chr7-117129846-C-G

Variant names:

• chr7-117129846-C-G
• rs1790596216
• NM_001369598.1:c.448C>G
• ST7 p.Arg150Gly

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2 PP3_Moderate

The NM_001369598.1(ST7):​c.448C>G​(p.Arg150Gly) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000687 in 1,456,614 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R150W) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: ST7 NM_001369598.1 missense, splice_region
• Scores: Splicing: ADA: 0.4596
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.934
• Publications: 0 publications found

Genes affected

ST7 (HGNC:11351): (suppression of tumorigenicity 7) The gene for this product maps to a region on chromosome 7 identified as an autism-susceptibility locus. Mutation screening of the entire coding region in autistic individuals failed to identify phenotype-specific variants, suggesting that coding mutations for this gene are unlikely to be involved in the etiology of autism. The function of this gene product has not been determined. Transcript variants encoding different isoforms of this protein have been described. [provided by RefSeq, Jul 2008]

ST7-AS2 (HGNC:16044): (ST7 antisense RNA 2)

ACMG classification

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.909

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001369598.1. 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
	ST7	NM_001369598.1	MANE Select	c.448C>G	p.Arg150Gly	missense splice_region	Exon 4 of 16	NP_001356527.1	H7BXS2
	ST7	NM_021908.3		c.448C>G	p.Arg150Gly	missense splice_region	Exon 4 of 16	NP_068708.1	X5DRA0
	ST7	NM_001369601.1		c.448C>G	p.Arg150Gly	missense splice_region	Exon 4 of 16	NP_001356530.1	E7EPD9

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ST7	ENST00000323984.8	TSL:5 MANE Select	c.448C>G	p.Arg150Gly	missense splice_region	Exon 4 of 16	ENSP00000325673.3	H7BXS2
	ST7	ENST00000265437.9	TSL:1	c.448C>G	p.Arg150Gly	missense splice_region	Exon 4 of 16	ENSP00000265437.5	Q9NRC1-1
	ST7	ENST00000393451.7	TSL:1	c.448C>G	p.Arg150Gly	missense splice_region	Exon 4 of 15	ENSP00000377097.3	Q9NRC1-2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.87e-7 AC: 1 AN: 1456614 Hom.: 0 Cov.: 30 AF XY: 0.00 AC XY: 0 AN XY: 724624

African (AFR) AF: 0.00 AC: 0 AN: 33122

American (AMR) AF: 0.00 AC: 0 AN: 43750

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25978

East Asian (EAS) AF: 0.00 AC: 0 AN: 39564

South Asian (SAS) AF: 0.00 AC: 0 AN: 85498

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53348

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5740

European-Non Finnish (NFE) AF: 9.01e-7 AC: 1 AN: 1109480

Other (OTH) AF: 0.00 AC: 0 AN: 60134

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.24	D
BayesDel_noAF	Uncertain	0.10
CADD	Pathogenic	27
DANN	Uncertain	1.0
DEOGEN2	Benign	0.17	T
Eigen	Uncertain	0.58
Eigen_PC	Uncertain	0.52
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Pathogenic	0.99	D
M_CAP	Uncertain	0.16	D
MetaRNN	Pathogenic	0.91	D
MetaSVM	Benign	-0.55	T
MutationAssessor	Pathogenic	3.0	M
PhyloP100		0.93
PrimateAI	Pathogenic	0.84	D
PROVEAN	Pathogenic	-5.9	D
REVEL	Uncertain	0.53
Sift	Uncertain	0.0010	D
Sift4G	Pathogenic	0.0010	D
Varity_R		0.85
gMVP		0.97
Mutation Taster		=4/96	disease causing

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.46
dbscSNV1_RF	Benign	0.47
SpliceAI score (max)		0.070		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

dbSNP: rs1790596216; hg19: chr7-116769900;