chr16-57620135-A-G

Variant names:

• chr16-57620135-A-G
• rs1555528458
• ENST00000567835.5:c.-155A>G

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 3P and 2B. PM2 PP3 BP6_Moderate

The NM_005682.7(ADGRG1):​c.-155A>G variant causes a splice region 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. 3/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Likely benign (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: ADGRG1 NM_005682.7 splice_region
• Scores: Splicing: ADA: 0.9977
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 1.51

Genes affected

ADGRG1 (HGNC:4512): (adhesion G protein-coupled receptor G1) This gene encodes a member of the G protein-coupled receptor family and regulates brain cortical patterning. The encoded protein binds specifically to transglutaminase 2, a component of tissue and tumor stroma implicated as an inhibitor of tumor progression. Mutations in this gene are associated with a brain malformation known as bilateral frontoparietal polymicrogyria. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Feb 2014]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: Splicing scoreres supports a deletorius effect: Scorers claiming Pathogenic: dbscSNV1_ADA, dbscSNV1_RF, max_spliceai. No scorers claiming Uncertain. No scorers claiming Benign.
• BP6: Variant 16-57620135-A-G is Benign according to our data. Variant chr16-57620135-A-G is described in ClinVar as [Likely_benign]. Clinvar id is 511676.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ADGRG1	NM_001370431.1	c.-159A>G		splice_region_variant	Exon 1 of 15		NP_001357360.1
ADGRG1	NM_001370432.1	c.-37A>G		splice_region_variant	Exon 1 of 14		NP_001357361.1
ADGRG1	NM_005682.7	c.-155A>G		splice_region_variant	Exon 1 of 15		NP_005673.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ADGRG1	ENST00000567835.5	c.-155A>G		splice_region_variant	Exon 1 of 15	1		ENSP00000456794.1
ADGRG1	ENST00000568908.5	c.-155A>G		splice_region_variant	Exon 1 of 15	1		ENSP00000457456.1
ADGRG1	ENST00000567835	c.-155A>G		5_prime_UTR_variant	Exon 1 of 15	1		ENSP00000456794.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 162 Hom.: 0 Cov.: 0 AF XY: 0.00 AC XY: 0 AN XY: 108

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Benign:1

Aug 25, 2017

GeneDx

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.45
CADD	Benign	23
DANN	Benign	0.90

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Pathogenic	1.0
dbscSNV1_RF	Pathogenic	0.95
SpliceAI score (max)		0.51		Details are displayed if max score is > 0.2
DS_DG_spliceai		0.51		Position offset: -24

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

Publications

LitVar

Other links and lift over

dbSNP: rs1555528458; hg19: chr16-57654047;