NM_004391.3:c.1064C>A

Variant names:

• chr3-42874753-G-T
• NM_004391.3:c.1064C>A

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_004391.3(CYP8B1):​c.1064C>A​(p.Thr355Asn) 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: CYP8B1 NM_004391.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.44
• Publications: 0 publications found

Genes affected

CYP8B1 (HGNC:2653): (cytochrome P450 family 8 subfamily B member 1) 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. This endoplasmic reticulum membrane protein catalyzes the conversion of 7 alpha-hydroxy-4-cholesten-3-one into 7-alpha,12-alpha-dihydroxy-4-cholesten-3-one. The balance between these two steroids determines the relative amounts of cholic acid and chenodeoxycholic acid both of which are secreted in the bile and affect the solubility of cholesterol. This gene is unique among the cytochrome P450 genes in that it is intronless. [provided by RefSeq, Jul 2008]

ENSG00000290317 (HGNC:):

ACKR2 (HGNC:1565): (atypical chemokine receptor 2) This gene encodes a beta chemokine receptor, which is predicted to be a seven transmembrane protein similar to G protein-coupled receptors. Chemokines and their receptor-mediated signal transduction are critical for the recruitment of effector immune cells to the inflammation site. This gene is expressed in a range of tissues and hemopoietic cells. The expression of this receptor in lymphatic endothelial cells and overexpression in vascular tumors suggested its function in chemokine-driven recirculation of leukocytes and possible chemokine effects on the development and growth of vascular tumors. This receptor appears to bind the majority of beta-chemokine family members; however, its specific function remains unknown. This gene is mapped to chromosome 3p21.3, a region that includes a cluster of chemokine receptor genes. [provided by RefSeq, Jul 2008]

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

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

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_004391.3. 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
	CYP8B1	NM_004391.3	MANE Select	c.1064C>A	p.Thr355Asn	missense	Exon 1 of 1	NP_004382.2	Q9UNU6

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CYP8B1	ENST00000316161.6	TSL:6 MANE Select	c.1064C>A	p.Thr355Asn	missense	Exon 1 of 1	ENSP00000318867.4	Q9UNU6
	CYP8B1	ENST00000437102.1	TSL:1	c.1064C>A	p.Thr355Asn	missense	Exon 1 of 2	ENSP00000404499.1	C9JFR9
	ENSG00000290317	ENST00000426937.5	TSL:3	c.-163-34040G>T		intron	N/A	ENSP00000413859.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

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	0.35
BayesDel_addAF	Benign	-0.25	T
BayesDel_noAF	Benign	-0.60
CADD	Benign	18
DANN	Uncertain	0.99
DEOGEN2	Benign	0.021	T
Eigen	Uncertain	0.20
Eigen_PC	Benign	0.096
FATHMM_MKL	Uncertain	0.92	D
LIST_S2	Benign	0.82	T
M_CAP	Benign	0.021	T
MetaRNN	Uncertain	0.45	T
MetaSVM	Benign	-0.97	T
MutationAssessor	Uncertain	2.1	M
PhyloP100		4.4
PrimateAI	Benign	0.30	T
PROVEAN	Benign	-1.8	N
REVEL	Benign	0.17
Sift	Uncertain	0.012	D
Sift4G	Uncertain	0.018	D
Polyphen		0.99	D
Vest4		0.35
MutPred		0.53		Gain of glycosylation at T355 (P = 0.1416)
MVP		0.040
MPC		0.58
ClinPred		0.79	D
GERP RS		1.7
Varity_R		0.12
gMVP		0.56
Mutation Taster		=91/9	polymorphism

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

hg19: chr3-42916245;