6-13053521-C-G

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2 PP2

The NM_030948.6(PHACTR1):c.407C>G(p.Thr136Arg) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. T136M) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 33)
• Consequence: PHACTR1 NM_030948.6 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 6.11

Genes affected

PHACTR1 (HGNC:20990): (phosphatase and actin regulator 1) The protein encoded by this gene is a member of the phosphatase and actin regulator family of proteins. This family member can bind actin and regulate the reorganization of the actin cytoskeleton. It plays a role in tubule formation and in endothelial cell survival. Polymorphisms in this gene are associated with susceptibility to myocardial infarction, coronary artery disease and cervical artery dissection. Alternative splicing of this gene results in multiple transcript variants. [provided by RefSeq, Apr 2016]

ACMG classification

Verdict is Uncertain_significance. Variant got 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant where missense usually causes diseases, PHACTR1

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PHACTR1	NM_030948.6	c.407C>G	p.Thr136Arg	missense_variant	5/15	ENST00000332995.12

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PHACTR1	ENST00000332995.12	c.407C>G	p.Thr136Arg	missense_variant	5/15	2	NM_030948.6	P3

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 30

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 24, 2023

The c.407C>G (p.T136R) alteration is located in exon 5 (coding exon 3) of the PHACTR1 gene. This alteration results from a C to G substitution at nucleotide position 407, causing the threonine (T) at amino acid position 136 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	0.95
BayesDel_addAF	Pathogenic	0.21	D
BayesDel_noAF	Uncertain	0.060
Cadd	Pathogenic	31
Dann	Uncertain	0.99
DEOGEN2	Benign	0.40	T;.;.
Eigen	Pathogenic	0.69
Eigen_PC	Pathogenic	0.69
FATHMM_MKL	Uncertain	0.96	D
M_CAP	Benign	0.057	D
MetaRNN	Uncertain	0.47	T;T;T
MetaSVM	Benign	-0.90	T
MutationAssessor	Benign	1.4	L;L;.
MutationTaster	Benign	0.78	D;D;D
PrimateAI	Uncertain	0.77	T
PROVEAN	Pathogenic	-4.7	D;D;D
REVEL	Benign	0.26
Sift	Pathogenic	0.0	D;D;D
Sift4G	Uncertain	0.0040	D;D;D
Polyphen		1.0	D;D;.
Vest4		0.86
MutPred		0.27		Gain of solvent accessibility (P = 0.0171);Gain of solvent accessibility (P = 0.0171);.;
MVP		0.60
ClinPred		1.0	D
GERP RS		5.6
Varity_R		0.47
gMVP		0.87

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.36		Details are displayed if max score is > 0.2
DS_DG_spliceai		0.36		Position offset: 0

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: chr6-13053753;