chr14-24507430-G-C

Variant names:

• chr14-24507430-G-C
• rs1001813145
• NM_001836.5:c.135C>G

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_001836.5(CMA1):​c.135C>G​(p.Asn45Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000205 in 1,461,870 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 17/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another nucleotide change resulting in the same amino acid substitution has been previously reported as Uncertain significance in ClinVar.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: CMA1 NM_001836.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -1.02
• Publications: 2 publications found

Genes affected

CMA1 (HGNC:2097): (chymase 1) This gene encodes a chymotryptic serine proteinase that belongs to the peptidase family S1. It is expressed in mast cells and is thought to function in the degradation of the extracellular matrix, the regulation of submucosal gland secretion, and the generation of vasoactive peptides. In the heart and blood vessels, this protein, rather than angiotensin converting enzyme, is largely responsible for converting angiotensin I to the vasoactive peptide angiotensin II. Alternative splicing results in multiple variants. [provided by RefSeq, Apr 2015]

ENSG00000258744 (HGNC:):

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.050951213).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001836.5. 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
	CMA1	NM_001836.5	MANE Select	c.135C>G	p.Asn45Lys	missense	Exon 2 of 5	NP_001827.1	P23946-1
	CMA1	NM_001308083.2		c.-125+748C>G		intron	N/A	NP_001295012.1	P23946-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CMA1	ENST00000250378.7	TSL:1 MANE Select	c.135C>G	p.Asn45Lys	missense	Exon 2 of 5	ENSP00000250378.3	P23946-1
	CMA1	ENST00000206446.4	TSL:1	c.-125+748C>G		intron	N/A	ENSP00000206446.4	P23946-2
	ENSG00000258744	ENST00000555109.2	TSL:5	n.552-704G>C		intron	N/A

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.00000796 AC: 2 AN: 251252 AF XY: 0.0000147

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000205 AC: 3 AN: 1461870 Hom.: 0 Cov.: 31 AF XY: 0.00000413 AC XY: 3 AN XY: 727236

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

American (AMR) AF: 0.00 AC: 0 AN: 44722

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

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

South Asian (SAS) AF: 0.0000348 AC: 3 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53420

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5766

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1111992

Other (OTH) AF: 0.00 AC: 0 AN: 60396

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.13
BayesDel_addAF	Benign	-0.41	T
BayesDel_noAF	Benign	-0.64
CADD	Benign	0.077
DANN	Benign	0.45
DEOGEN2	Benign	0.21	T
Eigen	Benign	-2.1
Eigen_PC	Benign	-2.1
FATHMM_MKL	Benign	0.0025	N
LIST_S2	Benign	0.17	T
M_CAP	Benign	0.030	D
MetaRNN	Benign	0.051	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.055	N
PhyloP100		-1.0
PrimateAI	Benign	0.24	T
PROVEAN	Benign	0.21	N
REVEL	Benign	0.21
Sift	Benign	0.99	T
Sift4G	Benign	0.91	T
Polyphen		0.0	B
Vest4		0.16
MutPred		0.42		Gain of methylation at N45 (P = 0.0139)
MVP		0.33
MPC		0.0026
ClinPred		0.033	T
GERP RS		-9.4
Varity_R		0.18
gMVP		0.47
Mutation Taster		=88/12	polymorphism

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: rs1001813145; hg19: chr14-24976636;