About GNA11
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 Not recorded. 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.
Well-established in vitro and in vivo functional studies demonstrate that GNA11 Q209L is a gain-of-function activating mutation. Van Raamsdonk et al. (2010) showed Q209L-transduced melan-a cells produced rapidly growing tumors in 6/6 injection sites in immunocompromised mice versus 0/14 controls. Moore et al. (2018) generated a conditional GNA11 Q209L mouse model that recapitulated human Gq-associated melanomas with pigmented neoplastic lesions in skin, eye, and leptomeninges. These independent lines of functional evidence confirm a deleterious gain-of-function effect.
This variant is highly enriched in affected individuals compared to the general population. It is absent from gnomAD v2.1, v4.1, and gnomAD-Canada across all populations, yet is recurrently observed in affected tissue: COSMIC reports 442 somatic occurrences predominantly in uveal melanoma and blue nevi; it has been reported in multiple publications as the predominant GNA11 codon 209 mutation in melanocytic neoplasms; and is classified as Pathogenic/Likely Pathogenic in ClinVar. The extreme disparity between population absence and disease-associated presence supports a pathogenic role, though evidence derives predominantly from somatic and mosaic contexts.
This variant is absent from gnomAD v2.1, v4.1, and gnomAD-Canada v1.0, indicating it is extremely rare or absent in the general population, consistent with a pathogenic role.
GNA11 has a low rate of benign missense variation in population databases, and missense variants are the predominant pathogenic mechanism (gain-of-function at hotspot codons 183 and 209). The gene is constrained for missense variation, supporting PP2.
In silico prediction supports a deleterious effect: REVEL score is 0.833 (strongly damaging). SpliceAI predicts no splicing impact (max delta score 0.01). BayesDel score is 0.246, borderline below typical damaging threshold. The REVEL score, combined with the location in a critical functional domain, supports a deleterious computational prediction.
Two clinical laboratories have submitted this variant to ClinVar (variation ID 376002) with classifications of Pathogenic (SCV002525654, Seattle Children's Hospital) and Likely Pathogenic (SCV003804872, University Hospital Muenster). Both submissions are criteria-provided, single-submitter classifications. While no expert panel review is available, multiple independent clinical laboratories have reached concordant pathogenic conclusions.
No benign criterion marked as applied in the recorded assessment.
gene-specific framework lacked a usable explicit final combination framework, so generic ACMG/AMP 2015 final-combination rules were applied as fallback; applied criteria: PS3 strong, PS4 moderate, PM2 supporting, PP2 supporting, PP3 supporting, PP5 supporting; combination = 1 strong + 1 moderate + 4 supporting, which 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: 0.010. Refer to the recorded PP3/BP4 rationale for interpretation.
1 Pathogenic · 1 Likely pathogenic.
OncoKB identified variant-specific curated literature and context relevant to functional review; biological-effect context: Gain-of-function; curated oncogenicity label: Oncogenic.
This variant has previously been reported in somatic cancers (COSMIC; COSV50017277, n = 442 times).
This variant lies in a statistically significant hotspot.
ACMG/AMP criteria under Not recorded, with the data and sources behind each one.
26 criteria with recorded statuses: 6 met · 12 not met · 3 not assessed · 5 not applicable. Open any row for the full reasoning, the rule and the evidence behind it.
GNA11 c.626A>T (p.Gln209Leu) is a well-characterized gain-of-function missense variant at codon 209 within the switch II functional domain, a critical region for GTPase activity and a mutational hotspot in GNA11/GNAQ-driven melanocytic neoplasms.
Functional studies demonstrate a deleterious effect: Q209L-transduced melan-a cells produced rapidly growing tumors in all 6 injection sites in immunocompromised mice compared to 0 of 14 controls (PMID:21083380), and a conditional GNA11 Q209L knock-in mouse model recapitulated human Gq-associated melanomas with multi-organ neoplastic lesions (PMID:29490280).
The variant is absent from gnomAD v2.1, v4.1, and gnomAD-Canada across all populations, yet is recurrently observed in affected tissue: COSMIC reports 442 somatic occurrences, and it has been identified as the predominant codon 209 mutation in uveal melanoma, blue nevi, cutaneous melanoma, and phakomatosis pigmentovascularis.
Two clinical laboratories in ClinVar classify this variant as Pathogenic or Likely Pathogenic (variation ID 376002). In silico prediction with REVEL (score 0.833) supports a damaging effect. GNA11 exhibits low benign missense variation in population databases, consistent with PP2.
Applying generic ACMG/AMP 2015 combination rules: PS3 (strong), PM1 (moderate), PS4 (moderate), PM2 (supporting), PP2 (supporting), PP3 (supporting), PP5 (supporting) support a classification of Pathogenic.
No criteria match.
No further detail was recorded.
No further detail was recorded.
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No further detail was recorded.
Every interpreted variant in GNA11, mapped onto the exon structure of NM_002067.5. 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.
No further detail was recorded.
SpliceAI predicts no significant splice impact for this variant (max delta score = 0.01). REVEL score = 0.833. BayesDel score = 0.245583.
8 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.
Absent from gnomAD v4.1.
Absent from gnomAD v2.1.
Absent from gnomAD-Canada v1.0.
This variant has been reported in ClinVar as Pathogenic (1 clinical laboratory) and as Likely pathogenic (1 clinical laboratory). (ClinVarID = 376002)
SpliceAI predicts no significant splice impact for this variant (max delta score = 0.01). REVEL score = 0.833. BayesDel score = 0.245583.
OncoKB identified variant-specific curated literature and context relevant to functional review; biological-effect context: Gain-of-function; curated oncogenicity label: Oncogenic.
This variant lies in a statistically significant hotspot. This variant has previously been reported in somatic cancers (COSMIC; COSV50017277, n = 442 times).
This variant lies in a statistically significant hotspot.