6-39048872-C-A

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_002062.5(GLP1R):c.32C>A(p.Ala11Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000149 in 1,346,010 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 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)
  • Exomes 𝑓: 0.0000015 (0 hom.)
• Consequence: GLP1R NM_002062.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.318

Genes affected

GLP1R (HGNC:4324): (glucagon like peptide 1 receptor) This gene encodes a 7-transmembrane protein that functions as a receptor for glucagon-like peptide 1 (GLP-1) hormone, which stimulates glucose-induced insulin secretion. This receptor, which functions at the cell surface, becomes internalized in response to GLP-1 and GLP-1 analogs, and it plays an important role in the signaling cascades leading to insulin secretion. It also displays neuroprotective effects in animal models. Polymorphisms in this gene are associated with diabetes. The protein is an important drug target for the treatment of type 2 diabetes and stroke. Alternative splicing of this gene results in multiple transcript variants. [provided by RefSeq, Apr 2016]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.14734566).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
GLP1R	NM_002062.5	c.32C>A	p.Ala11Glu	missense_variant	1/13	ENST00000373256.5
GLP1R	NR_136562.2	n.92C>A		non_coding_transcript_exon_variant	1/14
GLP1R	NR_136563.2	n.92C>A		non_coding_transcript_exon_variant	1/14

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
GLP1R	ENST00000373256.5	c.32C>A	p.Ala11Glu	missense_variant	1/13	1	NM_002062.5	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000149 AC: 2 AN: 1346010 Hom.: 0 Cov.: 26 AF XY: 0.00000300 AC XY: 2 AN XY: 667228

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.0000330

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.0000179

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Sep 16, 2021

The c.32C>A (p.A11E) alteration is located in exon 1 (coding exon 1) of the GLP1R gene. This alteration results from a C to A substitution at nucleotide position 32, causing the alanine (A) at amino acid position 11 to be replaced by a glutamic acid (E). 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	Uncertain	0.37
BayesDel_addAF	Benign	-0.19	T
BayesDel_noAF	Benign	-0.51
Cadd	Benign	16
Dann	Benign	0.95
DEOGEN2	Benign	0.34	T
Eigen	Benign	-0.87
Eigen_PC	Benign	-0.89
FATHMM_MKL	Benign	0.025	N
LIST_S2	Benign	0.49	T
M_CAP	Uncertain	0.24	D
MetaRNN	Benign	0.15	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	1.1	L
MutationTaster	Benign	1.0	N
PrimateAI	Pathogenic	0.84	D
PROVEAN	Benign	-1.3	N
REVEL	Benign	0.033
Sift	Uncertain	0.026	D
Sift4G	Benign	0.28	T
Polyphen		0.036	B
Vest4		0.21
MutPred		0.58		Loss of MoRF binding (P = 0.0326);
MVP		0.75
MPC		0.54
ClinPred		0.082	T
GERP RS		0.52
Varity_R		0.25
gMVP		0.75

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

LitVar

Other links and lift over

dbSNP: rs1768022624; hg19: chr6-39016648;