NM_001080517.3:c.3856delT

Variant names:

• chr3-9475617-CT-C
• rs587777329
• NM_001080517.3:c.3856delT

GermlineCancer (beta)

Variant summary

Our verdict is Uncertain significance.

+3 Uncertain · Warm

-7

-6

-1

0

+5

+6

+9

+10

BenignB

Likely BenignLB

UncertainVUS

Likely PathogenicLP

PathogenicP

The variant received 3 classification points (ACGS-UK Somatic Oncogenicity v2025). O3_SupportingO9_Moderate

The NM_001080517.3(SETD5):c.3856delT (p.Ser1286LeufsTer84) variant causes a frameshift change. This is a loss-of-function variant that does not trigger NMD. The gene SETD5 is a known oncogene (CancerMine: 2 oncogene, 2 driver citations). The gene SETD5 is a cancer driver gene (CancerMine: 2 oncogene, 2 driver citations). The variant allele was found at a cumulative frequency of 0.00000205 (AC=3) in the gnomAD database across 1,461,712 control chromosomes (no homozygotes observed). The grpmax filtering allele frequency (95% CI) is 0.0000116. Splicing prediction tools (SpliceAI) predict no significant impact on normal splicing. Variant has been reported in ClinVar as Pathogenic/Likely Pathogenic (★★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: SETD5 NM_001080517.3 frameshift
• Clinical Significance: Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:8
• Conservation: PhyloP100: 2.38
• Publications: 1 publications found

Genes affected

SETD5 (HGNC:25566): (SET domain containing 5) This function of this gene has yet to be determined but based on sequence similarity to other SET domain proteins it may function as a histone methyltransferase. Mutations in this gene have been associated with an autosomal dominant form of intellectual disability. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Jul 2017]

SETD5 Gene-Disease associations (from GenCC):

• intellectual disability-facial dysmorphism syndrome due to SETD5 haploinsufficiency

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: PanelApp Australia, Labcorp Genetics (formerly Invitae), G2P
• syndromic complex neurodevelopmental disorder

  Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen

Classification according to ACGS-UK Somatic Oncogenicity v2025

Classification was made for transcript:

Our verdict: Uncertain_significance. The variant received 3 points.

Apply	Criterion Code & Title / Strength	Strength	Rationale / Clinical Context
	O3Absent or very rare in population		Very rare in gnomAD (popmax AF <0.01%) — O3 supporting; GnomAD effective popmax AF = 0.000012 — very rare (O3 supporting [+1])
	O9Protein length change in non-repeat region		Truncating variant in final exon of oncogene — predicted GOF (O9 moderate); Truncating variant in final exon of oncogene — predicted to escape NMD and result in GOF

Variant Effect in Transcripts

Automated classification analysis was done for transcript: NM_001080517.3. You can select a different transcript below to see updated classification assignments.

RefSeq Transcripts

Sel.	Gene / Transcript	Tags	HGVSc / HGVSp	Effect	Exon rank	Protein / UniProt
	SETD5 NM_001080517.3	MANE Select	c.3856delT p.Ser1286LeufsTer84	frameshift	Exon 23 of 23	Prot: NP_001073986.1 UniProt:
	SETD5 NM_001437635.1		c.3970delT p.Ser1324LeufsTer84	frameshift	Exon 24 of 24	Prot: NP_001424564.1
	SETD5 NM_001437633.1		c.3952delT p.Ser1318LeufsTer84	frameshift	Exon 24 of 24	Prot: NP_001424562.1 UniProt:

SETD5 NM_001080517.3

MANE Select

HGVSc / HGVSpc.3856delTp.Ser1286LeufsTer84

Exon rankExon 23 of 23

frameshift

Prot: NP_001073986.1UniProt: Q9C0A6-1

SETD5 NM_001437635.1

HGVSc / HGVSpc.3970delTp.Ser1324LeufsTer84

Exon rankExon 24 of 24

frameshift

Prot: NP_001424564.1

SETD5 NM_001437633.1

HGVSc / HGVSpc.3952delTp.Ser1318LeufsTer84

Exon rankExon 24 of 24

frameshift

Prot: NP_001424562.1UniProt: A0A804HKJ9

Ensembl Transcripts

Sel.	Gene / Transcript	Tags	HGVSc / HGVSp	Effect	Exon rank	Protein / UniProt
	SETD5 ENST00000402198.7	TSL:5MANE Select	c.3856delT p.Ser1286LeufsTer84	frameshift	Exon 23 of 23	Prot: ENSP00000385852.2 UniProt:
	SETD5 ENST00000493918.5	TSL:1	n.4020delT	non_coding_transcript_exon	Exon 19 of 19	Prot:
	SETD5 ENST00000682536.1		c.3952delT p.Ser1318LeufsTer84	frameshift	Exon 24 of 24	Prot: ENSP00000507956.1 UniProt:

SETD5 ENST00000402198.7

TSL:5MANE Select

HGVSc / HGVSpc.3856delTp.Ser1286LeufsTer84

Exon rankExon 23 of 23

frameshift

Prot: ENSP00000385852.2UniProt: Q9C0A6-1

SETD5 ENST00000493918.5

TSL:1

HGVSc / HGVSpn.4020delT

Exon rankExon 19 of 19

non_coding_transcript_exon

Prot:

SETD5 ENST00000682536.1

HGVSc / HGVSpc.3952delTp.Ser1318LeufsTer84

Exon rankExon 24 of 24

frameshift

Prot: ENSP00000507956.1UniProt: A0A804HKJ9

Frequencies

Allele frequencies (AF), counts (AC/AN), homozygotes and coverage

Common (AF > 0.05 / Hom > 5)

Rare (AF ≤ 0.0001 / Hom ≤ 1)

Source / population	AF	AC	Hom	AN	Coverage
Global population databases 4 sources Large-scale international reference populations
GnomAD3 genomes	AF:	AC:	Hom:	AN:	Cov:32
GnomAD2 exomes	AF: 0.00000401	AC:1	Hom:	AN:249238	Cov:
GnomAD4 exome	AF: 0.00000205	AC:3	Hom:0	AN:1461712	Cov:31
GnomAD4 genome	AF:	AC:	Hom:	AN:	Cov:32

Showing 4 sources

ClinVar

ClinVar submissions

Significance: Pathogenic/Likely pathogenic

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
3	-	-	Intellectual disability-facial dysmorphism syndrome due to SETD5 haploinsufficiency (3)
3	-	-	not provided (3)
1	-	-	Inborn genetic diseases (1)
1	-	-	Intellectual disability, autosomal dominant 45 (1)

Computational Scores

Algorithm	Calibrated pred.	Score	Prediction
Mutation Taster	N/A	1/199	disease causing (ClinVar)
PhyloP100	Benign	2.4

Showing 2 of 2 scores

Splicing Scores

Algorithm	Calibrated pred.	Score	Prediction
SpliceAI score (max)	Benign	0.0	Details are displayed if max score is > 0.2

Showing 1 of 1 scores

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

MaveDB functional evidence

MaveDB is a public repository of laboratory assays that test the effect of thousands of variants at once — treat this as supporting research data and interpret it with great caution; it is not a clinical classification.

No MaveDB functional evidence found for this variant.

Other links and lift over

dbSNP: rs587777329;

hg19: chr3-9517301;

ACMG debug oncogenicity

ACGS debug oncogenicity

ACMG debug germline

Submit to ClinVar