Our verdict is Uncertain significance. Variant got 2 ACMG points: 3P and 1B. PM2PP3BS2_Supporting
The NM_182961.4(SYNE1):āc.83T>Cā(p.Val28Ala) variant causes a missense change. The variant allele was found at a frequency of 0.00000342 in 1,461,618 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.
SYNE1 (HGNC:17089): (spectrin repeat containing nuclear envelope protein 1) This gene encodes a spectrin repeat containing protein expressed in skeletal and smooth muscle, and peripheral blood lymphocytes, that localizes to the nuclear membrane. Mutations in this gene have been associated with autosomal recessive spinocerebellar ataxia 8, also referred to as autosomal recessive cerebellar ataxia type 1 or recessive ataxia of Beauce. Alternatively spliced transcript variants encoding different isoforms have been described. [provided by RefSeq, Jul 2008]
Verdict is Uncertain_significance. Variant got 2 ACMG points.
PM2
Very rare variant in population databases, with high coverage;
PP3
MetaRNN computational evidence supports a deleterious effect, 0.772
BS2
High AC in GnomAdExome4 at 5 AD gene. Variant has AC lower than other variant known as pathogenic in the gene, so the strength is limited to Supporting.
Gain of disorder (P = 0.0606);.;Gain of disorder (P = 0.0606);Gain of disorder (P = 0.0606);Gain of disorder (P = 0.0606);Gain of disorder (P = 0.0606);Gain of disorder (P = 0.0606);Gain of disorder (P = 0.0606);.;