rs182572555
Variant summary
Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_ModerateBP6_ModerateBS1BS2
The NM_170606.3(KMT2C):c.13522C>T(p.Pro4508Ser) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000929 in 1,614,232 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).
Frequency
Consequence
NM_170606.3 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Benign. Variant got -12 ACMG points.
Transcripts
RefSeq
Ensembl
Frequencies
GnomAD3 genomes AF: 0.000453 AC: 69AN: 152220Hom.: 1 Cov.: 33
GnomAD3 exomes AF: 0.000223 AC: 56AN: 251222Hom.: 0 AF XY: 0.000177 AC XY: 24AN XY: 135752
GnomAD4 exome AF: 0.0000554 AC: 81AN: 1461894Hom.: 0 Cov.: 32 AF XY: 0.0000481 AC XY: 35AN XY: 727248
GnomAD4 genome AF: 0.000453 AC: 69AN: 152338Hom.: 1 Cov.: 33 AF XY: 0.000725 AC XY: 54AN XY: 74492
ClinVar
Submissions by phenotype
not provided Benign:2
The KMT2C p.P4508S variant was not identified in the literature but was identified in dbSNP (ID: rs182572555) and ClinVar (submitted by ITMI, no classification provided). The variant was identified in control databases in 58 of 282632 chromosomes at a frequency of 0.0002052, and was observed at the highest frequency in the Latino population in 53 of 35436 chromosomes (freq: 0.001496) (Genome Aggregation Database March 6, 2019, v2.1.1). This frequency is greater than expected for the rare, autosomal dominant Kleefstra syndrome 2 associated with KMT2C variants. The p.P4508 residue is conserved in mammals and more distantly related organisms however computational analyses (MUT Assesor, PolyPhen-2, SIFT, MutationTaster, Revel, FATHMM, MetaLR, DANN) provide inconsistent predictions regarding the impact to the protein; this information is not very predictive of pathogenicity. The variant occurs outside of the splicing consensus sequence and in silico or computational prediction software programs (Splice AI exome) do not predict a difference in splicing. In summary, based on the above information the clinical significance of this variant cannot be determined with certainty at this time although we would lean towards a more benign role for this variant. This variant is classified as likely benign. -
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KMT2C-related disorder Benign:1
This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -
not specified Other:1
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at