chr11-69054755-C-T

Variant names:

• chr11-69054755-C-T
• rs769331767
• NM_139075.4:c.209C>T

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BS2

The NM_139075.4(TPCN2):​c.209C>T​(p.Ser70Leu) variant causes a missense change. The variant allele was found at a frequency of 0.0000936 in 1,614,014 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: 𝑓 0.000046 (0 hom., cov: 33)
  • Exomes 𝑓: 0.000099 (0 hom.)
• Consequence: TPCN2 NM_139075.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.71
• Publications: 0 publications found

Genes affected

TPCN2 (HGNC:20820): (two pore segment channel 2) This gene encodes a putative cation-selective ion channel with two repeats of a six-transmembrane-domain. The protein localizes to lysosomal membranes and enables nicotinic acid adenine dinucleotide phosphate (NAADP) -induced calcium ion release from lysosome-related stores. This ubiquitously expressed gene has elevated expression in liver and kidney. Two common nonsynonymous SNPs in this gene strongly associate with blond versus brown hair pigmentation.[provided by RefSeq, Dec 2009]

TPCN2 Gene-Disease associations (from GenCC):

• albinism

  Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics

ACMG classification

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

• BS2: High AC in GnomAd4 at 7 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_139075.4. 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
	TPCN2	NM_139075.4	MANE Select	c.209C>T	p.Ser70Leu	missense	Exon 3 of 25	NP_620714.2	Q8NHX9

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TPCN2	ENST00000294309.8	TSL:1 MANE Select	c.209C>T	p.Ser70Leu	missense	Exon 3 of 25	ENSP00000294309.3	Q8NHX9
	TPCN2	ENST00000897239.1		c.209C>T	p.Ser70Leu	missense	Exon 3 of 25	ENSP00000567298.1
	TPCN2	ENST00000897242.1		c.209C>T	p.Ser70Leu	missense	Exon 3 of 25	ENSP00000567301.1

Frequencies

GnomAD3 genomes AF: 0.0000460 AC: 7 AN: 152172 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.0000483

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000829

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000147

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.000123 AC: 31 AN: 251348 AF XY: 0.000118

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.0000544

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000176

Gnomad OTH exome AF: 0.000163

GnomAD4 exome AF: 0.0000985 AC: 144 AN: 1461842 Hom.: 0 Cov.: 31 AF XY: 0.000102 AC XY: 74 AN XY: 727222

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44716

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26134

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.000765 AC: 66 AN: 86248

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

Middle Eastern (MID) AF: 0.000173 AC: 1 AN: 5768

European-Non Finnish (NFE) AF: 0.0000665 AC: 74 AN: 1111982

Other (OTH) AF: 0.0000497 AC: 3 AN: 60396

GnomAD4 genome AF: 0.0000460 AC: 7 AN: 152172 Hom.: 0 Cov.: 33 AF XY: 0.0000538 AC XY: 4 AN XY: 74338

African (AFR) AF: 0.0000483 AC: 2 AN: 41430

American (AMR) AF: 0.00 AC: 0 AN: 15286

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.00 AC: 0 AN: 5188

South Asian (SAS) AF: 0.000829 AC: 4 AN: 4824

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10622

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000147 AC: 1 AN: 68030

Other (OTH) AF: 0.00 AC: 0 AN: 2094

Alfa AF: 0.0000450 Hom.: 0

Bravo AF: 0.0000227

ExAC AF: 0.000115 AC: 14

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.53
BayesDel_addAF	Benign	-0.039	T
BayesDel_noAF	Uncertain	0.10
CADD	Uncertain	24
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.63	D
Eigen	Uncertain	0.36
Eigen_PC	Uncertain	0.22
FATHMM_MKL	Uncertain	0.86	D
LIST_S2	Uncertain	0.97	D
M_CAP	Pathogenic	0.63	D
MetaRNN	Uncertain	0.69	D
MetaSVM	Pathogenic	1.1	D
MutationAssessor	Uncertain	2.8	M
PhyloP100		4.7
PrimateAI	Benign	0.44	T
PROVEAN	Uncertain	-4.0	D
REVEL	Uncertain	0.61
Sift	Uncertain	0.0020	D
Sift4G	Pathogenic	0.0	D
Polyphen		1.0	D
Vest4		0.78
MutPred		0.55		Gain of MoRF binding (P = 0.0731)
MVP		0.89
MPC		0.61
ClinPred		0.86	D
GERP RS		3.7
Varity_R		0.62
gMVP		0.79
Mutation Taster		=47/53	disease causing

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.020		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: rs769331767; hg19: chr11-68822223; COSMIC: COSV53729986; COSMIC: COSV53729986;