chr17-76075211-C-A

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_003857.4(GALR2):​c.328C>A​(p.His110Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 14/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Consequence

GALR2
NM_003857.4 missense

Scores

6
13

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.16
Variant links:
Genes affected
GALR2 (HGNC:4133): (galanin receptor 2) Galanin is an important neuromodulator present in the brain, gastrointestinal system, and hypothalamopituitary axis. It is a 30-amino acid non-C-terminally amidated peptide that potently stimulates growth hormone secretion, inhibits cardiac vagal slowing of heart rate, abolishes sinus arrhythmia, and inhibits postprandial gastrointestinal motility. The actions of galanin are mediated through interaction with specific membrane receptors that are members of the 7-transmembrane family of G protein-coupled receptors. GALR2 interacts with the N-terminal residues of the galanin peptide. The primary signaling mechanism for GALR2 is through the phospholipase C/protein kinase C pathway (via Gq), in contrast to GALR1, which communicates its intracellular signal by inhibition of adenylyl cyclase through Gi. However, it has been demonstrated that GALR2 couples efficiently to both the Gq and Gi proteins to simultaneously activate 2 independent signal transduction pathways. [provided by RefSeq, Jul 2008]
ZACN (HGNC:29504): (zinc activated ion channel) LGICZ1 is a zinc-activated ligand-gated ion channel that defines a new subgroup of the cysteine-loop superfamily of ligand-gated ion channels (Davies et al., 2003 [PubMed 12381728]).[supplied by OMIM, Mar 2008]

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.3331188).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
GALR2NM_003857.4 linkc.328C>A p.His110Asn missense_variant Exon 1 of 2 ENST00000329003.4 NP_003848.1 O43603
GALR2XM_011525427.4 linkc.157C>A p.His53Asn missense_variant Exon 3 of 4 XP_011523729.1
GALR2XM_047436984.1 linkc.157C>A p.His53Asn missense_variant Exon 3 of 4 XP_047292940.1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
GALR2ENST00000329003.4 linkc.328C>A p.His110Asn missense_variant Exon 1 of 2 1 NM_003857.4 ENSP00000329684.3 O43603
ZACNENST00000591500.1 linkn.216+3035C>A intron_variant Intron 1 of 1 4

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD4 exome
Cov.:
32
GnomAD4 genome
Cov.:
32

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

not specified Uncertain:1
Dec 02, 2021
Ambry Genetics
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

The c.328C>A (p.H110N) alteration is located in exon 1 (coding exon 1) of the GALR2 gene. This alteration results from a C to A substitution at nucleotide position 328, causing the histidine (H) at amino acid position 110 to be replaced by an asparagine (N). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.25
BayesDel_addAF
Benign
-0.10
T
BayesDel_noAF
Benign
-0.38
CADD
Benign
22
DANN
Uncertain
0.98
DEOGEN2
Benign
0.13
T
Eigen
Benign
-0.24
Eigen_PC
Benign
-0.16
FATHMM_MKL
Uncertain
0.89
D
LIST_S2
Uncertain
0.87
D
M_CAP
Benign
0.017
T
MetaRNN
Benign
0.33
T
MetaSVM
Benign
-0.86
T
MutationAssessor
Benign
0.72
N
PrimateAI
Uncertain
0.58
T
PROVEAN
Benign
-2.1
N
REVEL
Benign
0.16
Sift
Uncertain
0.025
D
Sift4G
Uncertain
0.0080
D
Polyphen
0.26
B
Vest4
0.43
MutPred
0.61
Loss of glycosylation at S112 (P = 0.316);
MVP
0.82
ClinPred
0.46
T
GERP RS
0.46
Varity_R
0.13
gMVP
0.77

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.0
Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr17-74071292; API