Premium
Multigenic truncation of the semaphorin–plexin pathway by a germline chromothriptic rearrangement associated with Moebius syndrome
Author(s) -
NazaryanPetersen Lusine,
Oliveira Inês R.,
Mehrjouy Mana M.,
Mendez Juan M. M.,
Bak Mads,
Bugge Merete,
Kalscheuer Vera M.,
Bache Iben,
Hancks Dustin C.,
Tommerup Niels
Publication year - 2019
Publication title -
human mutation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.981
H-Index - 162
eISSN - 1098-1004
pISSN - 1059-7794
DOI - 10.1002/humu.23775
Subject(s) - breakpoint , chromothripsis , biology , genetics , germline , gene , chromodomain , chromosomal translocation , dna , helicase , rna , genome instability , dna damage
Moebius syndrome (MBS) is a congenital disorder caused by paralysis of the facial and abducens nerves. Although a number of candidate genes have been suspected, so far only mutations in PLXND1 and REV3L are confirmed to cause MBS. Here, we fine mapped the breakpoints of a complex chromosomal rearrangement (CCR) 46,XY,t(7;8;11;13) in a patient with MBS, which revealed 41 clustered breakpoints with typical hallmarks of chromothripsis. Among 12 truncated protein‐coding genes, SEMA3A is known to bind to the MBS‐associated PLXND1. Intriguingly, the CCR also truncated PIK3CG, which in silico interacts with REVL3 encoded by the other known MBS‐gene REV3L, and with the SEMA3A/PLXND1 complex via FLT1. Additional studies of other complex rearrangements may reveal whether the multiple breakpoints in germline chromothripsis may predispose to complex multigenic disorders.