chr5-69504248-T-C

Variant names:

• chr5-69504248-T-C
• rs113706384
• NM_001205254.2:c.4T>C

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2 PP3

The NM_001205254.2(OCLN):​c.4T>C​(p.Ser2Pro) variant causes a missense change. The variant allele was found at a frequency of 0.00000137 in 1,456,280 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 Uncertain significance (★). Synonymous variant affecting the same amino acid position (i.e. S2S) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: OCLN NM_001205254.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.47
• Publications: 1 publications found

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]

OCLN Gene-Disease associations (from GenCC):

• pseudo-TORCH syndrome 1

  Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE Submitted by: PanelApp Australia, G2P, Labcorp Genetics (formerly Invitae), Ambry Genetics
• pseudo-TORCH syndrome

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ENSG00000249295 (HGNC:):

ACMG classification

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.777

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001205254.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	OCLN	NM_001205254.2	MANE Select	c.4T>C	p.Ser2Pro	missense	Exon 2 of 9	NP_001192183.1
	OCLN	NM_001438604.1		c.4T>C	p.Ser2Pro	missense	Exon 2 of 9	NP_001425533.1
	OCLN	NM_002538.4		c.4T>C	p.Ser2Pro	missense	Exon 2 of 9	NP_002529.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	OCLN	ENST00000396442.7	TSL:1 MANE Select	c.4T>C	p.Ser2Pro	missense	Exon 2 of 9	ENSP00000379719.2
	OCLN	ENST00000355237.6	TSL:1	c.4T>C	p.Ser2Pro	missense	Exon 2 of 9	ENSP00000347379.2
	OCLN	ENST00000538151.2	TSL:1	c.-71T>C		5_prime_UTR	Exon 1 of 7	ENSP00000445940.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1456280 Hom.: 0 Cov.: 27 AF XY: 0.00000138 AC XY: 1 AN XY: 724918

African (AFR) AF: 0.00 AC: 0 AN: 33364

American (AMR) AF: 0.00 AC: 0 AN: 44720

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26090

East Asian (EAS) AF: 0.00 AC: 0 AN: 39686

South Asian (SAS) AF: 0.00 AC: 0 AN: 86100

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53418

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00000181 AC: 2 AN: 1106930

Other (OTH) AF: 0.00 AC: 0 AN: 60204

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions as Germline

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	Pseudo-TORCH syndrome 1 (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.25
BayesDel_addAF	Pathogenic	0.22	D
BayesDel_noAF	Uncertain	0.080
CADD	Pathogenic	27
DANN	Uncertain	1.0
DEOGEN2	Benign	0.17	T
Eigen	Uncertain	0.63
Eigen_PC	Pathogenic	0.67
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Benign	0.43	T
M_CAP	Benign	0.057	D
MetaRNN	Pathogenic	0.78	D
MetaSVM	Uncertain	0.19	D
MutationAssessor	Benign	1.4	L
PhyloP100		5.5
PrimateAI	Uncertain	0.62	T
PROVEAN	Benign	-1.8	N
REVEL	Uncertain	0.39
Sift	Pathogenic	0.0	D
Sift4G	Uncertain	0.0090	D
Polyphen		1.0	D
Vest4		0.58
MutPred		0.19		Loss of phosphorylation at S2 (P = 0.0018)
MVP		0.94
MPC		0.40
ClinPred		0.94	D
GERP RS		6.1
PromoterAI		-0.081	Neutral
Varity_R		0.44
gMVP		0.56
Mutation Taster		=162/138	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: rs113706384; hg19: chr5-68800075;