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Oncotarget. 2017 Apr 18;8(16):25864-25871. doi: 10.18632/oncotarget.16531.

BMPR1B mutation causes Pierre Robin sequence.

Yang Y1,2, Yuan J1,3, Yao X1, Zhang R1,4, Yang H1,4, Zhao R1, Guo J1,5, Jin K1, Mei H1, Luo Y1, Zhao L1, Tu M1, Zhu Y1,2.

Author information

1
The Laboratory of Genetics and Metabolism, Hunan Children's Research Institute , Hunan Children's Hospital, University of South China, Changsha, China.
2
Institute of Emergency Medicine, People's Hospital of Hunan Province, Changsha, China.
3
BGI-Shenzhen, Shenzhen, China.
4
Division of Neonatology, Hunan Children's Hospital, University of South China, Changsha, China.
5
State Key Laboratory of Medical Genetics, Central South University, Changsha, China.

Abstract

BACKGROUND:

We investigated a large family with Pierre Robin sequence (PRS).

AIM OF THE STUDY:

This study aims to determine the genetic cause of PRS.

RESULTS:

The reciprocal translocation t(4;6)(q22;p21) was identified to be segregated with PRS in a three-generation family. Whole-genome sequencing and Sanger sequencing successfully detected breakpoints in the intragenic regions of BMRP1B and GRM4. We hypothesized that PRS in this family was caused by (i) haploinsufficiency for BMPR1B or (ii) a gain of function mechanism mediated by the BMPR1B-GRM4 fusion gene. In an unrelated family, we identified another BMPR1B-splicing mutation that co-segregated with PRS.

CONCLUSION:

We detected two BMPR1B mutations in two unrelated PRS families, suggesting that BMPR1B disruption is probably a cause of human PRS.

METHODS:

GTG banding, comparative genomic hybridization, whole-genome sequencing, and Sanger sequencing were performed to identify the gene causing PRS.

KEYWORDS:

BMP signalling; BMPR1B; Chromosome Section; Pierre Robin sequence; cleft palate; gene fusion

PMID:
28418932
PMCID:
PMC5432222
DOI:
10.18632/oncotarget.16531
[Indexed for MEDLINE]
Free PMC Article

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