NM_005360.5:c.915C>T

Variant names:

• chr16-79598988-G-A
• rs864309692
• NM_005360.5:c.915C>T

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 3P and 2B. PM2 PP5 BP4 BP7

The NM_005360.5(MAF):​c.915C>T​(p.Cys305Cys) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (no stars).

• Frequency: Genomes: not found (cov: 29)
• Consequence: MAF NM_005360.5 synonymous
• Clinical Significance: Likely pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 2.61
• Publications: 2 publications found

Genes affected

MAF (HGNC:6776): (MAF bZIP transcription factor) The protein encoded by this gene is a DNA-binding, leucine zipper-containing transcription factor that acts as a homodimer or as a heterodimer. Depending on the binding site and binding partner, the encoded protein can be a transcriptional activator or repressor. This protein plays a role in the regulation of several cellular processes, including embryonic lens fiber cell development, increased T-cell susceptibility to apoptosis, and chondrocyte terminal differentiation. Defects in this gene are a cause of juvenile-onset pulverulent cataract as well as congenital cerulean cataract 4 (CCA4). Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jan 2010]

MAF Gene-Disease associations (from GenCC):

• Ayme-Gripp syndrome

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, G2P
• cataract 21 multiple types

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: G2P, Ambry Genetics
• cataract - microcornea syndrome

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• cerulean cataract

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• pulverulent cataract

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• Fine-Lubinsky syndrome

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 16-79598988-G-A is Pathogenic according to our data. Variant chr16-79598988-G-A is described in ClinVar as Likely_pathogenic. ClinVar VariationId is 217341.Status of the report is no_assertion_criteria_provided, 0 stars.
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.55). . Strength limited to SUPPORTING due to the PP5.
• BP7: Synonymous conserved (PhyloP=2.61 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_005360.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MAF	NM_005360.5	MANE Select	c.915C>T	p.Cys305Cys	synonymous	Exon 1 of 2	NP_005351.2
	MAF	NM_001031804.3		c.915C>T	p.Cys305Cys	synonymous	Exon 1 of 1	NP_001026974.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MAF	ENST00000326043.5	TSL:1 MANE Select	c.915C>T	p.Cys305Cys	synonymous	Exon 1 of 2	ENSP00000327048.4
	MAF	ENST00000569649.1	TSL:5	c.915C>T	p.Cys305Cys	synonymous	Exon 1 of 2	ENSP00000455097.1
	MAF	ENST00000393350.1	TSL:6	c.915C>T	p.Cys305Cys	synonymous	Exon 1 of 1	ENSP00000377019.1

Frequencies

GnomAD3 genomes Cov.: 29

GnomAD4 exome Cov.: 36

GnomAD4 genome Cov.: 29

ClinVar

ClinVar submissions as Germline

Significance: Likely pathogenic

Revision: no assertion criteria provided

Pathogenic	VUS	Benign	Condition
1	-	-	Developmental cataract (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.55
CADD	Benign	15
DANN	Benign	0.96
PhyloP100		2.6

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: rs864309692; hg19: chr16-79632885;