7-99861641-A-C

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_057095.3(CYP3A43):c.1055A>C(p.Gln352Pro) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: CYP3A43 NM_057095.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.47

Genes affected

CYP3A43 (HGNC:17450): (cytochrome P450 family 3 subfamily A member 43) This gene encodes a member of the cytochrome P450 superfamily of enzymes. The cytochrome P450 proteins are monooxygenases which catalyze many reactions involved in drug metabolism and synthesis of cholesterol, steroids and other lipids. The encoded protein has a low level of testosterone hydroxylase activity, and may play a role in aging mechanisms and cancer progression. This gene is part of a cluster of cytochrome P450 genes on chromosome 7q21.1. Alternate splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Jul 2013]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CYP3A43	NM_057095.3	c.1055A>C	p.Gln352Pro	missense_variant	11/13	ENST00000354829.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CYP3A43	ENST00000354829.7	c.1055A>C	p.Gln352Pro	missense_variant	11/13	1	NM_057095.3	A1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

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

Dec 14, 2023

The c.1055A>C (p.Q352P) alteration is located in exon 11 (coding exon 11) of the CYP3A43 gene. This alteration results from a A to C substitution at nucleotide position 1055, causing the glutamine (Q) at amino acid position 352 to be replaced by a proline (P). 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	Benign	0.31
BayesDel_addAF	Uncertain	0.094	D
BayesDel_noAF	Benign	-0.10
Cadd	Uncertain	24
Dann	Uncertain	0.99
DEOGEN2	Benign	0.13	T;.;.;.;.;.
Eigen	Uncertain	0.34
Eigen_PC	Benign	0.14
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Uncertain	0.97	D;D;D;D;D;D
M_CAP	Benign	0.022	T
MetaRNN	Uncertain	0.74	D;D;D;D;D;D
MetaSVM	Uncertain	0.53	D
MutationAssessor	Pathogenic	3.9	H;.;.;.;H;H
MutationTaster	Benign	0.97	D;D;D;D;D;D;D
PrimateAI	Benign	0.41	T
PROVEAN	Pathogenic	-4.9	D;D;D;D;D;D
REVEL	Uncertain	0.50
Sift	Uncertain	0.0050	D;D;D;D;D;D
Sift4G	Uncertain	0.020	D;D;D;D;D;D
Polyphen		0.75	P;.;.;.;P;.
Vest4		0.54
MutPred		0.58		Gain of phosphorylation at Y347 (P = 0.1545);.;.;.;Gain of phosphorylation at Y347 (P = 0.1545);Gain of phosphorylation at Y347 (P = 0.1545);
MVP		0.84
MPC		0.17
ClinPred		0.99	D
GERP RS		2.7
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.2
Varity_R		0.95
gMVP		0.79

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr7-99459264;