NM_001253852.3:c.618-13G>T

Variant names:

• chr1-113900413-C-A
• rs3789613
• NM_001253852.3:c.618-13G>T

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_001253852.3(AP4B1):​c.618-13G>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as (no stars).

• Frequency: Genomes: not found (cov: 32)
• Consequence: AP4B1 NM_001253852.3 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.0520
• Publications: 16 publications found

Genes affected

AP4B1 (HGNC:572): (adaptor related protein complex 4 subunit beta 1) This gene encodes a subunit of a heterotetrameric adapter-like complex 4 that is involved in targeting proteins from the trans-Golgi network to the endosomal-lysosomal system. Mutations in this gene are associated with cerebral palsy spastic quadriplegic type 5 (CPSQ5) disorder. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Dec 2011]

AP4B1-AS1 (HGNC:44114): (AP4B1 antisense RNA 1)

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.79).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001253852.3. 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
	AP4B1	NM_001253852.3	MANE Select	c.618-13G>T		intron	N/A	NP_001240781.1
	AP4B1-AS1	NR_037864.1		n.910C>A		non_coding_transcript_exon	Exon 5 of 5
	AP4B1-AS1	NR_125965.1		n.1078C>A		non_coding_transcript_exon	Exon 5 of 5

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	AP4B1	ENST00000369569.6	TSL:1 MANE Select	c.618-13G>T		intron	N/A	ENSP00000358582.1
	AP4B1	ENST00000256658.8	TSL:1	c.618-13G>T		intron	N/A	ENSP00000256658.4
	AP4B1-AS1	ENST00000419536.1	TSL:2	n.910C>A		non_coding_transcript_exon	Exon 5 of 5

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 39

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 1589

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.79
CADD	Benign	2.5
DANN	Benign	0.67
PhyloP100		0.052

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: rs3789613; hg19: chr1-114443035;