Somatic mosaic monosomy 7 and UPD7q in a child with MIRAGE syndrome caused by a novel SAMD9 mutation.

Abstract:

:MIRAGE syndrome caused by mutations in SAMD9 is associated with potential loss of chromosome 7 (-7/7q-) and an increased risk to develop myelodysplastic syndrome (MDS). We report a case of MIRAGE syndrome, caused by a novel SAMD9 mutation p.Leu641Pro, leading to characteristic clinical features as well as to the coexistence of cells with monosomy 7 (20%) and with uniparental disomy of long arm of chromosome 7 (UPD7q). In contrast to previously reported MIRAGE patients with -7/7q- developing MDS, our patient achieved complete cytogenetic remission of monosomy 7. As UPD7q remained unchanged, it seems to be a protective factor against MDS.

journal_name

Pediatr Blood Cancer

journal_title

Pediatric blood & cancer

authors

Csillag B,Ilencikova D,Meissl M,Webersinke G,Laccone F,Narumi S,Haas O,Duba HC

doi

10.1002/pbc.27589

subject

Has Abstract

pub_date

2019-04-01 00:00:00

pages

e27589

issue

4

eissn

1545-5009

issn

1545-5017

journal_volume

66

pub_type

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