14-75071564-C-G

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_024643.4(ZC2HC1C):c.991C>G(p.Leu331Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,876 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: ZC2HC1C NM_024643.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.209

Genes affected

ZC2HC1C (HGNC:20354): (zinc finger C2HC-type containing 1C) Predicted to enable metal ion binding activity. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.20452061).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ZC2HC1C	NM_024643.4	c.991C>G	p.Leu331Val	missense_variant	2/3	ENST00000524913.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ZC2HC1C	ENST00000524913.3	c.991C>G	p.Leu331Val	missense_variant	2/3	2	NM_024643.4	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD3 exomes AF: 0.00000401 AC: 1 AN: 249436 Hom.: 0 AF XY: 0.00 AC XY: 0 AN XY: 135362

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.0000327

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461876 Hom.: 0 Cov.: 33 AF XY: 0.00 AC XY: 0 AN XY: 727238

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000232

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jan 29, 2024

The c.991C>G (p.L331V) alteration is located in exon 2 (coding exon 1) of the ZC2HC1C gene. This alteration results from a C to G substitution at nucleotide position 991, causing the leucine (L) at amino acid position 331 to be replaced by a valine (V). 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	Benign	0.17
BayesDel_addAF	Benign	-0.17	T
BayesDel_noAF	Benign	-0.39
Cadd	Benign	21
Dann	Uncertain	0.99
DEOGEN2	Benign	0.032	T;.
Eigen	Benign	0.0084
Eigen_PC	Benign	-0.14
FATHMM_MKL	Uncertain	0.81	D
LIST_S2	Benign	0.76	T;T
M_CAP	Benign	0.023	T
MetaRNN	Benign	0.20	T;T
MetaSVM	Benign	-0.78	T
MutationAssessor	Benign	1.9	L;.
MutationTaster	Benign	1.0	D;N;N
PrimateAI	Benign	0.39	T
PROVEAN	Benign	-0.84	N;N
REVEL	Benign	0.13
Sift	Uncertain	0.011	D;D
Sift4G	Benign	0.081	T;D
Vest4		0.34
MutPred		0.20		Gain of sheet (P = 0.0221);Gain of sheet (P = 0.0221);
MVP		0.15
MPC		0.50
ClinPred		0.66	D
GERP RS		3.0
Varity_R		0.12
gMVP		0.19

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

LitVar

Other links and lift over

dbSNP: rs754821064; hg19: chr14-75538267;