chr15-34038935-C-T

Position:

• chr15-34038935-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_020371.3(AVEN):​c.112G>A​(p.Gly38Ser) variant causes a missense 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. 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: 33)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: AVEN NM_020371.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.473

Genes affected

AVEN (HGNC:13509): (apoptosis and caspase activation inhibitor) Involved in negative regulation of apoptotic process. Located in membrane. [provided by Alliance of Genome Resources, Apr 2022]

CHRM5 (HGNC:1954): (cholinergic receptor muscarinic 5) The muscarinic cholinergic receptors belong to a larger family of G protein-coupled receptors. The functional diversity of these receptors is defined by the binding of acetylcholine and includes cellular responses such as adenylate cyclase inhibition, phosphoinositide degeneration, and potassium channel mediation. Muscarinic receptors influence many effects of acetylcholine in the central and peripheral nervous system. The clinical implications of this receptor are unknown; however, stimulation of this receptor is known to increase cyclic AMP levels. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.3264565).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
AVEN	NM_020371.3	c.112G>A	p.Gly38Ser	missense_variant	1/6	ENST00000306730.8
CHRM5	NM_012125.4	c.-407-7605C>T		intron_variant		ENST00000383263.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
AVEN	ENST00000306730.8	c.112G>A	p.Gly38Ser	missense_variant	1/6	1	NM_020371.3	P1
CHRM5	ENST00000383263.7	c.-407-7605C>T		intron_variant		2	NM_012125.4	P1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 957090 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 453646

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: 0.00

GnomAD4 genome Cov.: 33

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

May 13, 2024

The c.112G>A (p.G38S) alteration is located in exon 1 (coding exon 1) of the AVEN gene. This alteration results from a G to A substitution at nucleotide position 112, causing the glycine (G) at amino acid position 38 to be replaced by a serine (S). 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	0.28
BayesDel_addAF	Benign	-0.011	T
BayesDel_noAF	Benign	-0.25
CADD	Benign	19
DANN	Uncertain	0.98
DEOGEN2	Benign	0.015	T
Eigen	Benign	-0.056
Eigen_PC	Benign	-0.19
FATHMM_MKL	Benign	0.21	N
LIST_S2	Benign	0.33	T
M_CAP	Pathogenic	0.67	D
MetaRNN	Benign	0.33	T
MetaSVM	Benign	-0.84	T
MutationAssessor	Benign	1.6	L
MutationTaster	Benign	0.96	D;D;D
PrimateAI	Pathogenic	0.91	D
PROVEAN	Benign	-0.34	N
REVEL	Benign	0.11
Sift	Pathogenic	0.0	D
Sift4G	Uncertain	0.033	D
Polyphen		1.0	D
Vest4		0.24
MutPred		0.29		Gain of glycosylation at G38 (P = 0.002);
MVP		0.50
MPC		0.0012
ClinPred		0.82	D
GERP RS		1.2
Varity_R		0.14
gMVP		0.12

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: rs1371673266; hg19: chr15-34331136;