22-26433998-A-C

Position:

• chr22-26433998-A-C

Variant summary

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

The NM_020437.5(ASPHD2):​c.383A>C​(p.His128Pro) variant causes a missense change. The variant allele was found at a frequency of 0.0000131 in 152,242 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: 𝑓 0.000013 (0 hom., cov: 33)
• Consequence: ASPHD2 NM_020437.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 6.64

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/exons	MANE	Protein	UniProt
ASPHD2	NM_020437.5	c.383A>C	p.His128Pro	missense_variant	2/4	ENST00000215906.6	NP_065170.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ASPHD2	ENST00000215906.6	c.383A>C	p.His128Pro	missense_variant	2/4	1	NM_020437.5	ENSP00000215906	P1

Frequencies

GnomAD3 genomes AF: 0.0000131 AC: 2 AN: 152242 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.0000482

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD4 exome Cov.: 32

GnomAD4 genome AF: 0.0000131 AC: 2 AN: 152242 Hom.: 0 Cov.: 33 AF XY: 0.00 AC XY: 0 AN XY: 74374

Gnomad4 AFR AF: 0.0000482

Gnomad4 AMR AF: 0.00

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.00

Gnomad4 OTH AF: 0.00

Alfa AF: 0.0000329 Hom.: 0

Bravo AF: 0.0000378

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

Apr 14, 2023

The c.383A>C (p.H128P) alteration is located in exon 2 (coding exon 1) of the ASPHD2 gene. This alteration results from a A to C substitution at nucleotide position 383, causing the histidine (H) at amino acid position 128 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	Pathogenic	0.60
BayesDel_addAF	Pathogenic	0.21	D
BayesDel_noAF	Uncertain	0.070
CADD	Benign	23
DANN	Uncertain	0.99
DEOGEN2	Benign	0.034	T
Eigen	Uncertain	0.40
Eigen_PC	Uncertain	0.38
FATHMM_MKL	Uncertain	0.97	D
LIST_S2	Uncertain	0.86	D
M_CAP	Benign	0.014	T
MetaRNN	Uncertain	0.71	D
MetaSVM	Benign	-0.98	T
MutationAssessor	Benign	1.7	L
MutationTaster	Benign	1.0	D
PrimateAI	Uncertain	0.71	T
PROVEAN	Benign	-1.3	N
REVEL	Uncertain	0.33
Sift	Benign	0.27	T
Sift4G	Benign	0.20	T
Polyphen		0.99	D
Vest4		0.92
MVP		0.43
MPC		1.9
ClinPred		0.93	D
GERP RS		3.4
Varity_R		0.31
gMVP		0.94

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: rs1437612434; hg19: chr22-26829964;