PUBLICATION

SMCHD1 mutations associated with a rare muscular dystrophy can also cause isolated arhinia and Bosma arhinia microphthalmia syndrome

Authors
Shaw, N.D., Brand, H., Kupchinsky, Z.A., Bengani, H., Plummer, L., Jones, T.I., Erdin, S., Williamson, K.A., Rainger, J., Stortchevoi, A., Samocha, K., Currall, B.B., Dunican, D.S., Collins, R.L., Willer, J.R., Lek, A., Lek, M., Nassan, M., Pereira, S., Kammin, T., Lucente, D., Silva, A., Seabra, C.M., Chiang, C., An, Y., Ansari, M., Rainger, J.K., Joss, S., Smith, J.C., Lippincott, M.F., Singh, S.S., Patel, N., Jing, J.W., Law, J.R., Ferraro, N., Verloes, A., Rauch, A., Steindl, K., Zweier, M., Scheer, I., Sato, D., Okamoto, N., Jacobsen, C., Tryggestad, J., Chernausek, S., Schimmenti, L.A., Brasseur, B., Cesaretti, C., García-Ortiz, J.E., Buitrago, T.P., Silva, O.P., Hoffman, J.D., Mühlbauer, W., Ruprecht, K.W., Loeys, B.L., Shino, M., Kaindl, A.M., Cho, C.H., Morton, C.C., Meehan, R.R., van Heyningen, V., Liao, E.C., Balasubramanian, R., Hall, J.E., Seminara, S.B., Macarthur, D., Moore, S.A., Yoshiura, K.I., Gusella, J.F., Marsh, J.A., Graham, J.M., Lin, A.E., Katsanis, N., Jones, P.L., Crowley, W.F., Davis, E.E., FitzPatrick, D.R., Talkowski, M.E.
ID
ZDB-PUB-170110-3
Date
2017
Source
Nature Genetics   49(2): 238-248 (Journal)
Registered Authors
Davis, Erica, Katsanis, Nicholas, Lek, Angela, Liao, Eric, Meehan, Richard, Schimmenti, Lisa A., van Heyningen, Veronica, Willer, Jason
Keywords
Genetic linkage study, Genomics, Morphogenesis
MeSH Terms
  • Adolescent
  • Child
  • Child, Preschool
  • Choanal Atresia/genetics*
  • Chromosomal Proteins, Non-Histone/genetics*
  • Female
  • Genetic Predisposition to Disease/genetics*
  • Humans
  • Infant
  • Male
  • Microphthalmos/genetics*
  • Muscular Dystrophies/genetics*
  • Mutation/genetics*
  • Nose/abnormalities*
  • Phenotype
PubMed
28067909 Full text @ Nat. Genet.
Abstract
Arhinia, or absence of the nose, is a rare malformation of unknown etiology that is often accompanied by ocular and reproductive defects. Sequencing of 40 people with arhinia revealed that 84% of probands harbor a missense mutation localized to a constrained region of SMCHD1 encompassing the ATPase domain. SMCHD1 mutations cause facioscapulohumeral muscular dystrophy type 2 (FSHD2) via a trans-acting loss-of-function epigenetic mechanism. We discovered shared mutations and comparable DNA hypomethylation patterning between these distinct disorders. CRISPR/Cas9-mediated alteration of smchd1 in zebrafish yielded arhinia-relevant phenotypes. Transcriptome and protein analyses in arhinia probands and controls showed no differences in SMCHD1 mRNA or protein abundance but revealed regulatory changes in genes and pathways associated with craniofacial patterning. Mutations in SMCHD1 thus contribute to distinct phenotypic spectra, from craniofacial malformation and reproductive disorders to muscular dystrophy, which we speculate to be consistent with oligogenic mechanisms resulting in pleiotropic outcomes.
Genes / Markers
Figures
Show all Figures
Expression
Phenotype
Mutation and Transgenics
Human Disease / Model Data
Sequence Targeting Reagents
Fish
Antibodies
Orthology
Engineered Foreign Genes
Mapping
Errata and Notes
This article is corrected by ZDB-PUB-220906-75 .