NM_021926.4:c.*228C>T

Variant names:

• chr11-44264626-G-A
• rs4755798
• NM_021926.4:c.*228C>T

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_Strong BP6_Very_Strong BA1

The NM_021926.4(ALX4):​c.*228C>T variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.248 in 589,360 control chromosomes in the GnomAD database, including 19,205 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

• Frequency:
  • Genomes: 𝑓 0.23 (4422 hom., cov: 34)
  • Exomes 𝑓: 0.25 (14783 hom.)
• Consequence: ALX4 NM_021926.4 3_prime_UTR
• Clinical Significance: Benign criteria provided, multiple submitters, no conflicts B:3
• Conservation: PhyloP100: -1.09
• Publications: 7 publications found

Genes affected

ALX4 (HGNC:450): (ALX homeobox 4) This gene encodes a paired-like homeodomain transcription factor expressed in the mesenchyme of developing bones, limbs, hair, teeth, and mammary tissue. Mutations in this gene cause parietal foramina 2 (PFM2); an autosomal dominant disease characterized by deficient ossification of the parietal bones. Mutations in this gene also cause a form of frontonasal dysplasia with alopecia and hypogonadism; suggesting a role for this gene in craniofacial development, mesenchymal-epithelial communication, and hair follicle development. Deletion of a segment of chromosome 11 containing this gene, del(11)(p11p12), causes Potocki-Shaffer syndrome (PSS); a syndrome characterized by craniofacial anomalies, cognitive disability, multiple exostoses, and genital abnormalities in males. In mouse, this gene has been shown to use dual translation initiation sites located 16 codons apart. [provided by RefSeq, Oct 2009]

ALX4 Gene-Disease associations (from GenCC):

• parietal foramina 2

  Inheritance: AD Classification: DEFINITIVE, STRONG, MODERATE Submitted by: G2P, Labcorp Genetics (formerly Invitae), Ambry Genetics
• frontonasal dysplasia with alopecia and genital anomaly

  Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE, SUPPORTIVE Submitted by: Ambry Genetics, G2P, Labcorp Genetics (formerly Invitae), Orphanet
• parietal foramina

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Benign. The variant received -20 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.76).
• BP6: Variant 11-44264626-G-A is Benign according to our data. Variant chr11-44264626-G-A is described in ClinVar as Benign. ClinVar VariationId is 304694.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BA1: GnomAd4 highest subpopulation (NFE) allele frequency at 95% confidence interval = 0.267 is higher than 0.05.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_021926.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ALX4	NM_021926.4	MANE Select	c.*228C>T		3_prime_UTR	Exon 4 of 4	NP_068745.2	Q9H161

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ALX4	ENST00000652299.1	MANE Select	c.*228C>T		3_prime_UTR	Exon 4 of 4	ENSP00000498217.1	Q9H161

Frequencies

GnomAD3 genomes AF: 0.235 AC: 35682 AN: 152128 Hom.: 4419 Cov.: 34

Gnomad AFR AF: 0.190

Gnomad AMI AF: 0.235

Gnomad AMR AF: 0.217

Gnomad ASJ AF: 0.359

Gnomad EAS AF: 0.127

Gnomad SAS AF: 0.235

Gnomad FIN AF: 0.213

Gnomad MID AF: 0.310

Gnomad NFE AF: 0.270

Gnomad OTH AF: 0.252

GnomAD4 exome AF: 0.252 AC: 110200 AN: 437114 Hom.: 14783 Cov.: 4 AF XY: 0.251 AC XY: 57283 AN XY: 228086

African (AFR) AF: 0.190 AC: 2340 AN: 12320

American (AMR) AF: 0.202 AC: 3527 AN: 17474

Ashkenazi Jewish (ASJ) AF: 0.366 AC: 4932 AN: 13472

East Asian (EAS) AF: 0.118 AC: 3583 AN: 30294

South Asian (SAS) AF: 0.239 AC: 9921 AN: 41476

European-Finnish (FIN) AF: 0.223 AC: 6516 AN: 29248

Middle Eastern (MID) AF: 0.283 AC: 540 AN: 1910

European-Non Finnish (NFE) AF: 0.272 AC: 72357 AN: 265572

Other (OTH) AF: 0.256 AC: 6484 AN: 25348

GnomAD4 genome AF: 0.234 AC: 35698 AN: 152246 Hom.: 4422 Cov.: 34 AF XY: 0.231 AC XY: 17198 AN XY: 74446

African (AFR) AF: 0.190 AC: 7902 AN: 41564

American (AMR) AF: 0.217 AC: 3318 AN: 15306

Ashkenazi Jewish (ASJ) AF: 0.359 AC: 1246 AN: 3472

East Asian (EAS) AF: 0.127 AC: 654 AN: 5166

South Asian (SAS) AF: 0.234 AC: 1127 AN: 4824

European-Finnish (FIN) AF: 0.213 AC: 2266 AN: 10620

Middle Eastern (MID) AF: 0.310 AC: 91 AN: 294

European-Non Finnish (NFE) AF: 0.270 AC: 18351 AN: 67974

Other (OTH) AF: 0.250 AC: 529 AN: 2114

Alfa AF: 0.248 Hom.: 634

Bravo AF: 0.233

Asia WGS AF: 0.190 AC: 660 AN: 3478

ClinVar

ClinVar submissions

Significance: Benign

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	-	2	not provided (2)
-	-	1	Parietal foramina 2 (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.76
CADD	Benign	0.41
DANN	Benign	0.84
PhyloP100		-1.1
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: rs4755798; hg19: chr11-44286176;