chr9-35676169-C-T

Position:

• chr9-35676169-C-T

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM2 PP3_Strong

The NM_001216.3(CA9):​c.710C>T​(p.Ser237Leu) variant causes a missense change. The variant allele was found at a frequency of 0.00000137 in 1,459,950 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 (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: CA9 NM_001216.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.01

Genes affected

CA9 (HGNC:1383): (carbonic anhydrase 9) Carbonic anhydrases (CAs) are a large family of zinc metalloenzymes that catalyze the reversible hydration of carbon dioxide. They participate in a variety of biological processes, including respiration, calcification, acid-base balance, bone resorption, and the formation of aqueous humor, cerebrospinal fluid, saliva, and gastric acid. They show extensive diversity in tissue distribution and in their subcellular localization. CA IX is a transmembrane protein and is one of only two tumor-associated carbonic anhydrase isoenzymes known. It is expressed in all clear-cell renal cell carcinoma, but is not detected in normal kidney or most other normal tissues. It may be involved in cell proliferation and transformation. This gene was mapped to 17q21.2 by fluorescence in situ hybridization, however, radiation hybrid mapping localized it to 9p13-p12. [provided by RefSeq, Jun 2014]

ACMG classification

Verdict is Likely_pathogenic. Variant got 6 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.985

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CA9	NM_001216.3	c.710C>T	p.Ser237Leu	missense_variant	4/11	ENST00000378357.9
CA9	XM_047423849.1	c.710C>T	p.Ser237Leu	missense_variant	4/6
CA9	XM_047423850.1	c.710C>T	p.Ser237Leu	missense_variant	4/6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CA9	ENST00000378357.9	c.710C>T	p.Ser237Leu	missense_variant	4/11	1	NM_001216.3	P1
CA9	ENST00000493245.1	n.7C>T		non_coding_transcript_exon_variant	1/7	5

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1459950 Hom.: 0 Cov.: 33 AF XY: 0.00000138 AC XY: 1 AN XY: 726248

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: 0.00000180

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ExAC AF: 0.00000824 AC: 1

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Sep 20, 2023

The c.710C>T (p.S237L) alteration is located in exon 4 (coding exon 4) of the CA9 gene. This alteration results from a C to T substitution at nucleotide position 710, causing the serine (S) at amino acid position 237 to be replaced by a leucine (L). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.85
BayesDel_addAF	Pathogenic	0.36	D
BayesDel_noAF	Pathogenic	0.27
CADD	Pathogenic	31
DANN	Pathogenic	1.0
DEOGEN2	Uncertain	0.78	D;.
Eigen	Pathogenic	0.78
Eigen_PC	Uncertain	0.63
FATHMM_MKL	Uncertain	0.87	D
LIST_S2	Uncertain	0.91	D;D
M_CAP	Uncertain	0.24	D
MetaRNN	Pathogenic	0.99	D;D
MetaSVM	Uncertain	0.45	D
MutationAssessor	Pathogenic	4.4	H;.
MutationTaster	Benign	1.0	D
PrimateAI	Uncertain	0.68	T
PROVEAN	Pathogenic	-5.5	D;.
REVEL	Pathogenic	0.69
Sift	Pathogenic	0.0	D;.
Sift4G	Pathogenic	0.0010	D;D
Polyphen		1.0	D;.
Vest4		0.92
MutPred		0.91		Loss of disorder (P = 0.0525);Loss of disorder (P = 0.0525);
MVP		0.94
MPC		0.62
ClinPred		1.0	D
GERP RS		4.7
Varity_R		0.97
gMVP		0.97

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: rs768211018; hg19: chr9-35676166;