7-4787750-G-A

Variant names:

• chr7-4787750-G-A
• rs1554258349
• NM_014855.3:c.1428G>A

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 2P and 7B. PM2 BP4_Strong BP6_Moderate BP7

The NM_014855.3(AP5Z1):​c.1428G>A​(p.Leu476Leu) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000648 in 1,542,866 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

• Frequency:
  • Genomes: 𝑓 0.0000066 (0 hom., cov: 32)
  • Exomes 𝑓: 0.0000065 (0 hom.)
• Consequence: AP5Z1 NM_014855.3 synonymous
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 1.81
• Publications: 0 publications found

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]

AP5Z1 Gene-Disease associations (from GenCC):

• hereditary spastic paraplegia

  Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
• hereditary spastic paraplegia 48

  Inheritance: AR Classification: STRONG, MODERATE, SUPPORTIVE Submitted by: Genomics England PanelApp, Ambry Genetics, Labcorp Genetics (formerly Invitae), Orphanet

ACMG classification

Our verdict: Likely_benign. The variant received -5 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.64).
• BP6: Variant 7-4787750-G-A is Benign according to our data. Variant chr7-4787750-G-A is described in ClinVar as Likely_benign. ClinVar VariationId is 538865.Status of the report is criteria_provided_single_submitter, 1 stars.
• BP7: Synonymous conserved (PhyloP=1.81 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_014855.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	AP5Z1	NM_014855.3	MANE Select	c.1428G>A	p.Leu476Leu	synonymous	Exon 11 of 17	NP_055670.1
	AP5Z1	NM_001364858.1		c.960G>A	p.Leu320Leu	synonymous	Exon 10 of 16	NP_001351787.1
	AP5Z1	NR_157345.1		n.1559G>A		non_coding_transcript_exon	Exon 11 of 17

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	AP5Z1	ENST00000649063.2	MANE Select	c.1428G>A	p.Leu476Leu	synonymous	Exon 11 of 17	ENSP00000497815.1
	AP5Z1	ENST00000650581.1		c.228G>A	p.Leu76Leu	synonymous	Exon 2 of 7	ENSP00000497156.1
	AP5Z1	ENST00000477454.1	TSL:4	n.209G>A		non_coding_transcript_exon	Exon 2 of 4

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152094 Hom.: 0 Cov.: 32

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: 0.0000147

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 0.00000647 AC: 9 AN: 1390772 Hom.: 0 Cov.: 31 AF XY: 0.00000437 AC XY: 3 AN XY: 686572

African (AFR) AF: 0.00 AC: 0 AN: 31716

American (AMR) AF: 0.00 AC: 0 AN: 36234

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25152

East Asian (EAS) AF: 0.00 AC: 0 AN: 35922

South Asian (SAS) AF: 0.00 AC: 0 AN: 79294

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 39546

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5048

European-Non Finnish (NFE) AF: 0.00000833 AC: 9 AN: 1079872

Other (OTH) AF: 0.00 AC: 0 AN: 57988

GnomAD4 genome AF: 0.00000657 AC: 1 AN: 152094 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 74286

African (AFR) AF: 0.00 AC: 0 AN: 41414

American (AMR) AF: 0.00 AC: 0 AN: 15284

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5162

South Asian (SAS) AF: 0.00 AC: 0 AN: 4828

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10618

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000147 AC: 1 AN: 68000

Other (OTH) AF: 0.00 AC: 0 AN: 2088

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

Hereditary spastic paraplegia 48 Benign:1

Sep 23, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.64
CADD	Benign	1.9
DANN	Benign	0.69
PhyloP100		1.8

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

Other links and lift over

dbSNP: rs1554258349; hg19: chr7-4827381;