About ATM
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 ATM VCEP v1.5.0. 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.
This variant is present at extremely low frequency in gnomAD v4.1 (total AF=2.49e-06; 4/1,605,254 alleles; grpmax FAF=2.8e-07; 0 homozygotes), meeting the ATM VCEP PM2_Supporting threshold of ≤0.001% (≤0.00001) in the gnomAD v4 dataset.
No benign criterion marked as applied in the recorded assessment.
Richards et.al., 2015 - Combining rules v1.5.0 criteria-combination framework was evaluated deterministically with applied criteria: PM2 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: 4 / 1,605,254 alleles. Recorded AF 2.49182e-06. Recorded homozygote count 0.
This variant is present in gnomAD v2.1 (AF= 3.18959e-05; MAF= 0.00319%, 1/31352 alleles, homozygotes = 0) and has highest observed frequency in the European (non-Finnish) population (AF= 6.48677e-05; MAF= 0.00649%, 1/15416 alleles, homozygotes = 0).
Absent from gnomAD-Canada v1.0.
Recorded SpliceAI maximum delta score: 0.010. Refer to the recorded PP3/BP4 rationale for interpretation.
6 Uncertain significance.
OncoKB did not identify variant-specific reviewed functional evidence for this variant; gene-level curated context is available for reviewer follow-up. ATM, a kinase involved in the DNA damage response, is mutated in various solid and hematologic malignancies.
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 ATM VCEP v1.5.0, with the data and sources behind each one.
29 criteria with recorded statuses: 1 met · 12 not met · 0 not assessed · 16 not applicable. Open any row for the full reasoning, the rule and the evidence behind it.
NM_000051.4:c.8261C>T (p.Thr2754Ile) is a missense variant in ATM, a gene for which loss of function is an established mechanism of disease in ataxia-telangiectasia and in which germline variants confer susceptibility to breast, ovarian, and pancreatic cancer (ClinGen HBOP VCEP v1.5.0).
This variant is present at extremely low frequency in population databases: gnomAD v4.1 reports 4 heterozygous carriers among 1,605,254 alleles (total AF=2.49e-06; grpmax FAF=2.8e-07) with no homozygotes observed, and gnomAD v2.1 reports 1 heterozygous carrier among 31,352 alleles (AF=3.19e-05). It is absent from gnomAD-Canada v1.0.
In silico predictors are inconclusive: REVEL score is 0.633 (below the ATM VCEP PP3 threshold of >0.7333 but above the BP4 threshold of ≤0.249), BayesDel score is -0.0763065, and SpliceAI predicts no significant splice impact (max delta score = 0.01).
This variant has been reported in ClinVar as Uncertain Significance by 6 clinical laboratories (ClinVar Variation ID: 127457), with no expert panel classifications available. No functional studies, case-control analyses, segregation data, or observations in trans with pathogenic ATM variants have been identified for this specific variant.
The variant is absent from COSMIC (no somatic cancer reports) and does not fall within a statistically significant Cancer Hotspot. OncoKB reports no reviewed functional evidence and classifies this variant as having Unknown Oncogenic Effect.
Under the ClinGen HBOP VCEP for ATM v1.5.0, only PM2_Supporting is met (allele frequency ≤0.001% in gnomAD v4). All other applicable criteria are either not met or not applicable. With a single supporting-level pathogenic criterion and no benign criteria met, the variant is classified as Uncertain Significance (VUS) per the ACMG/AMP 2015 combining rules as adopted by the ATM VCEP.
No criteria match.
Every interpreted variant in ATM, mapped onto the exon structure of NM_000051.4. Select a row to find it on the plot.
| Protein | Location | Classification | Link |
|---|
| East Asian1 / 44,826 | 2.2e-05 |
| African/African American1 / 74,682 | 1.3e-05 |
| European (non-Finnish)2 / 1,172,242 | 1.7e-06 |
| European (non-Finnish)1 / 15,416 | 6.5e-05 |
This variant is present in gnomAD v4.1 (AF= 2.49182e-06; MAF= 0.00025%, 4/1605254 alleles, homozygotes = 0) and has highest observed frequency in the East Asian population (AF= 2.23085e-05; MAF= 0.00223%, 1/44826 alleles, homozygotes = 0); grpmax FAF= 2.8e-07.
This variant is present in gnomAD v2.1 (AF= 3.18959e-05; MAF= 0.00319%, 1/31352 alleles, homozygotes = 0) and has highest observed frequency in the European (non-Finnish) population (AF= 6.48677e-05; MAF= 0.00649%, 1/15416 alleles, homozygotes = 0).
Absent from gnomAD-Canada v1.0.
SpliceAI predicts no significant splice impact for this variant (max delta score = 0.01). REVEL score = 0.633. BayesDel score = -0.0763065.
10 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= 2.49182e-06; MAF= 0.00025%, 4/1605254 alleles, homozygotes = 0) and has highest observed frequency in the East Asian population (AF= 2.23085e-05; MAF= 0.00223%, 1/44826 alleles, homozygotes = 0); grpmax FAF= 2.8e-07.
This variant is present in gnomAD v2.1 (AF= 3.18959e-05; MAF= 0.00319%, 1/31352 alleles, homozygotes = 0) and has highest observed frequency in the European (non-Finnish) population (AF= 6.48677e-05; MAF= 0.00649%, 1/15416 alleles, homozygotes = 0).
Absent from gnomAD-Canada v1.0.
This variant has been reported in ClinVar as Uncertain significance (6 clinical laboratories). (ClinVarID = 127457)
SpliceAI predicts no significant splice impact for this variant (max delta score = 0.01). REVEL score = 0.633. BayesDel score = -0.0763065.
OncoKB did not identify variant-specific reviewed functional evidence for this variant; gene-level curated context is available for reviewer follow-up. ATM, a kinase involved in the DNA damage response, is mutated in various solid and hematologic malignancies.
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.