1
|
Zuo B, Xu H, Pan Z, Mao L, Feng H, Zeng B, Tang W, Lu W. A likely pathogenic POLD1 variant associated with mandibular hypoplasia, deafness, progeroid features, and lipodystrophy syndrome in a Chinese patient. BMC Med Genomics 2022; 15:220. [PMID: 36280868 PMCID: PMC9590123 DOI: 10.1186/s12920-022-01374-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 07/02/2022] [Accepted: 10/05/2022] [Indexed: 11/10/2022] Open
Abstract
Background Mandibular hypoplasia, deafness, progeroid features, and lipodystrophy syndrome (MDPL; OMIM# 615381) is a rare autosomal dominant disorder, with only a few reported cases worldwide. Herein, we describe the clinical features and underlying molecular etiology of MDPL syndrome in an 8-year-old Chinese patient. Methods We performed otological, endocrine, ultrasound, and radiological examinations, as well as genetic testing. Additionally, the literature concerning MDPL was reviewed to do a retrospective analysis of the pathogenesis, genotype–phenotype correlation, and clinical management. Results The proband was diagnosed with MDPL, presenting with mandibular hypoplasia, a characteristic facial appearance, lipodystrophy, and sensorineural hearing loss (SNHL). Whole-exome sequencing and bioinformatics analysis revealed a de novo missense variant in the POLD1 gene, NM_002691.4:c.3185A>G (NP_002682.2:p.(Gln1062Arg)). The retrospective analysis showed wide variation in the MDPL phenotype, but the most frequent features included mandibular hypoplasia, characteristic facial appearance, lipodystrophy, and SNHL. Conclusions This study supplements the mutational spectrum of POLD1. The genetic analysis contributes to the diagnosis of syndromic deafness, and it has a vital role in clinical management and future genetic consultation.
Collapse
Affiliation(s)
- Bin Zuo
- grid.412633.10000 0004 1799 0733Department of Otorhinolaryngology, The First Affiliated Hospital of Zhengzhou University, No. 1 Jian-she Road, Zhengzhou, 450052 China
| | - Hongen Xu
- grid.207374.50000 0001 2189 3846Precision Medicine Center, Academy of Medical Science, Zhengzhou University, No. 40 Daxuebei Road, Zhengzhou, 450052 China ,grid.452842.d0000 0004 8512 7544The Research and Application Center of Precision Medicine, The Second Affiliated Hospital of Zhengzhou University, No. 2 Jing-ba Road, Zhengzhou, 450014 China
| | - Zhaoyu Pan
- grid.412633.10000 0004 1799 0733Department of Otorhinolaryngology, The First Affiliated Hospital of Zhengzhou University, No. 1 Jian-she Road, Zhengzhou, 450052 China
| | - Lu Mao
- grid.207374.50000 0001 2189 3846Precision Medicine Center, Academy of Medical Science, Zhengzhou University, No. 40 Daxuebei Road, Zhengzhou, 450052 China
| | - Haifeng Feng
- grid.412633.10000 0004 1799 0733Department of Otorhinolaryngology, The First Affiliated Hospital of Zhengzhou University, No. 1 Jian-she Road, Zhengzhou, 450052 China
| | - Beiping Zeng
- grid.207374.50000 0001 2189 3846Precision Medicine Center, Academy of Medical Science, Zhengzhou University, No. 40 Daxuebei Road, Zhengzhou, 450052 China
| | - Wenxue Tang
- grid.452842.d0000 0004 8512 7544The Research and Application Center of Precision Medicine, The Second Affiliated Hospital of Zhengzhou University, No. 2 Jing-ba Road, Zhengzhou, 450014 China ,grid.207374.50000 0001 2189 3846Henan Institute of Medical and Pharmaceutical Sciences, Zhengzhou University, No. 40 Daxuebei Road, Zhengzhou, 450052 China
| | - Wei Lu
- grid.412633.10000 0004 1799 0733Department of Otorhinolaryngology, The First Affiliated Hospital of Zhengzhou University, No. 1 Jian-she Road, Zhengzhou, 450052 China
| |
Collapse
|