Genetic Variant CRYZL1:p.Lys310Asn (chr21-33591182-C-A) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

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

The NM_145858.3(CRYZL1):c.930G>T(p.Lys310Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000745 in 1,610,342 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000069 ( 0 hom. )

Consequence

CRYZL1
NM_145858.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.46

Variant links:

Genes affected

CRYZL1 (HGNC:2420): (crystallin zeta like 1) This gene encodes a protein that has sequence similarity to zeta crystallin, also known as quinone oxidoreductase. This zeta crystallin-like protein also contains an NAD(P)H binding site. Alternatively spliced transcript variants have been observed but their full-length nature has not been completely determined. [provided by RefSeq, Jul 2008]

CRYZL1 links:

ENSG00000249209 (HGNC:):

ENSG00000249209 links:

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ACMG classification

Classification made for transcript

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 rank	MANE	Protein	UniProt
CRYZL1	NM_145858.3 link	c.930G>T	p.Lys310Asn	missense_variant	Exon 12 of 13	ENST00000381554.8	NP_665857.2	O95825-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
CRYZL1	ENST00000381554.8 link	c.930G>T	p.Lys310Asn	missense_variant	Exon 12 of 13	1	NM_145858.3	ENSP00000370966.3	O95825-1
CRYZL1	ENST00000381540.7 link	c.934G>T	p.Val312Phe	missense_variant	Exon 12 of 13	2		ENSP00000370951.3	A6NND8
ENSG00000249209	ENST00000429238.2 link	c.442-5001G>T		intron_variant	Intron 6 of 7	5		ENSP00000394107.2	H7C0C1

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152200

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000686

AC:

AN:

1458142

Hom.:

Cov.:

AF XY:

0.00000965

AC XY:

AN XY:

725724

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000722

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000131

AC:

AN:

152200

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74342

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000508

Hom.:

Bravo

AF:

0.0000113

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Dec 10, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.930G>T (p.K310N) alteration is located in exon 12 (coding exon 11) of the CRYZL1 gene. This alteration results from a G to T substitution at nucleotide position 930, causing the lysine (K) at amino acid position 310 to be replaced by an asparagine (N). 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

Pathogenic

0.73

BayesDel_addAF

Benign

-0.19

BayesDel_noAF

Benign

-0.51

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.033

T;T

Eigen

Uncertain

0.31

Eigen_PC

Uncertain

0.37

FATHMM_MKL

Uncertain

0.90

LIST_S2

Benign

0.80

T;T

M_CAP

Benign

0.050

MetaRNN

Uncertain

0.48

T;T

MetaSVM

Benign

-1.2

MutationAssessor

Benign

1.6

L;.

PrimateAI

Uncertain

0.63

PROVEAN

Uncertain

-2.6

D;D

REVEL

Benign

0.11

Sift

Uncertain

0.026

D;D

Sift4G

Benign

0.066

T;D

Polyphen

0.48

P;.

Vest4

0.59

MutPred

0.51

Loss of helix (P = 0.079);.;

MVP

0.51

MPC

0.27

ClinPred

0.94

GERP RS

4.3

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.44

gMVP

0.70

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.11

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over