# NM_004960.4(FUS):c.1531dup (p.Met511fs)

https://sugi.bio/variant/fus-p-met511fs

## Summary

**FUS p.Met511fs (c.1531dup)** is classified **Pathogenic** in FUS (ClinVar, Single submitter, 1 submitter; last evaluated 2023-03-07). No gnomAD frequency available for this variant; Associated with amyotrophic lateral sclerosis type 6.

**At a glance:** Pathogenic · review: Single submitter · rsID rs2544279594 · 1 submitter · 2 linked conditions · no gnomAD frequency available for this variant

## For patients & families {#patients}

This is a change in the FUS gene that is reported as disease-causing, but on limited review, submitted by 1 submitter, and is linked to amyotrophic lateral sclerosis type 6.

*Reference information, not medical advice, and not a prediction for any individual. A genetic counselor or clinician can interpret what it means for you and your family.*

|  |  |
| --- | --- |
| Typical inheritance (of this condition) | Autosomal dominant |
| Age of onset (of this condition) | Adult |
| Diagnostic panels | FUS is a diagnostic-grade gene on 3 Genomics England panels |

**Commonly reported features of Frontotemporal dementia with motor neuron disease** (across patients with this condition; presentation varies — frequencies from Orphanet):

- Abnormal lower motor neuron morphology — Very frequent (99-80%)
- Abnormal upper motor neuron morphology — Very frequent (99-80%)
- Frontotemporal dementia — Very frequent (99-80%)
- Atypical behavior — Frequent (79-30%)
- Depression — Frequent (79-30%)
- Hallucinations — Frequent (79-30%)
- Apathy — Frequent (79-30%)
- Dysarthria — Frequent (79-30%)

**Support & next steps:** [Condition overview & support (NIH GARD)](https://rarediseases.info.nih.gov/diseases/0009874/index) · [Find a genetic counselor (NSGC)](https://findageneticcounselor.nsgc.org/).

## Identity {#identity}

| Field | Value |
| --- | --- |
| Gene | [FUS](https://sugi.bio/atlas/gene/FUS/) |
| Protein change (HGVS p.) | p.Met511fs |
| Coding change (HGVS c.) | c.1531dup |
| MANE Select transcript | [NM_004960](https://www.ncbi.nlm.nih.gov/nuccore/NM_004960) |
| dbSNP | [rs2544279594](https://www.ncbi.nlm.nih.gov/snp/rs2544279594/) |
| Variant type | Duplication |
| Location | chr16:31191099-31191100 (GRCh38) |
| ClinVar | [VCV2945054](https://www.ncbi.nlm.nih.gov/clinvar/variation/2945054/) |

**All HGVS expressions:** `LRG_655:g.15969dup`, `LRG_655t1:c.1531dup`, `NC_000016.10:g.31191100dup`, `NC_000016.9:g.31202421dup`, `NG_012889.2:g.15969dup`, `NM_001170634.1:c.1528dup`, `NM_001170937.1:c.1519dup`, `NM_004960.4:c.1531dup`, `NR_028388.2:n.1601dup`

## Computational & population evidence {#evidence}

**Concordance:** 1 independent predictor **concordant** with the ClinVar classification.

- **Missense predictors (AlphaMissense/REVEL/SaProt) do not apply** to this variant type — they score amino-acid substitutions only. For non-missense variants the computational signal comes from conservation (below), not from a missing predictor score.
- Conservation: phyloP 8.569, GERP 1.09, phastCons 1 — highly conserved position (PP3-type support)
- Molecular consequence: **frameshift** — a predicted loss-of-function variant. the gene is **loss-of-function-intolerant** (LOEUF 0.104, pLI 1), supporting a loss-of-function disease mechanism. *Descriptive; not an applied PVS1 code.*
- Nonsense-mediated decay: the premature termination codon is **within the last 50 nt of the penultimate exon (14 of 15, 11 nt from its 3' end)** — predicted to **escape NMD**, so the truncated protein is likely expressed. An input to PVS1, not an applied code.
- SpliceAI: **not assessed** — the release is built from a substitutions-only source, so it holds no duplication variants. That is a property of the dataset, not of the variant, and is not evidence against a splicing effect.
- Population frequency: **no gnomAD frequency available for this variant** — rarity (ACMG PM2) and BA1/BS1 cannot be assessed for this variant.

*Computational predictors are not independent (ClinGen Variant Classification guidance): AlphaMissense (Cheng et al. 2023) carries the ACMG weight for missense and conservation (phyloP/GERP/phastCons) for non-missense; REVEL (Pejaver-2022 calibrated strength bands) and SaProt (Su et al. 2023, structure-aware, ClinVar-independent protein language model, raw LLR) are shown as orthogonal agreement signals, not additive. For frequency, the gnomAD v4.1 grpmax filtering allele frequency (FAF95) is ClinGen's designated BA1/BS1 input (gnomAD v4 guidance v3.0, June 2025); BA1/BS1 thresholds are disease-specific, not a blanket 5%. Predictions, not a clinical determination.*

## Gene constraint & dosage {#gene-context}

**FUS** population constraint: LOEUF 0.104, pLI 1, missense-Z 2.8346. *Lower LOEUF and higher pLI indicate a gene that tolerates loss-of-function poorly; ClinGen dosage is the curated haploinsufficiency call.*

Curated gene–disease validity (ClinGen):

- **amyotrophic lateral sclerosis type 6** — Definitive (AD)

## Protein context {#protein}

Residue **511** lies in the 'disordered' region.

AlphaFold model confidence (whole protein): pLDDT 54.96, 9% of residues very-high.

