16-71537324-G-A

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 2P and 6B. PM2 BP4_Strong BP6_Moderate

The NM_001166395.2(CHST4):c.647G>A(p.Arg216His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000446 in 1,614,180 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R216L) has been classified as Uncertain significance.

• Frequency:
  • Genomes: 𝑓 0.000092 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000040 (0 hom.)
• Consequence: CHST4 NM_001166395.2 missense
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: -0.109

Genes affected

CHST4 (HGNC:1972): (carbohydrate sulfotransferase 4) This gene encodes an N-acetylglucosamine 6-O sulfotransferase. The encoded enzyme transfers sulfate from 3'phosphoadenosine 5'phospho-sulfate to the 6-hydroxyl group of N-acetylglucosamine on glycoproteins. This protein is localized to the Golgi and is involved in the modification of glycan structures on ligands of the lymphocyte homing receptor L-selectin. Alternate splicing in the 5' UTR results in multiple transcript variants that encode the same protein. [provided by RefSeq, Oct 2009]

ZNF19 (HGNC:12981): (zinc finger protein 19) The protein encoded by this gene contains a zinc finger, a nucleic acid-binding domain present in many transcription factors. This gene is located in a region next to ZNF23, a gene also encoding a zinc finger protein, on chromosome 16. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Likely_benign. Variant got -4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.030914158).
• BP6: Variant 16-71537324-G-A is Benign according to our data. Variant chr16-71537324-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 3144744.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CHST4	NM_001166395.2	c.647G>A	p.Arg216His	missense_variant	2/2	ENST00000539698.4
CHST4	NM_005769.2	c.647G>A	p.Arg216His	missense_variant	2/2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CHST4	ENST00000539698.4	c.647G>A	p.Arg216His	missense_variant	2/2	1	NM_001166395.2	P1

Frequencies

GnomAD3 genomes AF: 0.0000920 AC: 14 AN: 152186 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.000314

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.000193

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD3 exomes AF: 0.0000597 AC: 15 AN: 251062 Hom.: 0 AF XY: 0.0000442 AC XY: 6 AN XY: 135706

Gnomad AFR exome AF: 0.000554

Gnomad AMR exome AF: 0.0000868

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000265

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000397 AC: 58 AN: 1461876 Hom.: 0 Cov.: 31 AF XY: 0.0000454 AC XY: 33 AN XY: 727240

Gnomad4 AFR exome AF: 0.000299

Gnomad4 AMR exome AF: 0.0000671

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000116

Gnomad4 FIN exome AF: 0.0000187

Gnomad4 NFE exome AF: 0.0000369

Gnomad4 OTH exome AF: 0.0000331

GnomAD4 genome AF: 0.0000919 AC: 14 AN: 152304 Hom.: 0 Cov.: 32 AF XY: 0.0000537 AC XY: 4 AN XY: 74476

Gnomad4 AFR AF: 0.000313

Gnomad4 AMR AF: 0.00

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.000193

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.00

Gnomad4 OTH AF: 0.00

Alfa AF: 0.0000763 Hom.: 0

Bravo AF: 0.0000869

ESP6500AA AF: 0.000455 AC: 2

ESP6500EA AF: 0.00 AC: 0

ExAC AF: 0.0000494 AC: 6

EpiCase AF: 0.00

EpiControl AF: 0.000119

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Dec 07, 2023

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.062
BayesDel_addAF	Benign	-0.46	T
BayesDel_noAF	Benign	-0.55
Cadd	Benign	0.11
Dann	Benign	0.84
DEOGEN2	Benign	0.31	T;T
Eigen	Benign	-1.4
Eigen_PC	Benign	-1.3
FATHMM_MKL	Benign	0.022	N
M_CAP	Benign	0.0088	T
MetaRNN	Benign	0.031	T;T
MetaSVM	Benign	-0.95	T
MutationAssessor	Benign	-0.73	N;N
MutationTaster	Benign	1.0	N;N;N
PrimateAI	Benign	0.20	T
PROVEAN	Benign	-1.0	N;N
REVEL	Benign	0.17
Sift	Benign	0.84	T;T
Sift4G	Benign	0.65	T;T
Polyphen		0.0070	B;B
Vest4		0.037
MVP		0.39
MPC		0.24
ClinPred		0.0095	T
GERP RS		-3.7
Varity_R		0.019
gMVP		0.19

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

LitVar

Other links and lift over

dbSNP: rs373562710; hg19: chr16-71571227;