期刊
JAMA OPHTHALMOLOGY
卷 134, 期 9, 页码 1049-1053出版社
AMER MEDICAL ASSOC
DOI: 10.1001/jamaophthalmol.2015.5833
关键词
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资金
- National Institute for Health Research (UK)
- Biomedical Research Centre at Moorfields Eye Hospital
- University College London Institute of Ophthalmology [BRC2_003]
- Foundation Fighting Blindness (FFB) [C-CL:0710-0505-MEH10-02]
- Fight for Sight [1318, 1801]
- Moorfields Eye Hospital Special Trustees [ST1109B]
- FFB Career Development Award
IMPORTANCE A multiorgan syndromic disorder characterized by sideroblastic anemia, immunodeficiency, periodic fever, and developmental delay with an uncharacterized retinal dystrophy is caused by TRNT1. This report of a family with a homozygous mutation in TRNT1 expands the ocular phenotype to include cataract and inner retinal dysfunction and details a mild systemic phenotype. OBSERVATIONS A consanguineous family with 3 affected children was investigated. Key clinical features comprised hypogammaglobulinemia, short stature with microcephaly, cataract, and inner retinal dysfunction without sideroblastic anemia or developmental delay. Two siblings had poor balance and 1 sibling had sensorineural hearing loss. The oldest sibling had primary ovarian failure diagnosed at age 14.5 years. Exome sequencing identified a homozygous missense variant in TRNT1, c.295C>T (p.Arg99Trp) in all 3 patients. The sibling with hearing loss also harbored a homozygous mutation in GJB2, c.71G>A (p.Trp24*), which is an established cause of sensorineural hearing loss. CONCLUSIONS AND RELEVANCE This family expands the ocular and systemic phenotypes associated with mutations in TRNT1, demonstrating phenotypic variability and highlighting the need for ophthalmic review of these patients.
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