NM_201525.4:c.1148C>A

Variant names:

• chr16-57656598-C-A
• rs1305914929
• NM_201525.4:c.1148C>A

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PM2 PP3_Strong

The NM_201525.4(ADGRG1):​c.1148C>A​(p.Thr383Asn) variant causes a missense change. 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 (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. T383I) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 32)
• Consequence: ADGRG1 NM_201525.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.57
• Publications: 0 publications found

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]

ADGRG1 Gene-Disease associations (from GenCC):

• bilateral frontoparietal polymicrogyria

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), ClinGen, G2P

ACMG classification

Our verdict: Likely_pathogenic. The variant received 6 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.98

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_201525.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ADGRG1	NM_201525.4	MANE Select	c.1148C>A	p.Thr383Asn	missense	Exon 9 of 14	NP_958933.1
	ADGRG1	NM_001145771.3		c.1148C>A	p.Thr383Asn	missense	Exon 10 of 15	NP_001139243.1
	ADGRG1	NM_001370428.1		c.1148C>A	p.Thr383Asn	missense	Exon 10 of 15	NP_001357357.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ADGRG1	ENST00000562631.7	TSL:1 MANE Select	c.1148C>A	p.Thr383Asn	missense	Exon 9 of 14	ENSP00000455351.2
	ADGRG1	ENST00000567835.5	TSL:1	c.1148C>A	p.Thr383Asn	missense	Exon 10 of 15	ENSP00000456794.1
	ADGRG1	ENST00000388813.9	TSL:1	c.1148C>A	p.Thr383Asn	missense	Exon 10 of 15	ENSP00000373465.5

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions as Germline

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	Bilateral frontoparietal polymicrogyria (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.75
BayesDel_addAF	Pathogenic	0.17	D
BayesDel_noAF	Uncertain	0.010
CADD	Pathogenic	28
DANN	Uncertain	0.99
DEOGEN2	Pathogenic	0.83	D
Eigen	Pathogenic	0.91
Eigen_PC	Pathogenic	0.84
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.88	D
M_CAP	Pathogenic	0.41	D
MetaRNN	Pathogenic	0.98	D
MetaSVM	Pathogenic	0.80	D
PhyloP100		5.6
PrimateAI	Uncertain	0.65	T
PROVEAN	Pathogenic	-4.6	D
REVEL	Pathogenic	0.83
Sift	Uncertain	0.0020	D
Sift4G	Pathogenic	0.0	D
Polyphen		1.0	D
Vest4		0.91
MutPred		0.88		Gain of loop (P = 0.3485)
MVP		0.98
ClinPred		1.0	D
GERP RS		5.6
Varity_R		0.89
gMVP		0.91

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

Other links and lift over

dbSNP: rs1305914929; hg19: chr16-57690510;