chr9-128940623-G-C

Position:

• chr9-128940623-G-C

Variant summary

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

The NM_001100876.2(PHYHD1):​c.611G>C​(p.Arg204Pro) variant causes a missense change. The variant allele was found at a frequency of 0.00000657 in 152,184 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: 𝑓 0.0000066 (0 hom., cov: 32)
• Consequence: PHYHD1 NM_001100876.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.45

Genes affected

PHYHD1 (HGNC:23396): (phytanoyl-CoA dioxygenase domain containing 1) Enables 2-oxoglutarate-dependent dioxygenase activity. [provided by Alliance of Genome Resources, Apr 2022]

PHYHD1 (HGNC:):

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=0.4080754).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
PHYHD1	NM_001100876.2	c.611G>C	p.Arg204Pro	missense_variant	11/13	ENST00000372592.8	NP_001094346.1
PHYHD1	NM_174933.4	c.589G>C	p.Gly197Arg	missense_variant	10/12		NP_777593.2
PHYHD1	NM_001100877.1	c.548G>C	p.Arg183Pro	missense_variant	8/10		NP_001094347.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PHYHD1	ENST00000372592.8	c.611G>C	p.Arg204Pro	missense_variant	11/13	2	NM_001100876.2	ENSP00000361673.3

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152184 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0000655

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: 0.00000657 AC: 1 AN: 152184 Hom.: 0 Cov.: 32 AF XY: 0.0000135 AC XY: 1 AN XY: 74346

Gnomad4 AFR AF: 0.00

Gnomad4 AMR AF: 0.0000655

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

Asia WGS AF: 0.000289 AC: 1 AN: 3478

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 27, 2023

The c.589G>C (p.G197R) alteration is located in exon 10 (coding exon 8) of the PHYHD1 gene. This alteration results from a G to C substitution at nucleotide position 589, causing the glycine (G) at amino acid position 197 to be replaced by an arginine (R). 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	0.82
BayesDel_addAF	Pathogenic	0.19	D
BayesDel_noAF	Pathogenic	0.22
CADD	Pathogenic	27
DANN	Uncertain	1.0
Eigen	Uncertain	0.58
Eigen_PC	Uncertain	0.54
FATHMM_MKL	Pathogenic	0.97	D
LIST_S2	Benign	0.50	T
M_CAP	Uncertain	0.15	D
MetaRNN	Benign	0.41	T
MetaSVM	Uncertain	0.76	D
PROVEAN	Benign	0.29	N
REVEL	Benign	0.22
Sift	Uncertain	0.0010	D
Sift4G	Uncertain	0.053	T
Polyphen		0.96	D
Vest4		0.43
MutPred		0.50		Loss of glycosylation at S196 (P = 0.064);
MVP		0.19
MPC		0.19
ClinPred		0.99	D
GERP RS		3.8
gMVP		0.39

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: rs915843519; hg19: chr9-131702902;