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Højland AT, Lolas I, Okkels H, Lautrup CK, Diness BR, Petersen MB, Nielsen IK. First reported adult patient with TARP syndrome: A case report. Am J Med Genet A 2018; 176:2915-2918. [PMID: 30462380 PMCID: PMC6587983 DOI: 10.1002/ajmg.a.40638] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Revised: 08/22/2018] [Accepted: 08/25/2018] [Indexed: 11/17/2022]
Abstract
TARP syndrome (talipes equinovarus, atrial septal defect, Robin sequence, and persistence of the left superior vena cava) is a rare X‐linked syndrome often resulting in pre‐ or post‐natal lethality in affected males. In 2010, RBM10 was identified as the disease‐causing gene, and we describe the first adult patient with TARP syndrome at age 28 years, hereby expanding the phenotypic spectrum. Our patient had Robin sequence, atrial septal defect, intellectual disability, scoliosis, and other findings previously associated with TARP syndrome. In addition, he had a prominent nose and nasal bridge, esotropia, displacement of lacrimal points in the cranial direction, small teeth, and chin dimple, which are the findings that have not previously been associated with TARP syndrome. Our patient was found to carry a hemizygous c.273_283delinsA RBM10 mutation in exon 4, an exon skipped in three of five protein‐coding transcripts, suggesting a possible explanation for our patient surviving to adulthood. Direct sequencing of maternal DNA indicated possible mosaicism, which was confirmed by massive parallel sequencing. One of two sisters were heterozygous for the mutation. Therefore, we recommend sisters of patients with TARP syndrome be carrier tested before family planning regardless of carrier testing results of the mother. Based on our patient and previously reported patients, we suggest TARP syndrome be considered as a possible diagnosis in males with severe or profound intellectual disability combined with septal heart defect, and Robin sequence, micrognathia, or cleft palate.
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Affiliation(s)
- Allan T Højland
- Research and Knowledge Center in Sensory Genetics, Department of Clinical Genetics, Aalborg University Hospital, Aalborg, Denmark.,Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | - Ihab Lolas
- Research and Knowledge Center in Sensory Genetics, Section of Molecular Diagnostics, Department of Clinical Biochemistry, Aalborg University Hospital, Aalborg, Denmark
| | - Henrik Okkels
- Research and Knowledge Center in Sensory Genetics, Section of Molecular Diagnostics, Department of Clinical Biochemistry, Aalborg University Hospital, Aalborg, Denmark
| | - Charlotte K Lautrup
- Research and Knowledge Center in Sensory Genetics, Department of Clinical Genetics, Aalborg University Hospital, Aalborg, Denmark.,Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | - Birgitte R Diness
- Department of Clinical Genetics, Copenhagen University Hospital, Rigshospitalet, Copenhagen
| | - Michael B Petersen
- Research and Knowledge Center in Sensory Genetics, Department of Clinical Genetics, Aalborg University Hospital, Aalborg, Denmark.,Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | - Irene K Nielsen
- Research and Knowledge Center in Sensory Genetics, Department of Clinical Genetics, Aalborg University Hospital, Aalborg, Denmark
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