NM_030948.6:c.1555C>G

Variant names:

• chr6-13283467-C-G
• NM_030948.6:c.1555C>G

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2 PP3

The NM_030948.6(PHACTR1):​c.1555C>G​(p.Leu519Val) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 31)
• Consequence: PHACTR1 NM_030948.6 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.00
• Publications: 0 publications found

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]

TBC1D7-LOC100130357 (HGNC:):

TBC1D7 (HGNC:21066): (TBC1 domain family member 7) This gene encodes a member of the TBC-domain containing protein family. The encoded protein functions as a subunit of the tuberous sclerosis TSC1-TSC2 complex which plays a role in the regulation of cellular growth and differentiation. Mutations in this gene have been associated with autosomal recessive megalencephaly. Alternative splicing results in multiple transcript variants. Naturally occurring readthrough transcription occurs between this locus and downstream LOC100130357. [provided by RefSeq, Jan 2016]

TBC1D7 Gene-Disease associations (from GenCC):

• macrocephaly/megalencephaly syndrome, autosomal recessive

  Inheritance: AR Classification: STRONG, MODERATE, LIMITED Submitted by: Ambry Genetics, Genomics England PanelApp, Labcorp Genetics (formerly Invitae)

ACMG classification

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.834

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_030948.6. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PHACTR1	NM_030948.6	MANE Select	c.1555C>G	p.Leu519Val	missense	Exon 13 of 15	NP_112210.1	Q9C0D0-1
	PHACTR1	NM_001322314.4		c.1765C>G	p.Leu589Val	missense	Exon 11 of 13	NP_001309243.1	A0A6Q8PGC2
	PHACTR1	NM_001322310.2		c.1762C>G	p.Leu588Val	missense	Exon 12 of 14	NP_001309239.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PHACTR1	ENST00000332995.12	TSL:2 MANE Select	c.1555C>G	p.Leu519Val	missense	Exon 13 of 15	ENSP00000329880.8	Q9C0D0-1
	PHACTR1	ENST00000675203.2		c.1765C>G	p.Leu589Val	missense	Exon 11 of 13	ENSP00000502172.2	A0A6Q8PGC2
	PHACTR1	ENST00000674595.1		c.1555C>G	p.Leu519Val	missense	Exon 12 of 13	ENSP00000502157.1	A0A6Q8PG87

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 31

ClinVar

ClinVar submissions as Germline

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	Developmental and epileptic encephalopathy, 70 (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.97
BayesDel_addAF	Pathogenic	0.17	D
BayesDel_noAF	Uncertain	0.010
CADD	Pathogenic	29
DANN	Uncertain	1.0
DEOGEN2	Benign	0.38	T
Eigen	Pathogenic	0.78
Eigen_PC	Pathogenic	0.76
FATHMM_MKL	Uncertain	0.93	D
M_CAP	Benign	0.029	D
MetaRNN	Pathogenic	0.83	D
MetaSVM	Benign	-0.55	T
MutationAssessor	Uncertain	2.2	M
PhyloP100		5.0
PrimateAI	Pathogenic	0.88	D
PROVEAN	Uncertain	-2.5	N
REVEL	Benign	0.28
Sift	Pathogenic	0.0	D
Sift4G	Pathogenic	0.0	D
Polyphen		1.0	D
Vest4		0.86
MutPred		0.77		Gain of MoRF binding (P = 0.0821)
MVP		0.46
ClinPred		0.95	D
GERP RS		5.8
Varity_R		0.81
gMVP		0.71
Mutation Taster		=11/89	disease causing

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

Other links and lift over

hg19: chr6-13283699;