rs267606926

Positions:

• chr5-69509746-T-C

Variant summary

Our verdict is Uncertain significance. Variant got 5 ACMG points: 5P and 0B. PM2 PP3_Moderate PP5

The NM_001205254.2(OCLN):​c.656T>C​(p.Phe219Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000274 in 1,461,852 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (no stars).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000027 (0 hom.)
• Consequence: OCLN NM_001205254.2 missense
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 1.58

Genes affected

OCLN (HGNC:8104): (occludin) This gene encodes an integral membrane protein that is required for cytokine-induced regulation of the tight junction paracellular permeability barrier. Mutations in this gene are thought to be a cause of band-like calcification with simplified gyration and polymicrogyria (BLC-PMG), an autosomal recessive neurologic disorder that is also known as pseudo-TORCH syndrome. Alternative splicing results in multiple transcript variants. A related pseudogene is present 1.5 Mb downstream on the q arm of chromosome 5. [provided by RefSeq, Apr 2011]

ACMG classification

Verdict is Uncertain_significance. Variant got 5 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.865
• PP5: Variant 5-69509746-T-C is Pathogenic according to our data. Variant chr5-69509746-T-C is described in ClinVar as [Pathogenic]. Clinvar id is 6752.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
OCLN	NM_001205254.2	c.656T>C	p.Phe219Ser	missense_variant	3/9	ENST00000396442.7	NP_001192183.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
OCLN	ENST00000396442.7	c.656T>C	p.Phe219Ser	missense_variant	3/9	1	NM_001205254.2	ENSP00000379719.2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000274 AC: 4 AN: 1461852 Hom.: 0 Cov.: 34 AF XY: 0.00000413 AC XY: 3 AN XY: 727228

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

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: 0.00000360

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

Submissions by phenotype

Pseudo-TORCH syndrome 1 Pathogenic:1

Pathogenic, no assertion criteria provided

literature only

OMIM

Sep 10, 2010

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.95
BayesDel_addAF	Pathogenic	0.22	D
BayesDel_noAF	Uncertain	0.070
CADD	Uncertain	24
DANN	Uncertain	1.0
DEOGEN2	Benign	0.19	T;T
Eigen	Uncertain	0.31
Eigen_PC	Benign	0.22
FATHMM_MKL	Uncertain	0.90	D
LIST_S2	Benign	0.70	.;T
M_CAP	Benign	0.079	D
MetaRNN	Pathogenic	0.86	D;D
MetaSVM	Uncertain	0.21	D
MutationAssessor	Uncertain	2.1	M;M
PrimateAI	Uncertain	0.68	T
PROVEAN	Uncertain	-2.6	D;D
REVEL	Uncertain	0.57
Sift	Uncertain	0.029	D;D
Sift4G	Uncertain	0.038	D;D
Polyphen		1.0	D;D
Vest4		0.87
MutPred		0.62		Gain of glycosylation at F219 (P = 0.0213);Gain of glycosylation at F219 (P = 0.0213);
MVP		0.77
MPC		0.41
ClinPred		0.94	D
GERP RS		3.0
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.29
gMVP		0.90

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: rs267606926; hg19: chr5-68805573;