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Infertility and Recurrent Pregnancy Loss v0.75 MUSK Zornitza Stark Marked gene: MUSK as ready
Infertility and Recurrent Pregnancy Loss v0.75 MUSK Zornitza Stark Added comment: Comment when marking as ready: Severe fetal anomalies can lead to pregnancy loss; however, this is more in scope for the Fetal Anomalies panel.
Infertility and Recurrent Pregnancy Loss v0.75 MUSK Zornitza Stark Gene: musk has been classified as Amber List (Moderate Evidence).
Infertility and Recurrent Pregnancy Loss v0.75 MUSK Zornitza Stark Classified gene: MUSK as Amber List (moderate evidence)
Infertility and Recurrent Pregnancy Loss v0.75 MUSK Zornitza Stark Gene: musk has been classified as Amber List (Moderate Evidence).
Infertility and Recurrent Pregnancy Loss v0.63 MUSK Jasmine Chew gene: MUSK was added
gene: MUSK was added to Infertility and Pregnancy Loss. Sources: Literature
Mode of inheritance for gene: MUSK was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: MUSK were set to 25612909; 25537362; 31750350; 38566418
Phenotypes for gene: MUSK were set to Fetal akinesia deformation sequence 1, MIM# 208150
Review for gene: MUSK was set to AMBER
Added comment: i) PMID: 25612909- First to report homozygous frameshift variant p.Thr14Asnfs*9 in all affected fetuses with FADS in an affected family which also has two miscarriages. This variant leads to a complete loss of protein expression. Of note, incomplete loss of MuSK function will cause a CMS phenotype, whereas complete loss of function is lethal.

ii) PMID: 25537362- Homozygous missense variant p.Ile575Thr in the intracellular domain of MUSK in 11 out of 14 affected fetuses with lethal FADS (only 11 have DNA available) with a common ancestry from 11 families, suggesting founder effect.

iii) PMID: 31750350- Compound heterozygous variants in an affected fetus with lethal FADS (the mother also had previous abortion due to similarly affected fetus)

iv) Ding et al, 2020 (DOI: 10.22541/au.160097884.45196854)-novel compound heterozygous in a FADS affected fetus (mother also had two previous pregnancies with similarly affected fetuses, terminated)

v) PMID: 38566418- Reviewed previously reported MUSK pathogenic variants (46 patients in total with 29 unique disease-causing variants) appeared in four of the seven MuSK domains, including the Ig1, Frz-like, juxtamembrane, and kinase domains. Homozygous loss-of-function variants resulted in the most severe phenotype (FADS).

Note: Classified as amber since most of the reported cases were TOP rather than IUFD.
Sources: Literature