What does this research mean for the field?

Early-onset MORC2-associated disorders segregate into two principal neurological phenotypes—a predominantly neuromuscular form and a central nervous system-predominant form—with the neuromuscular-defining p.Ser87Leu variant uniquely characterized by reduced MORC2 protein levels. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To characterize the clinical and mutational spectrum of MORC2-associated disorders and evaluate variant-specific effects on protein expression.

August 30, 2026Journal of Medical GeneticsOpen Access

Exploring the clinical and mutational spectrum of MORC2 -associated disorders

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Authors

AMAysylu Murtazina ETEugenii Tatarsky IVIuliia Viakhireva

Discussion

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Overview

Observational study reveals distinct neuromuscular and central nervous system phenotypes in MORC2-associated disorders, indicating divergent mechanistic pathways across variants.

Key Points

To characterize the clinical and mutational spectrum of MORC2-associated disorders and evaluate variant-specific effects on protein expression.
Collected and analyzed clinical and neuroimaging data from a cohort of 16 patients (N=16) with MORC2 mutations.
Generated wild-type and mutant expression vectors carrying 10 patient-derived variants and 2 novel variants, transfecting them into HEK293T cells.
Quantified MORC2 protein expression levels across all variants using Western blot analysis.
Identified MORC2 variants, including four novel variants, with early-onset presentations segregating into two clusters: neuromuscular-predominant and central nervous system-predominant phenotypes.
The p.Ser87Leu variant characterizing the neuromuscular subgroup demonstrated a statistically significant reduction in MORC2 protein expression compared to wild-type.
Overall protein expression levels showed no statistically significant difference between variants causing Charcot-Marie-Tooth disease type 2Z and those causing DIGFAN.

Cite This Study

Murtazina et al. (2026) studied this question.

synapsesocial.com/papers/6a93f0b06c1a8fb52e79d023 https://doi.org/10.1136/jmg-2025-110787

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August 30, 2026Journal of Medical GeneticsOpen Access

Exploring the clinical and mutational spectrum of MORC2 -associated disorders

View Full Paper

Ask AI

Bookmark

Authors

AMAysylu Murtazina ETEugenii Tatarsky IVIuliia Viakhireva

Discussion

Member takes

Overview

Observational study reveals distinct neuromuscular and central nervous system phenotypes in MORC2-associated disorders, indicating divergent mechanistic pathways across variants.

Key Points

To characterize the clinical and mutational spectrum of MORC2-associated disorders and evaluate variant-specific effects on protein expression.
Collected and analyzed clinical and neuroimaging data from a cohort of 16 patients (N=16) with MORC2 mutations.
Generated wild-type and mutant expression vectors carrying 10 patient-derived variants and 2 novel variants, transfecting them into HEK293T cells.
Quantified MORC2 protein expression levels across all variants using Western blot analysis.
Identified MORC2 variants, including four novel variants, with early-onset presentations segregating into two clusters: neuromuscular-predominant and central nervous system-predominant phenotypes.
The p.Ser87Leu variant characterizing the neuromuscular subgroup demonstrated a statistically significant reduction in MORC2 protein expression compared to wild-type.
Overall protein expression levels showed no statistically significant difference between variants causing Charcot-Marie-Tooth disease type 2Z and those causing DIGFAN.

Cite This Study

Murtazina et al. (2026) studied this question.

synapsesocial.com/papers/6a93f0b06c1a8fb52e79d023 https://doi.org/10.1136/jmg-2025-110787

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