About PALB2
No gene-level summary was recorded for this case.
No variant summary was recorded for this case.
Five-step scale from benign to pathogenic. This variant is uncertain. Select a step to read what it means.
Uncertain.The recorded classification is uncertain significance.
Gene-level background from the recorded interpretation.
Words with a dotted underline have a short definition. Hover or tap them.No gene-level summary was recorded for this case.
The recorded framework is ClinGen PALB2 VCEP v1.2.0. The criteria and strengths shown below come from the saved assessment; this page does not recalculate the classification.
The applied criteria and their strengths are shown as assessed under the stated framework.
No pathogenic criterion marked as applied in the recorded assessment.
The PALB2 VCEP BP1_Supporting applies to ALL PALB2 missense variants. Per the VCEP: 'Based on published and unpublished functional studies, PALB2 has a low rate of missense variants that are non-functional in relevant assays. True missense pathogenic variants are not yet confirmed or refuted but are thought to be exceedingly rare.' NM_024675.3:c.3049G>A is a missense variant (p.Ala1017Thr) and therefore qualifies for BP1 at Supporting strength.
Richards et.al., 2015 - Combining rules v1.2.0 criteria-combination framework was evaluated deterministically with applied criteria: BP1 supporting benign; no rule matched the adjudicated criteria.
Evidence summaries and captured source records, where available. Missing entries should not be interpreted as negative findings.
gnomAD v4.1: 13 / 1,614,106 alleles. Recorded AF 8.05399e-06. Recorded homozygote count 0.
This variant is present in gnomAD v2.1 (AF= 3.97697e-06; MAF= 0.00040%, 1/251448 alleles, homozygotes = 0) and has highest observed frequency in the South Asian population (AF= 3.26627e-05; MAF= 0.00327%, 1/30616 alleles, homozygotes = 0).
Recorded SpliceAI maximum delta score: 0.000. Refer to the recorded PP3/BP4 rationale for interpretation.
7 Uncertain significance.
OncoKB did not identify variant-specific reviewed functional evidence for this variant; gene-level curated context is available for reviewer follow-up. PALB2, a scaffolding protein involved in DNA repair, is altered in various cancers.
This variant has not previously been reported in somatic cancers (COSMIC).
This variant does not lie in a statistically significant hotspot.
ACMG/AMP criteria under ClinGen PALB2 VCEP v1.2.0, with the data and sources behind each one.
26 criteria with recorded statuses: 1 met · 4 not met · 3 not assessed · 18 not applicable. Open any row for the full reasoning, the rule and the evidence behind it.
NM_024675.3:c.3049G>A (p.Ala1017Thr) is a missense variant in PALB2, a gene for which loss of function is an established mechanism of PALB2-related cancer predisposition (autosomal dominant) and Fanconi anemia complementation group N (autosomal recessive).
This variant has been classified as a Variant of Uncertain Significance by the ClinGen Hereditary Breast, Ovarian and Pancreatic Cancer Variant Curation Expert Panel (ClinVar Variation ID: 830187) and by seven clinical laboratories.
In gnomAD v4.1, this variant is present at an overall allele frequency of 0.000081% (13/1,614,106 alleles; grpmax FAF=0.0075%), with the highest frequency in the South Asian population (0.0132%; 12/91,078 alleles). The gnomAD v2.1 frequency is 0.00040% (1/251,448 alleles).
SpliceAI predicts no splicing impact (max delta score = 0.00). REVEL score is 0.202 and BayesDel score is -0.306, both in ranges consistent with a benign computational prediction, though in silico predictors are not used for missense variants under the PALB2 VCEP framework.
Under the PALB2 VCEP v1.2.0 framework, BP1 (Supporting) is met because all PALB2 missense variants are assigned BP1 at Supporting strength, given the very low rate of functional missense variants in PALB2. No other criteria are met under this VCEP framework.
The PM2 (Supporting) criterion is not met because the variant's gnomAD v4.1 frequency (0.00081%) exceeds the VCEP threshold of ≤0.000333%. Population frequency criteria BA1 (>0.1%) and BS1 (>0.01%) are also not met, as the grpmax FAF (0.0075%) falls below both thresholds.
