Genetic Variant ENST00000395954.3:c.25G>A (chr20-54171669-C-T) – ACMG Classification: Uncertain_significance (5 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 5 ACMG points: 5P and 0B. PM1PM2PP3

The ENST00000395954.3(CYP24A1):c.25G>A(p.Glu9Lys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000274 in 1,461,688 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.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000027 ( 0 hom. )

Consequence

CYP24A1
ENST00000395954.3 missense

Scores

Splicing: ADA: 0.008921

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 7.27

Publications

0 publications found

Variant links:

Genes affected

CYP24A1 (HGNC:2602): (cytochrome P450 family 24 subfamily A 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 mitochondrial protein initiates the degradation of 1,25-dihydroxyvitamin D3, the physiologically active form of vitamin D3, by hydroxylation of the side chain. In regulating the level of vitamin D3, this enzyme plays a role in calcium homeostasis and the vitamin D endocrine system. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

CYP24A1 Gene-Disease associations (from GenCC):

hypercalcemia, infantile, 1
Inheritance: AR Classification: STRONG, LIMITED Submitted by: G2P, Laboratory for Molecular Medicine, Labcorp Genetics (formerly Invitae)
autosomal recessive infantile hypercalcemia
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

CYP24A1 links:

ENSG00000286587 (HGNC:):

ENSG00000286587 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 5 ACMG points.

PM1

In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 2 benign, 6 uncertain in ENST00000395954.3

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.81

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CYP24A1	NM_000782.5 link	c.451G>A	p.Glu151Lys	missense_variant, splice_region_variant	Exon 3 of 12	ENST00000216862.8	NP_000773.2	Q07973-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CYP24A1	ENST00000216862.8 link	c.451G>A	p.Glu151Lys	missense_variant, splice_region_variant	Exon 3 of 12	1	NM_000782.5	ENSP00000216862.3		Q07973-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000274

AC:

AN:

1461688

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

727158

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33476

American (AMR)

AF:

0.00

AC:

AN:

44716

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26132

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86250

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53418

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5762

European-Non Finnish (NFE)

AF:

0.00000270

AC:

AN:

1111858

Other (OTH)

AF:

0.0000166

AC:

AN:

60376

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.463

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

0.57

BayesDel_addAF

Pathogenic

0.17

BayesDel_noAF

Uncertain

0.010

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.62

D;.;.

Eigen

Uncertain

0.24

Eigen_PC

Benign

0.18

FATHMM_MKL

Uncertain

0.95

LIST_S2

Uncertain

0.94

D;D;T

M_CAP

Uncertain

0.086

MetaRNN

Pathogenic

0.81

D;D;D

MetaSVM

Benign

-0.39

MutationAssessor

Benign

1.9

L;L;.

PhyloP100

7.3

PrimateAI

Uncertain

0.61

PROVEAN

Uncertain

-2.4

N;N;N

REVEL

Benign

0.26

Sift

Uncertain

0.0090

D;D;D

Sift4G

Uncertain

0.022

D;D;D

Polyphen

0.96

D;.;.

Vest4

0.93

MutPred

0.59

Gain of MoRF binding (P = 0.0034);Gain of MoRF binding (P = 0.0034);.;

MVP

0.80

MPC

0.37

ClinPred

0.98

GERP RS

3.6

PromoterAI

0.035

Neutral

(source)

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.76

gMVP

0.87

Mutation Taster

=32/68

disease causing

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.0089

dbscSNV1_RF

Benign

0.058

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