chr8-144106919-C-T

Variant names:

• chr8-144106919-C-T
• rs755776322
• NM_032272.5:c.705C>T

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM2 BP4_Strong BP7

The NM_032272.5(MAF1):​c.705C>T​(p.Ser235Ser) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000394 in 1,522,714 control chromosomes in the GnomAD database, with no homozygous occurrence. 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 0.000020 (0 hom., cov: 33)
  • Exomes 𝑓: 0.000042 (0 hom.)
• Consequence: MAF1 NM_032272.5 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.175
• Publications: 0 publications found

Genes affected

MAF1 (HGNC:24966): (MAF1 homolog, negative regulator of RNA polymerase III) This gene encodes a protein that is similar to Maf1, a Saccharomyces cerevisiae protein highly conserved in eukaryotic cells. Yeast Maf1 is a negative effector of RNA polymerase III (Pol III). It responds to changes in the cellular environment and represses pol III transcription. Biochemical studies identified the initiation factor TFIIIB as a target for Maf1-dependent repression. [provided by RefSeq, Jul 2008]

SHARPIN (HGNC:25321): (SHANK associated RH domain interactor) Enables polyubiquitin modification-dependent protein binding activity. Involved in protein linear polyubiquitination and regulation of signal transduction. Located in cytosol. Part of LUBAC complex. [provided by Alliance of Genome Resources, Apr 2022]

SHARPIN Gene-Disease associations (from GenCC):

• autoinflammation with episodic fever and immune dysregulation

  Inheritance: AR Classification: LIMITED Submitted by: Ambry Genetics

ACMG classification

Our verdict: Likely_benign. The variant received -3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.84).
• BP7: Synonymous conserved (PhyloP=-0.175 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_032272.5. 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
	MAF1	NM_032272.5	MANE Select	c.705C>T	p.Ser235Ser	synonymous	Exon 7 of 8	NP_115648.2	Q9H063

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MAF1	ENST00000322428.10	TSL:1 MANE Select	c.705C>T	p.Ser235Ser	synonymous	Exon 7 of 8	ENSP00000318604.5	Q9H063
	MAF1	ENST00000876672.1		c.795C>T	p.Ser265Ser	synonymous	Exon 6 of 7	ENSP00000546731.1
	MAF1	ENST00000534585.5	TSL:5	c.795C>T	p.Ser265Ser	synonymous	Exon 6 of 7	ENSP00000433979.1	E9PSH4

Frequencies

GnomAD3 genomes AF: 0.0000197 AC: 3 AN: 152164 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.0000241

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000294

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.0000190 AC: 3 AN: 157968 AF XY: 0.0000240

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000407

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000416 AC: 57 AN: 1370550 Hom.: 0 Cov.: 51 AF XY: 0.0000297 AC XY: 20 AN XY: 673358

African (AFR) AF: 0.00 AC: 0 AN: 30366

American (AMR) AF: 0.00 AC: 0 AN: 29966

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 20436

East Asian (EAS) AF: 0.00 AC: 0 AN: 38114

South Asian (SAS) AF: 0.00 AC: 0 AN: 71162

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 48576

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5356

European-Non Finnish (NFE) AF: 0.0000533 AC: 57 AN: 1070082

Other (OTH) AF: 0.00 AC: 0 AN: 56492

GnomAD4 genome AF: 0.0000197 AC: 3 AN: 152164 Hom.: 0 Cov.: 33 AF XY: 0.0000135 AC XY: 1 AN XY: 74324

African (AFR) AF: 0.0000241 AC: 1 AN: 41434

American (AMR) AF: 0.00 AC: 0 AN: 15258

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5194

South Asian (SAS) AF: 0.00 AC: 0 AN: 4832

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10622

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000294 AC: 2 AN: 68036

Other (OTH) AF: 0.00 AC: 0 AN: 2088

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.0000151

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.84
CADD	Benign	0.64
DANN	Benign	0.55
PhyloP100		-0.17
PromoterAI		0.035	Neutral
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: rs755776322; hg19: chr8-145161822; COSMIC: COSV105181328; COSMIC: COSV105181328;