rs766487430
Variant summary
Our verdict is Likely benign. Variant got -1 ACMG points: 0P and 1B. BP6
The NM_024675.4(PALB2):c.212-10delT variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000802 in 1,545,694 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).
Frequency
Consequence
NM_024675.4 intron
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Likely_benign. Variant got -1 ACMG points.
Transcripts
RefSeq
Ensembl
Frequencies
GnomAD3 genomes AF: 0.000126 AC: 19AN: 150446Hom.: 0 Cov.: 32
GnomAD4 exome AF: 0.0000753 AC: 105AN: 1395248Hom.: 0 Cov.: 26 AF XY: 0.0000793 AC XY: 55AN XY: 693170
GnomAD4 genome AF: 0.000126 AC: 19AN: 150446Hom.: 0 Cov.: 32 AF XY: 0.000123 AC XY: 9AN XY: 73390
ClinVar
Submissions by phenotype
not provided Uncertain:2Benign:2
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The PALB2 c.212-10del variant has not been reported in individuals with PALB2-related conditions in the published literature. The frequency of this variant in the general population, 0.00057 (12/21208 chromosomes (Genome Aggregation Database, http://gnomad.broadinstitute.org)), is uninformative in the assessment of its pathogenicity. Analysis of this variant using software algorithms for the prediction of the effect of nucleotide changes on splicing yielded predictions that this variant does not affect PALB2 mRNA splicing. Based on the available information, we are unable to determine the clinical significance of this variant. -
Variant summary: The PALB2 c.212-10delT variant involves the alteration of a non-conserved intronic nucleotide. One in silico tool predicts a benign outcome for this variant. 5/5 splice prediction tools predict no significant impact on normal splicing and ESE finder predicts no alterations to ESE sites at the locus. However, these predictions have yet to be confirmed by functional studies. This variant was found in the large control database ExAC in 3 of 64868 control chromosomes from all ethnicities, but was predominantly observed in the African subpopulation at a frequency of 0.000315 (2/6352). This frequency is about 2 times the estimated maximal expected allele frequency of a pathogenic PALB2 variant (0.0001563), suggesting this may be a benign polymorphism found primarily in the populations of African origin. In addition, two clinical diagnostic laboratories have classified this variant as likely benign or benign. To our knowledge, the variant of interest has not been reported in affected individuals via publications, nor has it been evaluated for functional impact by in vivo/vitro studies. Because of the absence of clinical information and the lack of functional studies, the variant is classified as a variant of uncertain significance (VUS)-possibly benign until additional information becomes available. -
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Hereditary cancer-predisposing syndrome Benign:3
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not specified Benign:1
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Familial cancer of breast Benign:1
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at