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Jurgens J, Sobreira N, Modaff P, Reiser CA, Seo SH, Seong MW, Park SS, Kim OH, Cho TJ, Pauli RM. Novel COL2A1 variant (c.619G>A, p.Gly207Arg) manifesting as a phenotype similar to progressive pseudorheumatoid dysplasia and spondyloepiphyseal dysplasia, Stanescu type. Hum Mutat 2015; 36:1004-8. [PMID: 26183434 DOI: 10.1002/humu.22839] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Accepted: 07/02/2015] [Indexed: 01/09/2023]
Abstract
Progressive pseudorheumatoid dysplasia (PPRD) is a rare, autosomal-recessive condition characterized by mild spondyloepiphyseal dysplasia (SED) and severe, progressive, early-onset arthritis due to WISP3 mutations. SED, Stanescu type, is a vaguely delineated autosomal-dominant dysplasia of unknown genetic etiology. Here, we report three individuals from two unrelated families with radiological features similar to PPRD and SED, Stanescu type who share the same novel COL2A1 variant and were matched following discussion at an academic conference. In the first family, we performed whole-exome sequencing on three family members, two of whom have a PPRD-like phenotype, and identified a heterozygous variant (c.619G>A, p.Gly207Arg) in both affected individuals. Independently, targeted sequencing of the COL2A1 gene in an unrelated proband with a similar phenotype identified the same heterozygous variant. We suggest that the p.Gly207Arg variant causes a distinct type II collagenopathy with features of PPRD and SED, Stanescu type.
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Affiliation(s)
- Julie Jurgens
- McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, 21205.,Predoctoral Training Program in Human Genetics, Johns Hopkins University School of Medicine, Baltimore, Maryland, 21205
| | - Nara Sobreira
- McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, 21205
| | - Peggy Modaff
- Department of Pediatrics, University of Wisconsin-Madison, Madison, Wisconsin, 53705
| | - Catherine A Reiser
- Department of Pediatrics, University of Wisconsin-Madison, Madison, Wisconsin, 53705
| | - Soo Hyun Seo
- Department of Laboratory Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, 110-744, Republic of Korea
| | - Moon-Woo Seong
- Department of Laboratory Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, 110-744, Republic of Korea
| | - Sung Sup Park
- Department of Laboratory Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, 110-744, Republic of Korea
| | - Ok Hwa Kim
- Department of Radiology, Woorisoa Children's Hospital, Seoul, 152-862, Republic of Korea
| | - Tae-Joon Cho
- Department of Orthopaedic Surgery, Seoul National University College of Medicine, Seoul, 110-744, Republic of Korea
| | - Richard M Pauli
- Department of Pediatrics, University of Wisconsin-Madison, Madison, Wisconsin, 53705
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