X-145823246-G-C

Variant names:

• chrX-145823246-G-C
• rs1342354707
• NM_032539.5:c.821G>C

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 3P and 2B. PM2 PP2 BP4_Moderate

The NM_032539.5(SLITRK2):​c.821G>C​(p.Arg274Thr) variant causes a missense 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. 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. R274K) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 22)
• Consequence: SLITRK2 NM_032539.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 3.26
• Publications: 0 publications found

Genes affected

SLITRK2 (HGNC:13449): (SLIT and NTRK like family member 2) This gene encodes an integral membrane protein that contains two N-terminal leucine-rich repeats domains and contains C-terminal regions similar to neurotrophin receptors. The encoded protein may play a role in modulating neurite activity. Alternatively spliced transcript variants encoding the same protein have been described.[provided by RefSeq, Feb 2010]

SLITRK2 Gene-Disease associations (from GenCC):

• intellectual developmental disorder, X-linked 111

  Inheritance: XL Classification: STRONG, LIMITED Submitted by: PanelApp Australia, Ambry Genetics

ACMG classification

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 4 curated pathogenic missense variants (we use a threshold of 10). The gene has 0 curated benign missense variants. Gene score misZ: 2.1956 (below the threshold of 3.09). Trascript score misZ: NaN (below the threshold of 3.09). GenCC associations: The gene is linked to intellectual developmental disorder, X-linked 111.
• BP4: Computational evidence support a benign effect (MetaRNN=0.17304969).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_032539.5. 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
	SLITRK2	NM_032539.5	MANE Select	c.821G>C	p.Arg274Thr	missense	Exon 5 of 5	NP_115928.1	Q9H156-1
	SLITRK2	NM_001144003.3		c.821G>C	p.Arg274Thr	missense	Exon 5 of 5	NP_001137475.1	Q9H156-1
	SLITRK2	NM_001144004.3		c.821G>C	p.Arg274Thr	missense	Exon 5 of 5	NP_001137476.1	Q9H156-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SLITRK2	ENST00000335565.6	TSL:2 MANE Select	c.821G>C	p.Arg274Thr	missense	Exon 5 of 5	ENSP00000334374.5	Q9H156-1
	SLITRK2	ENST00000370490.1	TSL:6	c.821G>C	p.Arg274Thr	missense	Exon 1 of 1	ENSP00000359521.1	Q9H156-1
	SLITRK2	ENST00000867861.1		c.821G>C	p.Arg274Thr	missense	Exon 5 of 5	ENSP00000537920.1

Frequencies

GnomAD3 genomes Cov.: 22

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 22

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.13
BayesDel_addAF	Benign	-0.085	T
BayesDel_noAF	Benign	-0.36
CADD	Benign	20
DANN	Benign	0.82
DEOGEN2	Benign	0.011	T
FATHMM_MKL	Uncertain	0.91	D
LIST_S2	Benign	0.81	T
M_CAP	Pathogenic	0.41	D
MetaRNN	Benign	0.17	T
MetaSVM	Benign	-0.96	T
MutationAssessor	Benign	1.4	L
PhyloP100		3.3
PrimateAI	Benign	0.43	T
PROVEAN	Benign	-0.31	N
REVEL	Benign	0.11
Sift	Benign	0.43	T
Sift4G	Benign	0.44	T
Polyphen		0.087	B
Vest4		0.47
MutPred		0.34		Loss of MoRF binding (P = 0.0311)
MVP		0.84
MPC		0.99
ClinPred		0.52	D
GERP RS		4.6
Varity_R		0.21
gMVP		0.47
Mutation Taster		=91/9	polymorphism

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

dbSNP: rs1342354707; hg19: chrX-144904764;