dbSNP rs118091316: CYP4F22:p.Phe59Leu (chr19-15525513-C-A) – ACMG Classification: Pathogenic (14 pts)

Variant summary

Our verdict is Pathogenic. The variant received 14 ACMG points: 14P and 0B. PS1_Very_StrongPM2PP3_Strong

The NM_173483.4(CYP4F22):c.177C>A(p.Phe59Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000685 in 1,459,876 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic 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 Likely pathogenic in ClinVar. Synonymous variant affecting the same amino acid position (i.e. F59F) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

CYP4F22
NM_173483.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 2.06

Publications

0 publications found

Variant links:

Genes affected

CYP4F22 (HGNC:26820): (cytochrome P450 family 4 subfamily F member 22) 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 gene is part of a cluster of cytochrome P450 genes on chromosome 19 and encodes an enzyme thought to play a role in the 12(R)-lipoxygenase pathway. Mutations in this gene are the cause of ichthyosis lamellar type 3. [provided by RefSeq, Jul 2008]

CYP4F22 Gene-Disease associations (from GenCC):

autosomal recessive congenital ichthyosis 5
Inheritance: AR Classification: STRONG Submitted by: Genomics England PanelApp, PanelApp Australia, Labcorp Genetics (formerly Invitae)
lamellar ichthyosis
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

CYP4F22 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Pathogenic. The variant received 14 ACMG points.

PS1

Transcript NM_173483.4 (CYP4F22) is affected with MISSENSE_VARIANT having same AA change as one Pathogenic present in ClinVar.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.962

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CYP4F22	NM_173483.4 link	c.177C>A	p.Phe59Leu	missense_variant	Exon 3 of 14	ENST00000269703.8	NP_775754.2	Q6NT55
CYP4F22	XM_011527692.3 link	c.177C>A	p.Phe59Leu	missense_variant	Exon 4 of 15		XP_011525994.1	Q6NT55
CYP4F22	XM_011527693.3 link	c.177C>A	p.Phe59Leu	missense_variant	Exon 3 of 14		XP_011525995.1	Q6NT55

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CYP4F22	ENST00000269703.8 link	c.177C>A	p.Phe59Leu	missense_variant	Exon 3 of 14	2	NM_173483.4	ENSP00000269703.1		Q6NT55
CYP4F22	ENST00000601005.2 link	c.177C>A	p.Phe59Leu	missense_variant	Exon 1 of 12	5		ENSP00000469866.1		Q6NT55

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.85e-7

AC:

AN:

1459876

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

726336

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33476

American (AMR)

AF:

0.00

AC:

AN:

44722

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26134

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86252

European-Finnish (FIN)

AF:

0.00

AC:

AN:

51634

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5740

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1111862

Other (OTH)

AF:

0.00

AC:

AN:

60356

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.96

BayesDel_addAF

Pathogenic

0.36

BayesDel_noAF

Pathogenic

0.28

CADD

Benign

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.33

T;T

Eigen

Uncertain

0.24

Eigen_PC

Uncertain

0.25

FATHMM_MKL

Uncertain

0.85

LIST_S2

Uncertain

0.95

.;D

M_CAP

Uncertain

0.12

MetaRNN

Pathogenic

0.96

D;D

MetaSVM

Uncertain

0.23

MutationAssessor

Uncertain

2.7

M;M

PhyloP100

2.1

PrimateAI

Uncertain

0.57

PROVEAN

Pathogenic

-5.1

D;.

REVEL

Pathogenic

0.70

Sift

Uncertain

0.0020

D;.

Sift4G

Uncertain

0.0060

D;D

Polyphen

1.0

D;D

Vest4

0.83

MutPred

0.83

Gain of catalytic residue at F59 (P = 0.0045);Gain of catalytic residue at F59 (P = 0.0045);

MVP

0.94

MPC

0.87

ClinPred

1.0

GERP RS

3.8

PromoterAI

-0.011

Neutral

(source)

Varity_R

0.82

gMVP

0.68

Mutation Taster

=8/92

disease causing

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over