17-17797460-G-A

Variant names:

• chr17-17797460-G-A
• NM_030665.4:c.4512G>A
• RAI1 p.Leu1504Leu

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 2P and 6B. PM2 BP4_Strong BP6 BP7

The NM_030665.4(RAI1):​c.4512G>A​(p.Leu1504Leu) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (no stars). Synonymous variant affecting the same amino acid position (i.e. L1504L) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 33)
• Consequence: RAI1 NM_030665.4 synonymous
• Clinical Significance: Likely benign no assertion criteria provided B:1
• Conservation: PhyloP100: 1.43
• Publications: 0 publications found

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]

RAI1 Gene-Disease associations (from GenCC):

• Smith-Magenis syndrome

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), G2P, ClinGen, Orphanet
• Potocki-Lupski syndrome

  Inheritance: AD Classification: MODERATE Submitted by: Ambry Genetics

ACMG classification

Our verdict: Likely_benign. The variant received -4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.5).
• BP6: Variant 17-17797460-G-A is Benign according to our data. Variant chr17-17797460-G-A is described in ClinVar as Likely_benign. ClinVar VariationId is 3351024.Status of the report is no_assertion_criteria_provided, 0 stars.
• BP7: Synonymous conserved (PhyloP=1.43 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_030665.4. 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
	RAI1	NM_030665.4	MANE Select	c.4512G>A	p.Leu1504Leu	synonymous	Exon 3 of 6	NP_109590.3

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	RAI1	ENST00000353383.6	TSL:1 MANE Select	c.4512G>A	p.Leu1504Leu	synonymous	Exon 3 of 6	ENSP00000323074.4	Q7Z5J4-1
	RAI1	ENST00000918590.1		c.4512G>A	p.Leu1504Leu	synonymous	Exon 2 of 5	ENSP00000588649.1
	RAI1	ENST00000955422.1		c.4512G>A	p.Leu1504Leu	synonymous	Exon 3 of 6	ENSP00000625481.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 37

GnomAD4 genome Cov.: 33

ClinVar

ClinVar submissions

Significance: Likely benign

Revision: no assertion criteria provided

Pathogenic	VUS	Benign	Condition
-	-	1	RAI1-related disorder (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.50
CADD	Benign	9.3
DANN	Benign	0.77
PhyloP100		1.4

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

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

Other links and lift over

hg19: chr17-17700774;