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.
c.5178-28T>A is absent from all queried population databases: gnomAD v2.1 (exomes), gnomAD v4.1 (genomes+exomes), and gnomAD-Canada v1.0 (HostSeq genomes). Per the ATM VCEP 1.5.0, PM2_Supporting applies when the variant frequency is ≤0.001% in the gnomAD v4 dataset. Complete absence in >800,000 alleles satisfies this threshold.
SpliceAI predicts a splicing impact for this intronic variant with a max delta score of 0.27 (DS_AL=0.27, DS_DL=0.26), exceeding the ATM VCEP 1.5.0 threshold of ≥0.2 for PP3. This criterion applies to intronic variants outside the donor and acceptor ±1,2 sites. The SpliceAI prediction suggests the variant may create an alternative splice acceptor or donor site. Per the VCEP, PP3 for splice predictions is applied at the Supporting strength level only.
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, PP3 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 allele counts were not recorded for this variant.
Absent from gnomAD v2.1.
Absent from gnomAD-Canada v1.0.
Recorded SpliceAI maximum delta score: 0.270. Refer to the recorded PP3/BP4 rationale for interpretation.
A ClinVar laboratory submission summary was not recorded.
No standalone functional evidence summary is recorded in evidence_summary.functional.
This variant has not previously been reported in somatic cancers (COSMIC).
ACMG/AMP criteria under ClinGen ATM VCEP v1.5.0, with the data and sources behind each one.
29 criteria with recorded statuses: 2 met · 6 not met · 7 not assessed · 14 not applicable. Open any row for the full reasoning, the rule and the evidence behind it.
c.5178-28T>A is a rare deep intronic variant in ATM, located 28 bp upstream of the exon 35 acceptor splice site, that is absent from all queried population databases including gnomAD v2.1, v4.1, and gnomAD-Canada (>800,000 alleles screened).
SpliceAI in silico analysis predicts a potential splicing impact with a max delta score of 0.27 (DS_AL=0.27, DS_DL=0.26), exceeding the ATM VCEP 1.5.0 threshold of ≥0.2, consistent with the possible creation of an alternative splice acceptor or donor site.
The variant has not been reported in ClinVar and no functional studies (RNA splicing assays, ATM kinase activity, or radiosensitivity testing) have been published; thus no functional confirmation of the predicted splicing effect is available.
No A-T probands carrying this variant in trans with a pathogenic ATM variant have been reported, leaving the PM3 criterion unevaluable. Similarly, no cosegregation data (PP1) or case-control enrichment data (PS4) exist for this variant.
Applying the ATM VCEP 1.5.0 framework, two supporting-level pathogenic criteria are met: PM2_Supporting (absence from population databases) and PP3 (SpliceAI splicing prediction). No benign criteria are met. Under the ACMG/AMP 2015 combining rules adopted by the ATM VCEP, two supporting pathogenic criteria without any moderate, strong, or very strong criteria are insufficient to reach Likely Pathogenic. The variant is classified as a Variant of Uncertain Significance (VUS).
Resolution of this VUS would require: (1) RNA functional studies (RT-PCR or minigene assay) to confirm or exclude aberrant splicing, which could upgrade PVS1_Strength(RNA) or support BP7_RNA; (2) identification of the variant in trans with a pathogenic ATM variant in an A-T proband for PM3; and (3) reporting of this variant to ClinVar with clinical phenotype data.
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 |
|---|
Absent from gnomAD v4.1.
Absent from gnomAD v2.1.
Absent from gnomAD-Canada v1.0.
SpliceAI predicts possible splice impact for this variant (max delta score = 0.27).
0 paper records listed. No publication is explicitly linked to an applied criterion in the recorded metadata.
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.
Absent from gnomAD v4.1.
Absent from gnomAD v2.1.
Absent from gnomAD-Canada v1.0.
This variant is absent from ClinVar.
SpliceAI predicts possible splice impact for this variant (max delta score = 0.27).
This variant has not previously been reported in somatic cancers (COSMIC).