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Acceleron Pharma Inc.

Report additional results from SPECTRA Phase 2 trial

Delivered by the deadline

AI-confirmed · human review in progress Independent AI checks agreed on primary SEC or regulator evidence. Records are now being reviewed by hand, starting with those our customers order.

Announced
11 Jan 2021
Due
30 Jun 2021
Delivered
14 May 2021
  • Deadline
  • Met
  • Late
  • Not met
  • Today

What the company said

“Additional results from SPECTRA Phase 2 trial expected in 1H 2021”

What we found

Evidence strength A What the grades mean

The company presented additional interim results from the SPECTRA Phase 2 trial at the American Thoracic Society (ATS) 2021 International Conference, which took place in May 2021.

  • A
    Acceleron Pharma Inc. 8-K filed 2021-08-05 Regulatory filing · published 5 Aug 2021 · retrieved 24 Oct 2026 · kept permanently by the SEC · fingerprint a2e53af31a11
    “Updates from the PULSAR and SPECTRA Phase 2 trials of sotatercept in patients with pulmonary arterial hypertension (PAH) presented at the American Thoracic Society (ATS) 2021 International Conference” ✓ confirmed on the page
  • A
    Acceleron Pharma Inc. 10-Q filed 2021-08-05 Regulatory filing · published 5 Aug 2021 · retrieved 24 Oct 2026 · kept permanently by the SEC · fingerprint 479f39b98da8
    “we presented additional preliminary interim results at the ATS 2021 International Conference” ✓ confirmed on the page

Checked 24 Oct 2026.

Commitment DNA

The structured record of this commitment. Fields the company did not state are left blank rather than guessed.

Event type
Clinical readout
Indicative materiality
Medium rules
Action
Report
Deliverable
SPECTRA Phase 2 trial results
Language
Expected (“expects”, “plans”)
In the company’s control
High
Specificity
High

How this entry was checked

  1. Commitment recordedThe company's words were matched word for word against the filing.
  2. First checkAn AI model, Gemini (Google), read the company's later filings and recorded the outcome with a quoted passage.
  3. Second check: agreesA different AI model, Claude (Anthropic), re-read the evidence without being told the outcome and reached the same answer.

Confirmed. This outcome counts towards the company's Kept Score. How verification works

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