chr16-49623720-C-T

Variant names:

• chr16-49623720-C-T
• rs933564
• NM_001379286.1:c.3601+2450G>A

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_001379286.1(ZNF423):​c.3601+2450G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.224 in 152,068 control chromosomes in the GnomAD database, including 4,333 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.22 (4333 hom., cov: 32)
• Consequence: ZNF423 NM_001379286.1 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.528
• Publications: 4 publications found

Genes affected

ZNF423 (HGNC:16762): (zinc finger protein 423) The protein encoded by this gene is a nuclear protein that belongs to the family of Kruppel-like C2H2 zinc finger proteins. It functions as a DNA-binding transcription factor by using distinct zinc fingers in different signaling pathways. Thus, it is thought that this gene may have multiple roles in signal transduction during development. Mutations in this gene are associated with nephronophthisis-14 and Joubert syndrome-19. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Oct 2012]

ZNF423 Gene-Disease associations (from GenCC):

• nephronophthisis 14

  Inheritance: AD, Unknown, AR Classification: STRONG, LIMITED Submitted by: Ambry Genetics, Laboratory for Molecular Medicine, Labcorp Genetics (formerly Invitae)
• Joubert syndrome with oculorenal defect

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• nephronophthisis 2

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• nephronophthisis

  Inheritance: AR Classification: LIMITED Submitted by: ClinGen

ACMG classification

Our verdict: Benign. The variant received -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.68).
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.335 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ZNF423	NM_001379286.1	c.3601+2450G>A		intron_variant	Intron 5 of 7	ENST00000563137.7	NP_001366215.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ZNF423	ENST00000563137.7	c.3601+2450G>A		intron_variant	Intron 5 of 7	5	NM_001379286.1	ENSP00000455588.3

Frequencies

GnomAD3 genomes AF: 0.224 AC: 34052 AN: 151948 Hom.: 4326 Cov.: 32

Gnomad AFR AF: 0.340

Gnomad AMI AF: 0.176

Gnomad AMR AF: 0.215

Gnomad ASJ AF: 0.176

Gnomad EAS AF: 0.161

Gnomad SAS AF: 0.156

Gnomad FIN AF: 0.177

Gnomad MID AF: 0.184

Gnomad NFE AF: 0.177

Gnomad OTH AF: 0.203

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.224 AC: 34103 AN: 152068 Hom.: 4333 Cov.: 32 AF XY: 0.221 AC XY: 16411 AN XY: 74352

African (AFR) AF: 0.340 AC: 14076 AN: 41438

American (AMR) AF: 0.215 AC: 3291 AN: 15274

Ashkenazi Jewish (ASJ) AF: 0.176 AC: 612 AN: 3472

East Asian (EAS) AF: 0.160 AC: 828 AN: 5162

South Asian (SAS) AF: 0.157 AC: 757 AN: 4824

European-Finnish (FIN) AF: 0.177 AC: 1878 AN: 10582

Middle Eastern (MID) AF: 0.201 AC: 59 AN: 294

European-Non Finnish (NFE) AF: 0.177 AC: 12016 AN: 68000

Other (OTH) AF: 0.202 AC: 426 AN: 2112

Alfa AF: 0.122 Hom.: 212

Bravo AF: 0.233

Asia WGS AF: 0.181 AC: 630 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.68
CADD	Benign	10
DANN	Benign	0.83
PhyloP100		0.53
Mutation Taster		=100/0	polymorphism (auto)

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: rs933564; hg19: chr16-49657631;