chr7-4775715-G-C

Position:

• chr7-4775715-G-C

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_Strong BP6_Very_Strong BS1 BS2

The NM_014855.3(AP5Z1):​c.-1G>C variant causes a 5 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00118 in 1,606,994 control chromosomes in the GnomAD database, including 26 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.0052 (5 hom., cov: 32)
  • Exomes 𝑓: 0.00076 (21 hom.)
• Consequence: AP5Z1 NM_014855.3 5_prime_UTR
• Clinical Significance: Likely benign criteria provided, multiple submitters, no conflicts B:5
• Conservation: PhyloP100: -1.08

Genes affected

AP5Z1 (HGNC:22197): (adaptor related protein complex 5 subunit zeta 1) This gene was identified by genome-wide screen for genes involved in homologous recombination DNA double-strand break repair (HR-DSBR). The encoded protein was found in a complex with other proteins that have a role in HR-DSBR. Knockdown of this gene reduced homologous recombination, and mutations in this gene were found in patients with spastic paraplegia. It was concluded that this gene likely encodes a helicase (PMID:20613862). [provided by RefSeq, Jan 2011]

ACMG classification

Verdict is Benign. Variant got -20 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.76).
• BP6: Variant 7-4775715-G-C is Benign according to our data. Variant chr7-4775715-G-C is described in ClinVar as [Likely_benign]. Clinvar id is 585436.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BS1: Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00524 (799/152362) while in subpopulation AFR AF= 0.0176 (732/41586). AF 95% confidence interval is 0.0165. There are 5 homozygotes in gnomad4. There are 379 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.
• BS2: High Homozygotes in GnomAd4 at 5 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
AP5Z1	NM_014855.3	c.-1G>C		5_prime_UTR_variant	1/17	ENST00000649063.2	NP_055670.1
AP5Z1	NM_001364858.1	c.-282G>C		5_prime_UTR_variant	1/16		NP_001351787.1
AP5Z1	NR_157345.1	n.93G>C		non_coding_transcript_exon_variant	1/17

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
AP5Z1	ENST00000649063.2	c.-1G>C		5_prime_UTR_variant	1/17		NM_014855.3	ENSP00000497815	P1

Frequencies

GnomAD3 genomes AF: 0.00520 AC: 791 AN: 152244 Hom.: 5 Cov.: 32

Gnomad AFR AF: 0.0175

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00235

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000414

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00316

Gnomad NFE AF: 0.000220

Gnomad OTH AF: 0.00621

GnomAD3 exomes AF: 0.00148 AC: 358 AN: 242014 Hom.: 3 AF XY: 0.00118 AC XY: 156 AN XY: 132414

Gnomad AFR exome AF: 0.0176

Gnomad AMR exome AF: 0.00154

Gnomad ASJ exome AF: 0.000100

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.0000327

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.000251

Gnomad OTH exome AF: 0.00118

GnomAD4 exome AF: 0.000758 AC: 1103 AN: 1454632 Hom.: 21 Cov.: 31 AF XY: 0.000656 AC XY: 475 AN XY: 723986

Gnomad4 AFR exome AF: 0.0216

Gnomad4 AMR exome AF: 0.00174

Gnomad4 ASJ exome AF: 0.0000383

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.000104

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.000137

Gnomad4 OTH exome AF: 0.00209

GnomAD4 genome AF: 0.00524 AC: 799 AN: 152362 Hom.: 5 Cov.: 32 AF XY: 0.00509 AC XY: 379 AN XY: 74504

Gnomad4 AFR AF: 0.0176

Gnomad4 AMR AF: 0.00235

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.000414

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000220

Gnomad4 OTH AF: 0.00614

Alfa AF: 0.00186 Hom.: 0

Bravo AF: 0.00625

Asia WGS AF: 0.00318 AC: 11 AN: 3478

EpiCase AF: 0.000382

EpiControl AF: 0.000593

ClinVar

Significance: Likely benign

Submissions summary: Benign:5

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not provided Benign:3

Likely benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -
Likely benign, criteria provided, single submitter	clinical testing	GeneDx	Oct 10, 2023	See Variant Classification Assertion Criteria. -
Likely benign, criteria provided, single submitter	clinical testing	Athena Diagnostics	May 23, 2018	- -

Hereditary spastic paraplegia 48 Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Apr 13, 2018

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases allowed determination this variant is unlikely to cause disease. Therefore, this variant is classified as likely benign. -

Hereditary spastic paraplegia Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Genome Diagnostics Laboratory, The Hospital for Sick Children

Apr 01, 2021

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.76
CADD	Benign	2.7
DANN	Benign	0.70
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: rs146143723; hg19: chr7-4815346;