Severe microcephalyGene: MORC2
Comment on list classification: Though signs suggestive of neuropathy were observed in the cohort presented by Sacoto et al (PMID:32693025), these were not the predominant feature of the disease presentation or the primary indication for diagnostic testing. Inclusion on this panel would be of value for detecting such cases, and so this gene should be promoted to Green at the next GMS panel update (added 'for-review' tag)
Created: 8 Dec 2020, 3:58 p.m. | Last Modified: 8 Dec 2020, 3:58 p.m.
Panel Version: 2.51
MORC2 variants have commonly been associated with CMT, presenting axonal neuropathy with progressive weakness, muscle cramps and sensory impairment. However, Sacoto et al (2020) (PMID: 32693025) present a cohort of 20 individuals (19 kindreds) with a neurodevelopmental disorder characterised by DD, ID (18/20 - mild to severe), short stature (18/20), microcephaly (15/20) and variable craniofacial dysmorphisms. Severity of microcephaly relevant to this panel (≥ 3 SD) was observed in 7 subjects.
Created: 8 Dec 2020, 3:51 p.m.
Mode of inheritance
MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown
Developmental delay; Intellectual disability; Growth retardation; Microcephaly; Craniofacial dysmorphism; Charcot-Marie-Tooth disease, axonal, type 2Z, OMIM:616688
Gene: morc2 has been classified as Amber List (Moderate Evidence).
gene: MORC2 was added gene: MORC2 was added to Severe microcephaly. Sources: Literature for-review tags were added to gene: MORC2. Mode of inheritance for gene: MORC2 was set to MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown Publications for gene: MORC2 were set to 32693025 Phenotypes for gene: MORC2 were set to Developmental delay; Intellectual disability; Growth retardation; Microcephaly; Craniofacial dysmorphism; Charcot-Marie-Tooth disease, axonal, type 2Z, OMIM:616688 Review for gene: MORC2 was set to GREEN