Gene Name: DICER1 PMCID: PMC5443331 PMID: 28323992 HGNCID: not found Inheritance Pattern: autosomal dominant Disease Entity: thyroid cancer and familial multinodular doiter Mutation: germline loss-of-function mutation Zygosity: not provided Variant: c.1870C>T; p.Arg624a, c.1870C>T; p.Arg624a, c.1870C>T; p.Arg624a, c.1870C>T; p.Arg624a, c.3726C>A; p.Tyr1242a, c.3675C>G; p.Tyr1225a, c.3675C>G; p.Tyr1225a Family Information: 145 individuals with a DICER1 germline mutation and 135 controls from 48 families Case: family members used; both males and females used and no significant differences seen among sex; ages range from 20-40 with carriers being significantly younger than controls; no significant differences seen among ethnicity but participants located from the US, UK, and Great Britain CasePresentingHPOs: thyroid cancer or MNG diagnosis common to those with a DICER! mutation but with no chemotherapy or radiation treatment yet CasePreviousTesting: tested levels of thyroid-stimulating hormone, thyroxine, thyroxine-binding globulin, and serum albumin; thyroid palpation; thyroid ultrasound; Sanger or next-generation sequencing assays gnomAD: n/a Mutation Type: missense