GenomeConnect, the NIH-funded Clinical Genome Resource (ClinGen) patient registry, engages patients in data sharing to support the goal of creating a genomic knowledge base to inform clinical care and research. Participant self-reported health information and genomic variants from genetic testing reports are curated and shared with public databases, such as ClinVar. There are four primary benefits of GenomeConnect: 1) sharing novel genomic data - 47.9% of variants were new to ClinVar, highlighting patients as a genomic data source; 2) contributing additional phenotypic information - of the 52.1% of variants already in ClinVar, GenomeConnect provided enhanced case-level data; 3) providing a way for patients to receive variant classification updates if the reporting laboratory submits to ClinVar – 97.3% of responding participants opted to receive such information and 13 updates have been identified; and 4) supporting connections with others, including other participants, clinicians, and researchers to enable the exchange of information and support - 60.4% of participants have opted to partake in participant matching. Moving forward, ClinGen plans to increase patient-centric data sharing by partnering with other existing patient groups. By engaging patients, more information is contributed to the public knowledge base, benefiting both patients and the genomics community.
Background: Swyer syndrome is a difference of sex development that is typically associated with mutations in genes responsible for testicular development. It is speculated that some cases may result from cryptic 45,X/46,XY mosaicism leading to abnormal gonadal development. The presence or absence of a 45,X lineage is important for prognosis and management. Case: We present a case of apparent Swyer syndrome associated with a 46,XY chromosomal complement in lymphocytes and 45,X/46,XY mosaicism on analysis of her noncancerous gonad. Gonadal histology was consistent with a 45,X phenotype. Summary and Conclusion: This case demonstrates the clinical variability in the presentation of 45,X/46,XY mosaicism and highlights the importance of thorough genetic testing that includes consideration of chromosomal mosaicism. We will discuss the implications of this diagnosis for management.
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