PS4 is not met; although this variant has been observed in 3 cancer cases in a case-control study (Momozawa et al. 2018), no formal odds ratio or statistical significance test meeting the VCEP threshold (OR≥3, p≤0.05) has been computed for this individual variant.
Many ACMG/AMP criteria are not applicable under the PALB2 VCEP for missense variants, including PVS1 (not a null variant), PS1/PP3/BP4 (missense excluded), PM1 (missense mechanism not confirmed), PM5 (truncation/splice only), PP2 (missense mechanism not confirmed), and PS3/BS3 (not used in this VCEP).
Several criteria (PP1, BS2, BS4) remain not assessed due to absence of published co-segregation, healthy adult proband, or non-segregation data for this specific variant.
With only BP1_Supporting met and no pathogenic criteria met, this variant does not satisfy the criteria for Likely Benign (requires ≥2 benign supporting or 1 strong benign + ≥1 supporting benign). The variant remains classified as a Variant of Uncertain Significance (VUS) under the PALB2 VCEP v1.2.0 framework.
No criteria match.
Every interpreted variant in PALB2, mapped onto the exon structure of NM_024675.3. Select a row to find it on the plot.
| Protein | Location | Classification | Link |
|---|
| South Asian12 / 91,078 | 0.00013 |
| Remaining individuals1 / 62,508 | 1.6e-05 |
| South Asian1 / 30,616 | 3.3e-05 |
This variant is present in gnomAD v4.1 (AF= 8.05399e-06; MAF= 0.00081%, 13/1614106 alleles, homozygotes = 0) and has highest observed frequency in the South Asian population (AF= 0.000131755; MAF= 0.01318%, 12/91078 alleles, homozygotes = 0); grpmax FAF= 7.506e-05.
This variant is present in gnomAD v2.1 (AF= 3.97697e-06; MAF= 0.00040%, 1/251448 alleles, homozygotes = 0) and has highest observed frequency in the South Asian population (AF= 3.26627e-05; MAF= 0.00327%, 1/30616 alleles, homozygotes = 0).
SpliceAI predicts no significant splice impact for this variant (max delta score = 0.00). REVEL score = 0.202. BayesDel score = -0.305671.
9 paper records listed. No publication is explicitly linked to an applied criterion in the recorded metadata. None of the listed paper records explicitly indicates that the variant is named.
Screenshots represent source records captured during evidence collection. Select one to view the recorded source content.
The evidence statements recorded by the interpretation pipeline. They have not been reinterpreted by the page.
This variant is present in gnomAD v4.1 (AF= 8.05399e-06; MAF= 0.00081%, 13/1614106 alleles, homozygotes = 0) and has highest observed frequency in the South Asian population (AF= 0.000131755; MAF= 0.01318%, 12/91078 alleles, homozygotes = 0); grpmax FAF= 7.506e-05.
This variant is present in gnomAD v2.1 (AF= 3.97697e-06; MAF= 0.00040%, 1/251448 alleles, homozygotes = 0) and has highest observed frequency in the South Asian population (AF= 3.26627e-05; MAF= 0.00327%, 1/30616 alleles, homozygotes = 0).
This variant has been reported in ClinVar as Uncertain significance (7 clinical laboratories) and as Uncertain Significance by ClinGen Hereditary Breast, Ovarian and Pancreatic Cancer Variant Curation Expert Panel, ClinGen (expert panel). (ClinVarID = 830187)
SpliceAI predicts no significant splice impact for this variant (max delta score = 0.00). REVEL score = 0.202. BayesDel score = -0.305671.
OncoKB did not identify variant-specific reviewed functional evidence for this variant; gene-level curated context is available for reviewer follow-up. PALB2, a scaffolding protein involved in DNA repair, is altered in various cancers.
This variant does not lie in a statistically significant hotspot. This variant has not previously been reported in somatic cancers (COSMIC).
This variant does not lie in a statistically significant hotspot.