NM_006019.4:c.2185T>C

Variant names:

• chr11-68050203-T-C
• rs1279951928
• NM_006019.4:c.2185T>C

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PM2 PP3_Strong

The NM_006019.4(TCIRG1):​c.2185T>C​(p.Ser729Pro) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (no stars).

• Frequency: Genomes: not found (cov: 33)
• Consequence: TCIRG1 NM_006019.4 missense
• Clinical Significance: Uncertain significance no assertion criteria provided U:1
• Conservation: PhyloP100: 6.11
• Publications: 1 publications found

Genes affected

TCIRG1 (HGNC:11647): (T cell immune regulator 1, ATPase H+ transporting V0 subunit a3) This gene encodes a subunit of a large protein complex known as a vacuolar H+-ATPase (V-ATPase). The protein complex acts as a pump to move protons across the membrane. This movement of protons helps regulate the pH of cells and their surrounding environment. V-ATPase dependent organelle acidification is necessary for such intracellular processes as protein sorting, zymogen activation, and receptor-mediated endocytosis. V-ATPase is comprised of a cytosolic V1 domain and a transmembrane V0 domain. Alternative splicing results in multiple transcript variants. Mutations in this gene are associated with infantile malignant osteopetrosis. [provided by RefSeq, May 2017]

TCIRG1 Gene-Disease associations (from GenCC):

• autosomal recessive osteopetrosis

  Inheritance: AR Classification: DEFINITIVE, SUPPORTIVE Submitted by: Myriad Women’s Health, Orphanet
• autosomal recessive osteopetrosis 1

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Genomics England PanelApp, ClinGen, Labcorp Genetics (formerly Invitae)
• autosomal dominant severe congenital neutropenia

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• autosomal recessive osteopetrosis 6

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• dysosteosclerosis

  Inheritance: AR Classification: SUPPORTIVE, LIMITED Submitted by: Orphanet, ClinGen

ACMG classification

Our verdict: Likely_pathogenic. The variant received 6 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.973

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_006019.4. 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
	TCIRG1	NM_006019.4	MANE Select	c.2185T>C	p.Ser729Pro	missense	Exon 18 of 20	NP_006010.2
	TCIRG1	NM_001440552.1		c.2185T>C	p.Ser729Pro	missense	Exon 19 of 21	NP_001427481.1
	TCIRG1	NM_001440553.1		c.2185T>C	p.Ser729Pro	missense	Exon 18 of 20	NP_001427482.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TCIRG1	ENST00000265686.8	TSL:1 MANE Select	c.2185T>C	p.Ser729Pro	missense	Exon 18 of 20	ENSP00000265686.3
	TCIRG1	ENST00000532635.5	TSL:1	c.1537T>C	p.Ser513Pro	missense	Exon 13 of 15	ENSP00000434407.1
	TCIRG1	ENST00000530063.1	TSL:1	c.88T>C	p.Ser30Pro	missense	Exon 2 of 3	ENSP00000432957.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 33

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ClinVar

ClinVar submissions as Germline

Significance: Uncertain significance

Revision: no assertion criteria provided

Pathogenic	VUS	Benign	Condition
-	1	-	Autosomal recessive osteopetrosis 1 (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.99
BayesDel_addAF	Pathogenic	0.49	D
BayesDel_noAF	Pathogenic	0.46
CADD	Pathogenic	31
DANN	Uncertain	1.0
DEOGEN2	Pathogenic	0.93	D
Eigen	Pathogenic	0.77
Eigen_PC	Uncertain	0.64
FATHMM_MKL	Uncertain	0.94	D
LIST_S2	Pathogenic	1.0	D
M_CAP	Pathogenic	0.54	D
MetaRNN	Pathogenic	0.97	D
MetaSVM	Pathogenic	0.93	D
MutationAssessor	Pathogenic	3.7	H
PhyloP100		6.1
PrimateAI	Uncertain	0.77	T
PROVEAN	Pathogenic	-4.5	D
REVEL	Pathogenic	0.96
Sift	Pathogenic	0.0	D
Sift4G	Pathogenic	0.0010	D
Polyphen		1.0	D
Vest4		0.97
MutPred		0.87		Loss of catalytic residue at S729 (P = 0.0151)
MVP		0.99
MPC		0.75
ClinPred		1.0	D
GERP RS		3.8
PromoterAI		-0.027	Neutral
Varity_R		0.86
gMVP		0.97
Mutation Taster		=5/95	disease causing

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: rs1279951928; hg19: chr11-67817670;