Genetic Variant GALR1:p.Val102Leu (chr18-77250852-G-C) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_001480.4(GALR1):c.304G>C(p.Val102Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000685 in 1,460,432 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V102M) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

GALR1
NM_001480.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 7.64

Publications

0 publications found

Variant links:

Genes affected

GALR1 (HGNC:4132): (galanin receptor 1) The neuropeptide galanin elicits a range of biological effects by interaction with specific G-protein-coupled receptors. Galanin receptors are seven-transmembrane proteins shown to activate a variety of intracellular second-messenger pathways. GALR1 inhibits adenylyl cyclase via a G protein of the Gi/Go family. GALR1 is widely expressed in the brain and spinal cord, as well as in peripheral sites such as the small intestine and heart. [provided by RefSeq, Jul 2008]

GALR1 links:

ENSG00000309801 (HGNC:):

ENSG00000309801 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
GALR1	NM_001480.4 link	c.304G>C	p.Val102Leu	missense_variant	Exon 1 of 3	ENST00000299727.5	NP_001471.2	P47211
GALR1	XM_017025691.2 link	c.304G>C	p.Val102Leu	missense_variant	Exon 1 of 3		XP_016881180.1
LOC124904329	XR_007066422.1 link	n.600C>G		non_coding_transcript_exon_variant	Exon 1 of 2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
GALR1	ENST00000299727.5 link	c.304G>C	p.Val102Leu	missense_variant	Exon 1 of 3	1	NM_001480.4	ENSP00000299727.3	P47211
ENSG00000309801	ENST00000844037.1 link	n.158C>G		non_coding_transcript_exon_variant	Exon 1 of 2
ENSG00000309801	ENST00000844038.1 link	n.67C>G		non_coding_transcript_exon_variant	Exon 1 of 2
ENSG00000309801	ENST00000844041.1 link	n.155C>G		non_coding_transcript_exon_variant	Exon 1 of 2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.85e-7

AC:

AN:

1460432

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

726618

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33476

American (AMR)

AF:

0.00

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52010

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1111978

Other (OTH)

AF:

0.00

AC:

AN:

60382

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.23

BayesDel_addAF

Benign

-0.059

BayesDel_noAF

Benign

-0.32

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.082

Eigen

Benign

-0.084

Eigen_PC

Benign

0.095

FATHMM_MKL

Uncertain

0.93

LIST_S2

Uncertain

0.86

M_CAP

Benign

0.011

MetaRNN

Uncertain

0.43

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.81

PhyloP100

7.6

PrimateAI

Uncertain

0.77

PROVEAN

Benign

-1.3

REVEL

Benign

0.13

Sift

Benign

0.34

Sift4G

Benign

0.33

Polyphen

0.051

Vest4

0.68

MutPred

0.60

Loss of catalytic residue at V102 (P = 0.0325);

MVP

0.57

MPC

0.46

ClinPred

0.91

GERP RS

4.3

Varity_R

0.33

gMVP

0.36

Mutation Taster

=65/35

polymorphism

(source)

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

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18-77250852-G-C

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over