3-132601200-T-C

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2 PP2

The NM_016557.4(ACKR4):c.803T>C(p.Ile268Thr) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 29)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: ACKR4 NM_016557.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.93

Genes affected

ACKR4 (HGNC:1611): (atypical chemokine receptor 4) The protein encoded by this gene is a member of the G protein-coupled receptor family, and is a receptor for C-C type chemokines. This receptor has been shown to bind dendritic cell- and T cell-activated chemokines including CCL19/ELC, CCL21/SLC, and CCL25/TECK. A pseudogene of this gene is found on chromosome 6. Alternatively spliced transcript variants encoding the same protein have been described. [provided by RefSeq, Jul 2013]

ACAD11 (HGNC:30211): (acyl-CoA dehydrogenase family member 11) This gene encodes an acyl-CoA dehydrogenase enzyme with a preference for carbon chain lengths between 20 and 26. Naturally occurring read-through transcription occurs between the upstream gene NPHP3 (nephronophthisis 3 (adolescent)) and this gene. [provided by RefSeq, Aug 2015]

NPHP3-ACAD11 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant where missense usually causes diseases, ACKR4

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ACKR4	NM_016557.4	c.803T>C	p.Ile268Thr	missense_variant	2/2	ENST00000249887.3
ACAD11	NM_032169.5	c.1621+2029A>G		intron_variant		ENST00000264990.11
NPHP3-ACAD11	NR_037804.1	n.5623+2029A>G		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ACKR4	ENST00000249887.3	c.803T>C	p.Ile268Thr	missense_variant	2/2	1	NM_016557.4	P1
ACAD11	ENST00000264990.11	c.1621+2029A>G		intron_variant		1	NM_032169.5	P1

Frequencies

GnomAD3 genomes Cov.: 29

GnomAD4 exome Data not reliable, filtered out with message: AS_VQSR AF: 6.84e-7 AC: 1 AN: 1461632 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 727128

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: 0.0000116

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 29

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

Aug 13, 2021

The c.803T>C (p.I268T) alteration is located in exon 1 (coding exon 1) of the ACKR4 gene. This alteration results from a T to C substitution at nucleotide position 803, causing the isoleucine (I) at amino acid position 268 to be replaced by a threonine (T). 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	Uncertain	0.39
BayesDel_addAF	Pathogenic	0.29	D
BayesDel_noAF	Pathogenic	0.18
Cadd	Uncertain	26
Dann	Uncertain	1.0
DEOGEN2	Benign	0.053	T
Eigen	Uncertain	0.54
Eigen_PC	Uncertain	0.58
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.90	D
M_CAP	Benign	0.056	D
MetaRNN	Uncertain	0.70	D
MetaSVM	Benign	-0.37	T
MutationAssessor	Benign	1.3	L
MutationTaster	Benign	1.0	D;D;D;D
PrimateAI	Uncertain	0.69	T
PROVEAN	Benign	-0.90	N
REVEL	Uncertain	0.50
Sift	Benign	0.21	T
Sift4G	Uncertain	0.058	T
Polyphen		0.98	D
Vest4		0.84
MutPred		0.48		Loss of stability (P = 0.0094);
MVP		0.80
ClinPred		0.96	D
GERP RS		5.4
Varity_R		0.15
gMVP		0.37

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: chr3-132320044;