chr12-121626755-C-A

Variant names:

• chr12-121626755-C-A
• rs1253665950
• ENST00000617316.2:c.13C>A

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The ENST00000617316.2(ORAI1):​c.13C>A​(p.Pro5Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000186 in 1,077,206 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts 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. P5L) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 30)
  • Exomes 𝑓: 0.0000019 (0 hom.)
• Consequence: ORAI1 ENST00000617316.2 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.35
• Publications: 0 publications found

Genes affected

ORAI1 (HGNC:25896): (ORAI calcium release-activated calcium modulator 1) The protein encoded by this gene is a membrane calcium channel subunit that is activated by the calcium sensor STIM1 when calcium stores are depleted. This type of channel is the primary way for calcium influx into T-cells. Defects in this gene are a cause of immune dysfunction with T-cell inactivation due to calcium entry defect type 1 (IDTICED1). [provided by RefSeq, Sep 2011]

ORAI1 Gene-Disease associations (from GenCC):

• tubular aggregate myopathy

  Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: Orphanet, ClinGen
• myopathy, tubular aggregate, 2

  Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
• combined immunodeficiency due to ORAI1 deficiency

  Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet
• Stormorken syndrome

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ENSG00000302371 (HGNC:):

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.21677738).

Variant Effect in Transcripts

ACMG analysis was done for transcript: ENST00000617316.2. 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
	ORAI1	NR_186857.1		n.226C>A		non_coding_transcript_exon	Exon 1 of 2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ORAI1	ENST00000617316.2	TSL:1	c.13C>A	p.Pro5Thr	missense	Exon 1 of 3	ENSP00000482568.2	Q96D31-1
	ORAI1	ENST00000646827.1		n.206C>A		non_coding_transcript_exon	Exon 1 of 2
	ORAI1	ENST00000698901.2		n.247C>A		non_coding_transcript_exon	Exon 1 of 2

Frequencies

GnomAD3 genomes Cov.: 30

GnomAD4 exome AF: 0.00000186 AC: 2 AN: 1077206 Hom.: 0 Cov.: 29 AF XY: 0.00000195 AC XY: 1 AN XY: 514114

African (AFR) AF: 0.00 AC: 0 AN: 21310

American (AMR) AF: 0.00 AC: 0 AN: 7028

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 12356

East Asian (EAS) AF: 0.00 AC: 0 AN: 22426

South Asian (SAS) AF: 0.00 AC: 0 AN: 23038

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 31146

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 2758

European-Non Finnish (NFE) AF: 0.00000218 AC: 2 AN: 915488

Other (OTH) AF: 0.00 AC: 0 AN: 41656

GnomAD4 genome Cov.: 30

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.076
BayesDel_addAF	Uncertain	0.031	T
BayesDel_noAF	Benign	-0.19
CADD	Benign	20
DANN	Uncertain	0.98
DEOGEN2	Benign	0.11	T
Eigen	Benign	-0.27
Eigen_PC	Benign	-0.18
FATHMM_MKL	Benign	0.35	N
LIST_S2	Benign	0.45	T
M_CAP	Pathogenic	0.92	D
MetaRNN	Benign	0.22	T
MetaSVM	Benign	-0.97	T
PhyloP100		1.4
PrimateAI	Pathogenic	0.89	D
Polyphen		0.025	B
MutPred		0.24		Gain of phosphorylation at P5 (P = 0.0042)
ClinPred		0.64	D
GERP RS		3.0
PromoterAI		-0.045	Neutral
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.6
Varity_R		0.22
gMVP		0.56
Mutation Taster		=98/2	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: rs1253665950; hg19: chr12-122064660;