ClinGen Dosage Sensitivity Curation Page


Curation Status: Complete

Gene Information

Location Information

Evidence for Loss Phenotypes

Evidence for Triplosenstive Phenotype

Evidence for triplosensitivity phenotype
PubMed ID Description
16921174 Sleegers et al (2006) reported a focal APP gene duplication segregating in a large, multigenerational Dutch family with dominantly inherited early-onset Alzheimer disease. Additionally, a similar duplication involving only the APP gene was reported in this paper in an unrelated individual from the same geographical area with early-onset Alzheimer disease.

NOTE:The loss of function score should be used to evaluate deletions, and the triplosensitivity score should be used to evaluated duplications. CNVs encompassing more than one gene must be evaluated in their totality (e.g. overall size, gain vs. loss, presence of other genes, etc). The rating of a single gene within the CNV should not necessarily be the only criteria by which one defines a clinical interpretation. Individual interpretations must take into account the phenotype described for the patient as well as issues of penetrance and expressivity of the disorder. ACMG has published guidelines for the characterization of postnatal CNVs, and these recommendations should be utilized (Genet Med (2011)13: 680-685). Exceptions to these interpretive correlations will occur, and clinical judgment should always be exercised.