19-15544257-C-A

Variant names:

• chr19-15544257-C-A
• rs201129618
• NM_173483.4:c.1114C>A

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 2P and 3B. PM2 BP4_Moderate BP7

The NM_173483.4(CYP4F22):​c.1114C>A​(p.Arg372Arg) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 31)
• Consequence: CYP4F22 NM_173483.4 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.36
• Publications: 4 publications found

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

ACMG classification

Our verdict: Likely_benign. The variant received -1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.2).
• BP7: Synonymous conserved (PhyloP=1.36 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CYP4F22	NM_173483.4	c.1114C>A	p.Arg372Arg	synonymous_variant	Exon 10 of 14	ENST00000269703.8	NP_775754.2
CYP4F22	XM_011527692.3	c.1114C>A	p.Arg372Arg	synonymous_variant	Exon 11 of 15		XP_011525994.1
CYP4F22	XM_011527693.3	c.1114C>A	p.Arg372Arg	synonymous_variant	Exon 10 of 14		XP_011525995.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CYP4F22	ENST00000269703.8	c.1114C>A	p.Arg372Arg	synonymous_variant	Exon 10 of 14	2	NM_173483.4	ENSP00000269703.1
CYP4F22	ENST00000601005.2	c.1114C>A	p.Arg372Arg	synonymous_variant	Exon 8 of 12	5		ENSP00000469866.1

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 31

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.20
CADD	Benign	14
DANN	Benign	0.65
PhyloP100		1.4

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

dbSNP: rs201129618; hg19: chr19-15655068;