**23 experimental structure(s)** (PDB): [2LA6](https://www.rcsb.org/structure/2LA6), [2LCW](https://www.rcsb.org/structure/2LCW), [4FDD](https://www.rcsb.org/structure/4FDD), [4FQ3](https://www.rcsb.org/structure/4FQ3), [5W3N](https://www.rcsb.org/structure/5W3N), [5XRR](https://www.rcsb.org/structure/5XRR).

## What this gene does {#gene-function}

*Describes the biological roles of FUS (the gene this variant disrupts) — not effects measured for this specific variant. A damaging variant is expected to affect these functions and pathways; the degree depends on the variant.*

**How this variant is thought to act:** FUS's established molecular role includes chromatin binding. p.Met511fs falls in the disordered region. In Reactome, FUS is annotated in disease pathway(s) including **Dengue Virus-Host Interactions**.

**Disease mechanism (Reactome):** FUS loss or alteration is curated in [Dengue Virus-Host Interactions](https://reactome.org/content/detail/R-HSA-9918481).

### Pathways affected {#pathways}

FUS participates in **4 Reactome pathways** (⚕ = disease pathway):

| Pathway (Reactome) | Evidence |
| --- | --- |
| ⚕ [Dengue Virus-Host Interactions](https://reactome.org/content/detail/R-HSA-9918481) | curated |
| [Processing of Capped Intron-Containing Pre-mRNA](https://reactome.org/content/detail/R-HSA-72203) | curated |
| [mRNA Polyadenylation](https://reactome.org/content/detail/R-HSA-9770562) | curated |
| [mRNA Splicing - Major Pathway](https://reactome.org/content/detail/R-HSA-72163) | curated |

### Molecular function & processes (GO — experimentally supported) {#go}

**Molecular function:** chromatin binding, transcription coactivator activity, RNA binding, identical protein binding, molecular condensate scaffold activity.

**Biological process:** regulation of DNA-templated transcription, regulation of transcription by RNA polymerase II, RNA splicing, regulation of RNA splicing, mRNA stabilization, protein homooligomerization.

## Clinical significance {#significance}

**Pathogenic** — review status Single submitter *(criteria provided, single submitter)*, last evaluated 2023-03-07.

**Submitter consensus:** unanimous (1/1 Pathogenic).

### Submitter classifications {#submitters}

| Submitter | Classification | Review | Method | Date |
| --- | --- | --- | --- | --- |
| Labcorp Genetics (formerly Invitae), Labcorp | Pathogenic | criteria provided, single submitter | clinical testing | 2023-03-07 |

## Associated conditions {#conditions}

[amyotrophic lateral sclerosis type 6](https://sugi.bio/atlas/disease/amyotrophic-lateral-sclerosis-type-6/), [tremor, hereditary essential, 4](https://sugi.bio/atlas/disease/tremor-hereditary-essential-4/).

**Reported phenotype names (ClinVar):** Amyotrophic lateral sclerosis type 6, Tremor, hereditary essential, 4, FUS-Related Amyotrophic Laterial Sclerosis, AMYOTROPHIC LATERAL SCLEROSIS 6 WITHOUT FRONTOTEMPORAL DEMENTIA, Amyotrophic lateral sclerosis 6, with or without frontotemporal dementia.

## Similar variants {#similar}

Related FUS variant pages (same residue, condition, or type): [FUS p.Gly247_Arg248insGly](/variant/fus-p-gly247-arg248insgly), [FUS p.Gly458_Pro459insGly](/variant/fus-p-gly458-pro459insgly), [FUS c.524-13dup](/variant/fus-c-524-minus-13dup), [FUS p.Gly465fs](/variant/fus-p-gly465fs), [FUS p.Gly500fs](/variant/fus-p-gly500fs), [FUS p.Gly501fs](/variant/fus-p-gly501fs), [FUS p.Gly220_Ser221insArgGlyGly](/variant/fus-p-gly220-ser221insargglygly), [FUS p.Gly250_Arg251insGlyArgGlyGly](/variant/fus-p-gly250-arg251insglyargglygly).

### Data sources & attribution {#sources}

ClinVar (NCBI — public domain, built 2026-10-14); gnomAD v4.1 (Broad Institute, built 2026-10-06); AlphaMissense (Cheng et al. 2023, © Google DeepMind — CC BY 4.0, built 2026-01-27); REVEL (Ioannidis et al. 2016 — ODbL, built 2026-07-13); SaProt (Su et al. 2023 — MIT, built 2026-10-14); SpliceAI (Illumina — free for non-commercial use, built 2026-10-13); CADD (Rentzsch et al. 2019, University of Washington — free for non-commercial use, built 2026-10-10); Conservation (phyloP/phastCons/GERP) (UCSC hg38 470-way mammal (Hiller Lab) + Ensembl Compara, built 2026-07-12); gnomAD Non-coding Constraint (Gnocchi) (Chen et al. 2024, Broad Institute — CC0, built 2026-10-11); gnomAD Regional Missense Constraint (Broad Institute — CC0, built 2026-10-13); Pangolin (Zeng & Li 2022 — CC BY 4.0, built 2026-10-11); Repeat regions (UCSC — RepeatMasker, TRF, segmental duplications, built 2026-10-11); ClinGen (ClinGen, built 2026-09-22); UniProt (CC BY 4.0); Reactome / GO (CC BY 4.0, built 2026-09-23); MaveDB (per-record license, built 2026-10-11); CIViC (CC0, built 2026-09-22); Orphanet (Orphanet, built 2026-06-12)

*Primary record: NCBI ClinVar (variation 2945054). Classifications reflect these databases as of the page's build date and may change. Free reference use — not medical advice; consult the primary submitters and a clinician.*