chr17-17793705-G-T

Position:

• chr17-17793705-G-T

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 0P and 8B. BP4_Strong BS2

The NM_030665.4(RAI1):​c.757G>T​(p.Ala253Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000411 in 1,460,732 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. 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. A253T) has been classified as Benign.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000041 (0 hom.)
• Consequence: RAI1 NM_030665.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.103

Genes affected

RAI1 (HGNC:9834): (retinoic acid induced 1) This gene is located within the Smith-Magenis syndrome region on chromosome 17. It is highly similar to its mouse counterpart and is expressed at high levels mainly in neuronal tissues. The protein encoded by this gene includes a polymorphic polyglutamine tract in the N-terminal domain. Expression of the mouse counterpart in neurons is induced by retinoic acid. This gene is associated with both the severity of the phenotype and the response to medication in schizophrenic patients. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Benign. Variant got -8 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.040891945).
• BS2: High AC in GnomAdExome4 at 6 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
RAI1	NM_030665.4	c.757G>T	p.Ala253Ser	missense_variant	3/6	ENST00000353383.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
RAI1	ENST00000353383.6	c.757G>T	p.Ala253Ser	missense_variant	3/6	1	NM_030665.4	P1
RAI1	ENST00000395774.1	c.757G>T	p.Ala253Ser	missense_variant	2/2	2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD3 exomes AF: 0.0000244 AC: 6 AN: 245976 Hom.: 0 AF XY: 0.0000223 AC XY: 3 AN XY: 134290

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.000145

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.000165

GnomAD4 exome AF: 0.00000411 AC: 6 AN: 1460732 Hom.: 0 Cov.: 96 AF XY: 0.00000275 AC XY: 2 AN XY: 726680

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.000134

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

ExAC AF: 0.0000413 AC: 5

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.073
BayesDel_addAF	Benign	-0.36	T
BayesDel_noAF	Benign	-0.53
CADD	Benign	1.3
DANN	Benign	0.74
DEOGEN2	Benign	0.055	T;.;.
Eigen	Benign	-1.2
Eigen_PC	Benign	-1.2
FATHMM_MKL	Benign	0.14	N
LIST_S2	Benign	0.68	T;T;T
M_CAP	Benign	0.060	D
MetaRNN	Benign	0.041	T;T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.23	N;.;.
MutationTaster	Benign	1.0	N;N
PrimateAI	Benign	0.45	T
PROVEAN	Benign	-0.050	N;N;.
REVEL	Benign	0.025
Sift	Benign	0.30	T;T;.
Sift4G	Benign	0.50	T;T;.
Polyphen		0.0010	B;.;.
Vest4		0.13
MutPred		0.14		Loss of sheet (P = 0.0228);Loss of sheet (P = 0.0228);.;
MVP		0.16
MPC		0.24
ClinPred		0.046	T
GERP RS		-0.19
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.6
Varity_R		0.043
gMVP		0.12

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: rs758931451; hg19: chr17-17697019;