chrX-14607212-A-C
Position:
Variant summary
Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM2PP3_Strong
The NM_002063.4(GLRA2):c.659A>C(p.Gln220Pro) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).
Frequency
Genomes: not found (cov: 22)
Consequence
GLRA2
NM_002063.4 missense
NM_002063.4 missense
Scores
12
4
1
Clinical Significance
Conservation
PhyloP100: 9.23
Genes affected
GLRA2 (HGNC:4327): (glycine receptor alpha 2) The glycine receptor consists of two subunits, alpha and beta, and acts as a pentamer. The protein encoded by this gene is an alpha subunit and can bind strychnine. Several transcript variants encoding different isoforms have been found for this gene.[provided by RefSeq, Jan 2010]
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ACMG classification
Classification made for transcript
Verdict is Likely_pathogenic. Variant got 6 ACMG points.
PM2
Very rare variant in population databases, with high coverage;
PP3
MetaRNN computational evidence supports a deleterious effect, 0.958
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
GLRA2 | NM_002063.4 | c.659A>C | p.Gln220Pro | missense_variant | 6/9 | ENST00000218075.9 | NP_002054.1 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Protein | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|---|
GLRA2 | ENST00000218075.9 | c.659A>C | p.Gln220Pro | missense_variant | 6/9 | 1 | NM_002063.4 | ENSP00000218075 | A1 | |
GLRA2 | ENST00000355020.9 | c.659A>C | p.Gln220Pro | missense_variant | 6/9 | 1 | ENSP00000347123 | P4 | ||
GLRA2 | ENST00000415367.2 | n.910A>C | non_coding_transcript_exon_variant | 6/9 | 3 | |||||
GLRA2 | ENST00000443437.6 | c.*586A>C | 3_prime_UTR_variant, NMD_transcript_variant | 8/11 | 2 | ENSP00000387756 |
Frequencies
GnomAD3 genomes Cov.: 22
GnomAD3 genomes
Cov.:
22
GnomAD4 exome Cov.: 26
GnomAD4 exome
Cov.:
26
GnomAD4 genome Cov.: 22
GnomAD4 genome
Cov.:
22
ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
Intellectual developmental disorder, X-linked, syndromic, Pilorge type Uncertain:1
Uncertain significance, criteria provided, single submitter | curation | Broad Center for Mendelian Genomics, Broad Institute of MIT and Harvard | Dec 20, 2023 | The p.Gln220Pro variant in GLRA2 was identified by our study in 1 individual with Pilorge type X-linked syndromic intellectual development disorder. Trio exome analysis showed this variant to be de novo. This variant was absent from large population studies. Computational prediction tools and conservation analyses suggest that this variant may impact the protein, though this information is not predictive enough to determine pathogenicity. In summary, while there is some suspicion for a pathogenic role, the clinical significance of this variant is uncertain. ACMG/AMP Criteria applied: PP3, PM2_supporting, PS2_supporting (Richards 2015). - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
BayesDel_addAF
Pathogenic
D
BayesDel_noAF
Pathogenic
CADD
Pathogenic
DANN
Uncertain
DEOGEN2
Pathogenic
.;D;.;.
FATHMM_MKL
Pathogenic
D
LIST_S2
Pathogenic
D;D;D;D
M_CAP
Pathogenic
D
MetaRNN
Pathogenic
D;D;D;D
MetaSVM
Uncertain
D
MutationAssessor
Pathogenic
.;H;H;.
MutationTaster
Benign
D;D;D
PrimateAI
Uncertain
T
PROVEAN
Pathogenic
D;D;D;D
REVEL
Pathogenic
Sift
Pathogenic
D;D;D;D
Sift4G
Uncertain
D;D;D;D
Polyphen
0.97, 1.0
.;D;D;.
Vest4
MutPred
0.80
.;Gain of glycosylation at Q220 (P = 0.0758);Gain of glycosylation at Q220 (P = 0.0758);.;
MVP
MPC
2.6
ClinPred
D
GERP RS
Varity_R
gMVP
Splicing
Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at
Publications
No publications associated with this variant yet.