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.
PALB2 VCEP BP1 applies to all missense variants. Based on published and unpublished functional studies, PALB2 has a low rate of missense variants that are non-functional, and true pathogenic missense variants are thought to be exceedingly rare.
Richards et.al., 2015 - Combining rules v1.2.0 criteria-combination framework was evaluated deterministically with applied criteria: BP1 supporting; 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: 121 / 1,613,326 alleles. Recorded AF 7.50003e-05. Recorded homozygote count 0.
This variant is present in gnomAD v2.1 (AF= 0.000106259; MAF= 0.01063%, 30/282328 alleles, homozygotes = 0) and has highest observed frequency in the Ashkenazi Jewish population (AF= 0.000386473; MAF= 0.03865%, 4/10350 alleles, homozygotes = 0); grpmax FAF= 0.00012362.
Not available in gnomAD-Canada v1.0.
Recorded SpliceAI maximum delta score: 0.000. Refer to the recorded PP3/BP4 rationale for interpretation.
9 Uncertain significance · 9 Likely benign · 1 Benign. ClinVar API review status: criteria provided, conflicting classifications.
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.
27 criteria with recorded statuses: 1 met · 5 not met · 2 not assessed · 19 not applicable. Open any row for the full reasoning, the rule and the evidence behind it.
PALB2 VCEP BP1_Supporting is applied as this is a missense variant; true pathogenic missense variants in PALB2 are thought to be exceedingly rare.
This variant is present in gnomAD v4.1 at an allele frequency of 0.000075 (121/1,613,326 alleles), which exceeds the VCEP PM2 threshold of 0.00000333 but does not meet BS1 (>0.01%) or BA1 (>0.1%) benign population thresholds.
The variant has been observed in multiple cohorts at frequencies comparable to population controls (Balia 2010: 1/95 cases and 1/50 controls; Catucci 2012: 1/96 cases; Hellebrand 2011: 1/818 cases classified as polymorphism).
In silico predictors REVEL (0.014) and BayesDel (-0.648) are consistent with a benign interpretation, though PALB2 VCEP does not apply PP3/BP4 for missense variants as published predictors have not achieved functional outcome prediction.
No pathogenic criteria are met. With only BP1_Supporting (benign supporting) applied, the overall classification under PALB2 VCEP v1.2.0 is Uncertain Significance (VUS).
No criteria match.
Every interpreted variant in PALB2, mapped onto the exon structure of NM_024675.4. Select a row to find it on the plot.
| Protein | Location | Classification | Link |
|---|
| Ashkenazi Jewish17 / 29,588 | 0.00057 |
| Remaining individuals6 / 62,438 | 9.6e-05 |
| European (non-Finnish)95 / 1,179,698 | 8.1e-05 |
| Admixed American2 / 59,856 | 3.3e-05 |
| South Asian1 / 91,040 | 1.1e-05 |
| Ashkenazi Jewish4 / 10,350 | 0.00039 |
| European (non-Finnish)23 / 128,918 | 0.00018 |
| Remaining individuals1 / 7,212 | 0.00014 |
| Admixed American2 / 35,334 | 5.7e-05 |
This variant is present in gnomAD v4.1 (AF= 7.50003e-05; MAF= 0.00750%, 121/1613326 alleles, homozygotes = 0) and has highest observed frequency in the Ashkenazi Jewish population (AF= 0.000574557; MAF= 0.05746%, 17/29588 alleles, homozygotes = 0); grpmax FAF= 6.725e-05.
This variant is present in gnomAD v2.1 (AF= 0.000106259; MAF= 0.01063%, 30/282328 alleles, homozygotes = 0) and has highest observed frequency in the Ashkenazi Jewish population (AF= 0.000386473; MAF= 0.03865%, 4/10350 alleles, homozygotes = 0); grpmax FAF= 0.00012362.
Not available in gnomAD-Canada v1.0.
SpliceAI predicts no significant splice impact for this variant (max delta score = 0.00). REVEL score = 0.014. BayesDel score = -0.648329.
9 paper records listed. No publication is explicitly linked to an applied criterion in the recorded metadata.
c.1001A [ G... p.Tyr334Cys... Missense... Previously reported... 95/1/0... B/T/N
Table 2; Results section PALB2 genotyping
the VUS in the gene PALB2 c.1001A>G, identified in ID85, showed LOH in the tumor.
Table 2; Results section Segregation and LOH Analysis; Discussion
Y334C... frequency... was 0.5%, the same as found in the cases.
Table 1; Results paragraph 'mutational analysis'
c.1001A>G... Y334C... no... high... benign... tolerated... polymorphism
Supp. Table S2 (missense variants); line 703-709
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= 7.50003e-05; MAF= 0.00750%, 121/1613326 alleles, homozygotes = 0) and has highest observed frequency in the Ashkenazi Jewish population (AF= 0.000574557; MAF= 0.05746%, 17/29588 alleles, homozygotes = 0); grpmax FAF= 6.725e-05.
This variant is present in gnomAD v2.1 (AF= 0.000106259; MAF= 0.01063%, 30/282328 alleles, homozygotes = 0) and has highest observed frequency in the Ashkenazi Jewish population (AF= 0.000386473; MAF= 0.03865%, 4/10350 alleles, homozygotes = 0); grpmax FAF= 0.00012362.
Not available in gnomAD-Canada v1.0.
This variant has been reported in ClinVar as Uncertain significance (9 clinical laboratories) and as Likely benign (9 clinical laboratories) and as Benign (1 clinical laboratory). (ClinVarID = 126581)
SpliceAI predicts no significant splice impact for this variant (max delta score = 0.00). REVEL score = 0.014. BayesDel score = -0.648329.
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.