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deep-research-dux4

Deep research: DUX4/FRG2 transcription regulation in PHRs

Metadata

Statusdone
Assignedagent-451
Agent identity3184716484e6f0ea08bb13539daf07686ee79d440505f1fdf2de0357707034c3
Created2026-04-02T03:35:45.800534466+00:00
Started2026-04-02T03:36:47.137594591+00:00
Completed2026-04-02T03:42:30.441296785+00:00
Tagsresearch,deep,fan-out, eval-scheduled
Eval score0.89
└ blocking impact0.95
└ completeness0.95
└ coordination overhead0.92
└ correctness0.92
└ downstream usability0.85
└ efficiency0.90
└ intent fidelity0.94
└ style adherence0.88

Description

Goal

Deep literature research on the DUX4/FRG2/FRG2B transcription factor family enriched in PHRs — 54 copies, 928-fold enrichment (strongest signal in copy-aware analysis).

Questions

  1. DUX4 biology: What does DUX4 do? What are its target genes? It's known to cause FSHD when de-repressed — but what is its normal function? Is it normally expressed (germline, early embryo)?
  2. FRG2 and FRG2B: What are these genes? FSHD Region Gene 2 — are they protein-coding? What do they encode? Are they functional or pseudogene-like?
  3. D4Z4 macrosatellite context: DUX4 sits within D4Z4 repeats. Each D4Z4 unit contains a DUX4 copy. Normal individuals have 11-100 D4Z4 repeats on chr4q; FSHD patients have <10. How does this relate to the 18 copies we see across 18 q-arms?
  4. Multi-chromosome D4Z4: D4Z4 is known on chr4q and chr10q. Our data shows DUX4 on 18 q-arms. Is this known? Does the literature recognize D4Z4-like sequences on other chromosomes?
  5. Copy number and disease: Is DUX4 copy number across chromosomes studied? Does inter-chromosomal D4Z4 variation affect FSHD severity or other conditions?
  6. Transcription regulation enrichment: Our copy-aware analysis found 'regulation of transcription, DNA-templated' as the strongest enrichment (928x). Is DUX4 classified under this GO term? What about FRG2?
  7. Connection to PHR communities: DUX4/FRG2 are in community C1 (D4Z4 sharing). Does the FSHD literature discuss subtelomeric exchange as a mechanism for D4Z4 spreading?

Output

Log detailed research summary. Save as deep_research_dux4_frg2.md.

Validation

  • FSHD biology is accurately described
  • D4Z4 repeat structure is explained
  • Multi-chromosome distribution is addressed with evidence
  • Connection to our 18-arm, 54-copy finding is discussed

Depends on

Required by

Log