title: Mutations causing familial biparental hydatidiform mole implicate c6orf221 as a possible regulator of genomic imprinting in the human oocyte.
abstract: Familial biparental hydatidiform mole (FBHM) is the only known pure maternal-effect recessive inherited disorder in humans. Affected women, although developmentally normal themselves, suffer repeated pregnancy loss because of the development of the conceptus into a complete hydatidiform mole in which extraembryonic trophoblastic tissue develops but the embryo itself suffers early demise. This developmental phenotype results from a genome-wide failure to correctly specify or maintain a maternal epigenotype at imprinted loci. Most cases of FBHM result from mutations of NLRP7, but genetic heterogeneity has been demonstrated. Here, we report biallelic mutations of C6orf221 in three families with FBHM. The previously described biological properties of their respective gene families suggest that NLRP7 and C6orf221 may interact as components of an oocyte complex that is directly or indirectly required for determination of epigenetic status on the oocyte genome.
authors: Section of Genetics, Leeds Institute of Molecular Medicine, St. James's University Hospital, Wellcome Trust Brenner Building, UK.
authors: David A
authors: DA
authors: Parry
authors: Clare V
authors: CV
authors: Logan
authors: Bruce E
authors: BE
authors: Hayward
authors: Michael
authors: M
authors: Shires
authors: Hanène
authors: H
authors: Landolsi
authors: Christine
authors: C
authors: Diggle
authors: Ian
authors: I
authors: Carr
authors: Cécile
authors: C
authors: Rittore
authors: Isabelle
authors: I
authors: Touitou
authors: Laurent
authors: L
authors: Philibert
authors: Rosemary A
authors: RA
authors: Fisher
authors: Masoumeh
authors: M
authors: Fallahian
authors: John D
authors: JD
authors: Huntriss
authors: Helen M
authors: HM
authors: Picton
authors: Saghira
authors: S
authors: Malik
authors: Graham R
authors: GR
authors: Taylor
authors: Colin A
authors: CA
authors: Johnson
authors: David T
authors: DT
authors: Bonthron
authors: Eamonn G
authors: EG
authors: Sheridan
mesh_terms: D048868:Adaptor Proteins, Signal Transducing / Q000235:genetics / Q000378:metabolism*; D001483:Base Sequence; D002460:Cell Line; D005260:Female; D005808:Genes, Recessive / Q000235:genetics; D018392:Genomic Imprinting / Q000235:genetics / Q000502:physiology*; D006801:Humans; D006828:Hydatidiform Mole / Q000235:genetics*; D007150:Immunohistochemistry; D008969:Molecular Sequence Data; D009154:Mutation / Q000235:genetics; D009865:Oocytes / Q000378:metabolism / Q000502:physiology*; D010375:Pedigree; D011247:Pregnancy; D011506:Proteins / Q000235:genetics* / Q000378:metabolism*; D016415:Sequence Alignment; D017422:Sequence Analysis, DNA
chemical_list: D048868:Adaptor Proteins, Signal Transducing; C568062:KHDC3L protein, human; C502448:NLRP7 protein, human; D011506:Proteins