7-5905234-A-C

Position:

• chr7-5905234-A-C

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2 PP3

The NM_015622.6(CCZ1):​c.663A>C​(p.Lys221Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 27)
• Consequence: CCZ1 NM_015622.6 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.27

Genes affected

CCZ1 (HGNC:21691): (CCZ1 homolog, vacuolar protein trafficking and biogenesis associated) Enables guanyl-nucleotide exchange factor activity. Predicted to be involved in vesicle-mediated transport. Located in intracellular membrane-bounded organelle. Part of Mon1-Ccz1 complex. [provided by Alliance of Genome Resources, Apr 2022]

CCZ1 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.833

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CCZ1	NM_015622.6	c.663A>C	p.Lys221Asn	missense_variant	7/15	ENST00000325974.9	NP_056437.4
CCZ1	XM_047420465.1	c.663A>C	p.Lys221Asn	missense_variant	7/11		XP_047276421.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CCZ1	ENST00000325974.9	c.663A>C	p.Lys221Asn	missense_variant	7/15	1	NM_015622.6	ENSP00000325681.6
CCZ1	ENST00000628813.2	c.*332A>C		3_prime_UTR_variant	6/14	2		ENSP00000486988.1
CCZ1	ENST00000483394.1	n.290A>C		non_coding_transcript_exon_variant	2/3	4

Frequencies

GnomAD3 genomes Cov.: 27

GnomAD4 exome Cov.: 27

GnomAD4 genome Cov.: 27

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

Jun 22, 2023

The c.663A>C (p.K221N) alteration is located in exon 7 (coding exon 7) of the CCZ1 gene. This alteration results from a A to C substitution at nucleotide position 663, causing the lysine (K) at amino acid position 221 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
BayesDel_addAF	Uncertain	0.013	T
BayesDel_noAF	Benign	-0.22
CADD	Benign	22
DANN	Uncertain	1.0
DEOGEN2	Benign	0.24	T
Eigen	Uncertain	0.33
Eigen_PC	Uncertain	0.31
FATHMM_MKL	Uncertain	0.84	D
M_CAP	Benign	0.0078	T
MetaRNN	Pathogenic	0.83	D
MetaSVM	Benign	-0.72	T
MutationTaster	Benign	1.0	D;D
PrimateAI	Uncertain	0.75	T
PROVEAN	Uncertain	-3.5	D
REVEL	Uncertain	0.33
Sift	Uncertain	0.0060	D
Sift4G	Uncertain	0.0050	D
Vest4		0.93
MutPred		0.65		Loss of ubiquitination at K221 (P = 0.0141);
MVP		0.19
ClinPred		0.98	D
GERP RS		3.5
Varity_R		0.51
gMVP		0.75

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr7-5944865;