22-26434406-A-G

Variant names:

• chr22-26434406-A-G
• NM_020437.5:c.791A>G

Variant summary

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

The NM_020437.5(ASPHD2):​c.791A>G​(p.Asn264Ser) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,868 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: ASPHD2 NM_020437.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 8.51

Genes affected

ASPHD2 (HGNC:30437): (aspartate beta-hydroxylase domain containing 2) Predicted to enable dioxygenase activity and metal ion binding activity. Predicted to be involved in peptidyl-amino acid modification. Located in membrane. [provided by Alliance of Genome Resources, Apr 2022]

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
ASPHD2	NM_020437.5	c.791A>G	p.Asn264Ser	missense_variant	Exon 2 of 4	ENST00000215906.6	NP_065170.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ASPHD2	ENST00000215906.6	c.791A>G	p.Asn264Ser	missense_variant	Exon 2 of 4	1	NM_020437.5	ENSP00000215906.5

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461868 Hom.: 0 Cov.: 34 AF XY: 0.00000138 AC XY: 1 AN XY: 727230

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: 0.0000232

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

Oct 05, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.791A>G (p.N264S) alteration is located in exon 2 (coding exon 1) of the ASPHD2 gene. This alteration results from a A to G substitution at nucleotide position 791, causing the asparagine (N) at amino acid position 264 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	Uncertain	0.39
BayesDel_addAF	Benign	-0.13	T
BayesDel_noAF	Benign	-0.42
CADD	Uncertain	24
DANN	Uncertain	1.0
DEOGEN2	Benign	0.020	T
Eigen	Uncertain	0.55
Eigen_PC	Uncertain	0.56
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.92	D
M_CAP	Benign	0.012	T
MetaRNN	Uncertain	0.69	D
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	1.5	L
PrimateAI	Uncertain	0.75	T
PROVEAN	Benign	-1.2	N
REVEL	Benign	0.23
Sift	Benign	0.12	T
Sift4G	Benign	0.21	T
Polyphen		1.0	D
Vest4		0.72
MutPred		0.59		Gain of sheet (P = 0.1451);
MVP		0.27
MPC		1.3
ClinPred		0.90	D
GERP RS		4.8
Varity_R		0.16
gMVP		0.82

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr22-26830372;