Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP6
The NM_000548.5(TSC2):c.994G>A(p.Glu332Lys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000274 in 1,461,792 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).
TSC2 (HGNC:12363): (TSC complex subunit 2) This gene is a tumor suppressor gene that encodes the growth inhibitory protein tuberin. Tuberin interacts with hamartin to form the TSC protein complex which functions in the control of cell growth. This TSC protein complex negatively regulates mammalian target of rapamycin complex 1 (mTORC1) signaling which is a major regulator of anabolic cell growth. Mutations in this gene have been associated with tuberous sclerosis and lymphangioleiomyomatosis. [provided by RefSeq, May 2022]
Verdict is Uncertain_significance. Variant got 1 ACMG points.
PM2
Very rare variant in population databases, with high coverage;
BP6
Variant 16-2060688-G-A is Benign according to our data. Variant chr16-2060688-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 468197.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=1, Benign=1, Uncertain_significance=1}.
Review Status: criteria provided, single submitter
Collection Method: clinical testing
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Aug 27, 2024
Myriad Genetics, Inc.
Significance: Likely benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing
This variant is considered likely benign. This variant has been observed at a population frequency that is significantly greater than expected given the associated disease prevalence and penetrance. -
Review Status: criteria provided, single submitter
Collection Method: clinical testing
The p.E332K variant (also known as c.994G>A), located in coding exon 10 of the TSC2 gene, results from a G to A substitution at nucleotide position 994. The glutamic acid at codon 332 is replaced by lysine, an amino acid with similar properties. This amino acid position is well conserved in available vertebrate species. In addition, the in silico prediction for this alteration is inconclusive. Based on the available evidence, the clinical significance of this variant remains unclear. -
Gain of ubiquitination at E332 (P = 0.0203);Gain of ubiquitination at E332 (P = 0.0203);Gain of ubiquitination at E332 (P = 0.0203);.;Gain of ubiquitination at E332 (P = 0.0203);Gain of ubiquitination at E332 (P = 0.0203);Gain of ubiquitination at E332 (P = 0.0203);Gain of ubiquitination at E332 (P = 0.0203);.;Gain of ubiquitination at E332 (P = 0.0203);Gain of ubiquitination at E332 (P = 0.0203);Gain of ubiquitination at E332 (P = 0.0203);Gain of ubiquitination at E332 (P = 0.0203);Gain of ubiquitination at E332 (P = 0.0203);.;