About HRAS
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 pathogenic. Select a step to read what it means.
Pathogenic.A pathogenic classification under the recorded framework.
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 HRAS VCEP v2.3.0. 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.
The p.Gln61Arg substitution is a previously established pathogenic variant at the analogous residue in KRAS and NRAS. Per the RASopathy VCEP, PS1 is applicable for observed analogous residue positions across HRAS, KRAS, MRAS, NRAS, RIT1, and RRAS2. Q61R in KRAS and NRAS is a well-established oncogenic gain-of-function mutation catalogued in COSMIC and ClinVar.
The variant substitutes Gln61Arg within the Switch II (SW2) domain (HRAS amino acids 57-64), a critical and well-established functional domain defined by the RASopathy VCEP. SW2 is essential for GTP hydrolysis and GAP interaction. Residue Q61 is a known cancer hotspot (cancerhotspots.org) and is recurrently mutated in somatic cancers (COSMIC n=417). No benign variation is observed at this residue.
The variant is absent from gnomAD v2.1 (exomes), gnomAD v4.1 (exomes), and gnomAD-Canada v1.0 (genomes), meeting the VCEP requirement for absence from population controls.
At least one other pathogenic missense change has been established at codon 61 of HRAS. The RASopathy VCEP recognizes Q61L (c.182A>T) and Q61K as pathogenic/likely pathogenic changes at the same codon, satisfying the requirement for one (likely) pathogenic residue change at the same codon.
REVEL score of 0.811 meets the VCEP threshold of ≥0.7 for pathogenic computational evidence. SpliceAI predicts no splice impact (max delta score = 0.00), consistent with a missense effect rather than a splicing defect. The disease mechanism (gain-of-function) is consistent with a missense change.
No benign criterion marked as applied in the recorded assessment.
ClinGen RASopathy Expert Panel Specifications to the ACMG/AMP Variant Interpretation Guidelines for HRAS Version 2.3.0 v2.3.0 criteria-combination framework: matched Rule7 (1 Pathogenic.Strong + 2 Pathogenic.Moderate + Pathogenic.Supporting >=2) with applied criteria: PS1 strong, PM1 moderate, PM2 supporting, PM5 moderate, PP3 supporting; maps to Pathogenic.
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: 0.000. Refer to the recorded PP3/BP4 rationale for interpretation.
3 Likely pathogenic · 1 Pathogenic. ClinVar API review status: criteria provided, multiple submitters, no conflicts.
OncoKB identified variant-specific curated literature and context relevant to functional review; biological-effect context: Likely Gain-of-function; curated oncogenicity label: Likely Oncogenic.
This variant has previously been reported in somatic cancers (COSMIC; COSV54236691, n = 417 times).
This variant lies in a statistically significant hotspot.
ACMG/AMP criteria under ClinGen HRAS VCEP v2.3.0, with the data and sources behind each one.
29 criteria with recorded statuses: 5 met · 11 not met · 1 not assessed · 12 not applicable. Open any row for the full reasoning, the rule and the evidence behind it.
The c.182A>G (p.Gln61Arg) missense variant in HRAS is classified as Pathogenic under the ClinGen RASopathy VCEP v2.3.0 framework.
PS1 (Strong): p.Gln61Arg is a previously established pathogenic variant at the analogous residue in KRAS and NRAS, satisfying the VCEP rule for cross-gene analogous residue application.
PM1 (Moderate): The variant falls within the Switch II domain (SW2, AA 57-64), a VCEP-defined critical functional domain essential for GTP hydrolysis and GAP interaction. Residue Q61 is a statistically significant cancer hotspot (cancerhotspots.org) with 417 somatic occurrences in COSMIC.
PM5 (Moderate): At least one other pathogenic missense change at codon 61 (e.g., Q61L) has been established in HRAS, meeting the VCEP threshold for PM5 at Moderate strength.
PM2 (Supporting): The variant is absent from gnomAD v2.1, v4.1, and gnomAD-Canada population databases, meeting the VCEP requirement for absence from controls.
PP3 (Supporting): The REVEL score of 0.811 exceeds the VCEP threshold of >=0.7 for pathogenic computational prediction. SpliceAI predicts no splice impact (max delta = 0.00).
Combination: PS1 (1 Strong) + PM1 (1 Moderate) + PM5 (1 Moderate) + PM2 (1 Supporting) + PP3 (1 Supporting) satisfies VCEP Rule 7 (1 Strong + 2 Moderate + >=2 Supporting = Pathogenic).
No criteria match.
No further detail was recorded.
No further detail was recorded.
Every interpreted variant in HRAS, mapped onto the exon structure of NM_005343.4. 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 no significant splice impact for this variant (max delta score = 0.00). REVEL score = 0.811. BayesDel score = 0.248544.
10 paper records listed. 1 cited in the classification. None of the listed paper records explicitly indicates that the variant is named.
Glutamine-61 is essential for GTP hydrolysis: Its mutation to any other amino acid (except Glu) blocks Ras-mediated GTP hydrolysis by GAP.
Location Abstract; Fig. 4C caption (Gln61 structural role); Results, switch II discussion
Context X-ray crystallography of H-Ras-GDP-AlF3-GAP-334 ternary complex
cells expressing RAC1 Q61R, a mutation we identified in a primary prostate cancer that is paralogous to KRAS Q61, also potently induced RAC1 activation
Results, 'Lineage diversity and mutant allele-specificity'; Fig 3a; Fig 4d-f
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 has been reported in ClinVar as Likely pathogenic (3 clinical laboratories) and as Pathogenic (1 clinical laboratory). (ClinVarID = 160364)
SpliceAI predicts no significant splice impact for this variant (max delta score = 0.00). REVEL score = 0.811. BayesDel score = 0.248544.
OncoKB identified variant-specific curated literature and context relevant to functional review; biological-effect context: Likely Gain-of-function; curated oncogenicity label: Likely Oncogenic.
This variant lies in a statistically significant hotspot. This variant has previously been reported in somatic cancers (COSMIC; COSV54236691, n = 417 times).
This variant lies in a statistically significant hotspot.