8-39107795-T-C

Position:

• chr8-39107795-T-C

Variant summary

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

The NM_145004.7(ADAM32):​c.20T>C​(p.Leu7Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000715 in 1,398,078 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/17 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: 7.2e-7 (0 hom.)
• Consequence: ADAM32 NM_145004.7 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.31

Genes affected

ADAM32 (HGNC:15479): (ADAM metallopeptidase domain 32) This gene encodes a member of the disintegrin family of membrane-anchored proteins that play a role in diverse biological processes such as brain development, fertilization, tumor development and inflammation. This gene is predominantly expressed in the testis. The encoded protein undergoes proteolytic processing to generate a mature polypeptide comprised of an metalloprotease, disintegrin and epidermal growth factor-like domains. This gene is located in a cluster of other disintegrin and metallopeptidase family genes on chromosome 8. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Sep 2015]

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=0.16763031).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
ADAM32	NM_145004.7	c.20T>C	p.Leu7Pro	missense_variant	1/25	ENST00000379907.9	NP_659441.4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ADAM32	ENST00000379907.9	c.20T>C	p.Leu7Pro	missense_variant	1/25	1	NM_145004.7	ENSP00000369238	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 7.15e-7 AC: 1 AN: 1398078 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 689604

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: 0.00

Gnomad4 OTH exome AF: 0.0000172

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

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Dec 28, 2023

The c.20T>C (p.L7P) alteration is located in exon 1 (coding exon 1) of the ADAM32 gene. This alteration results from a T to C substitution at nucleotide position 20, causing the leucine (L) at amino acid position 7 to be replaced by a proline (P). 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	0.17
BayesDel_addAF	Benign	-0.16	T
BayesDel_noAF	Benign	-0.15
CADD	Benign	21
DANN	Uncertain	0.99
DEOGEN2	Benign	0.0048	T
Eigen	Benign	0.019
Eigen_PC	Benign	-0.22
FATHMM_MKL	Benign	0.52	D
LIST_S2	Benign	0.18	T
M_CAP	Benign	0.011	T
MetaRNN	Benign	0.17	T
MetaSVM	Benign	-1.0	T
MutationTaster	Benign	1.0	N;N;N
PROVEAN	Benign	0.46	N
REVEL	Benign	0.068
Sift	Benign	0.13	T
Sift4G	Benign	0.22	T
Polyphen		0.99	D
Vest4		0.26
MutPred		0.52		Gain of solvent accessibility (P = 0.026);
MVP		0.30
ClinPred		0.82	D
GERP RS		1.5

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: rs892274949; hg19: chr8-38965314;