8-24490869-A-G

Variant names:

• chr8-24490869-A-G
• rs1820321801
• NM_003817.4:c.1337A>G

Variant summary

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

The NM_003817.4(ADAM7):​c.1337A>G​(p.Glu446Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,540 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: ADAM7 NM_003817.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.05

Genes affected

ADAM7 (HGNC:214): (ADAM metallopeptidase domain 7) This gene encodes a member of the ADAMs family of zinc proteases. These transmembrane proteins play roles in multiple processes including cell signaling, adhesion and migration. The encoded protein lacks protease activity and may play roles in protein-protein interactions and cell adhesion processes including sperm-egg fusion. Mutations in this gene may be involved in the progression of melanoma. [provided by RefSeq, Oct 2011]

ADAM7-AS2 (HGNC:56153): (ADAM7 antisense RNA 2)

ADAM7-AS1 (HGNC:56152): (ADAM7, ADAMDEC1 and ADAM28 antisense RNA 1)

ACMG classification

Verdict is Uncertain_significance. Variant got 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
ADAM7	NM_003817.4	c.1337A>G	p.Glu446Gly	missense_variant	Exon 13 of 22	ENST00000175238.10	NP_003808.2
ADAM7-AS1	NR_125808.1	n.79+57671T>C		intron_variant	Intron 1 of 5
ADAM7-AS2	NR_125809.1	n.748-363T>C		intron_variant	Intron 4 of 4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ADAM7	ENST00000175238.10	c.1337A>G	p.Glu446Gly	missense_variant	Exon 13 of 22	1	NM_003817.4	ENSP00000175238.5

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461540 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 727056

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 8.99e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

Bravo AF: 0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Aug 10, 2021

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1337A>G (p.E446G) alteration is located in exon 13 (coding exon 13) of the ADAM7 gene. This alteration results from a A to G substitution at nucleotide position 1337, causing the glutamic acid (E) at amino acid position 446 to be replaced by a glycine (G). 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	0.13
BayesDel_addAF	Benign	-0.13	T
BayesDel_noAF	Benign	-0.42
CADD	Uncertain	25
DANN	Uncertain	1.0
DEOGEN2	Benign	0.028	T;T;.
Eigen	Uncertain	0.47
Eigen_PC	Uncertain	0.40
FATHMM_MKL	Uncertain	0.80	D
LIST_S2	Benign	0.66	T;T;T
M_CAP	Benign	0.011	T
MetaRNN	Uncertain	0.59	D;D;D
MetaSVM	Benign	-1.1	T
MutationAssessor	Uncertain	2.0	M;.;.
PrimateAI	Benign	0.33	T
PROVEAN	Pathogenic	-5.5	D;D;D
REVEL	Benign	0.20
Sift	Uncertain	0.0010	D;D;D
Sift4G	Uncertain	0.040	D;D;T
Polyphen		1.0	D;.;D
Vest4		0.34
MutPred		0.50		Loss of glycosylation at T441 (P = 0.1656);Loss of glycosylation at T441 (P = 0.1656);.;
MVP		0.33
MPC		0.10
ClinPred		0.99	D
GERP RS		3.2
Varity_R		0.51
gMVP		0.45

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: rs1820321801; hg19: chr8-24348382;