicking the button below and fax it to 833-991-3554 or email us at info@sequencemd.com.

REFERRING PHYSICIAN FORM