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Biogen10-K: Quality issue

FDA rejects high-dose SPINRAZA application due to manufacturing and control (CMC) issues.

Read at SEC EDGAR

What happened

In September 2025, the FDA issued a Complete Response Letter (CRL) for a higher dose of SPINRAZA, citing deficiencies in the Chemistry Manufacturing and Controls (CMC) module.

Source

SEC EDGARFeb 6, 2026

Annual report (Form 10-K)

Biogen 10-K for FY2025

Filing excerpt

In September 2025 the FDA issued a CRL for the supplemental NDA for a higher dose regimen of nusinersen for the treatment of SMA.

sec.gov/Archives/edgar/data/875045/000087504526000013/biib-20251231.htmRead the full source

Other signals in this filing (11)

Extracted by Autobound

From the Signal API record
Signal
10-K: Quality issue

What this signalsFilings often name leadership changes, deals and spending plans.

Period
FY2025
Fiscal year end
12/31
Filed
Feb 6, 2026

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The full record

From the Signal API record

Details

CIK
875045
Accession number
0000875045-26-000013
Timeframe
Current year
Filing year
2026
Why it matters
Quality management needed
Signal category
Operations

Topics and mentions

Regions named

  • North America

Extraction

Confidence
High
Relevance
85%
Sentiment
Negative
Detected
Feb 10, 2026
signal_type
sec-10k
signal_subtype
qualityIssue

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The API returns more than this page shows

This page shows a preview. The full sec-10k record in the Signal API and MCP can also have these 8 fields. Some fields are empty for some signals.

Company

  • linkedin_urlValue in the API
  • industriesValue in the API
  • employee_count_lowValue in the API
  • employee_count_highValue in the API
  • revenueValue in the API
  • descriptionValue in the API

Signal

  • signal_nameValue in the API
  • associationValue in the API
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Show the full JSONThe record on this page and the API request

GET /v1/signals/d00c6a04-4b34-4617-b739-03ce118942ca returns this record as JSON. POST /v1/companies/enrich returns every signal for biogen.com.

{
  "signal_id": "d00c6a04-4b34-4617-b739-03ce118942ca",
  "signal_type": "sec-10k",
  "signal_subtype": "qualityIssue",
  "detected_at": "2026-02-10T07:50:47.777+00:00",
  "company": {
    "name": "Biogen",
    "domain": "biogen.com"
  },
  "data": {
    "detail": "In September 2025, the FDA issued a Complete Response Letter (CRL) for a higher dose of SPINRAZA, citing deficiencies in the Chemistry Manufacturing and Controls (CMC) module. This regulatory setback creates an urgent need to address technical and quality information issues to meet the new PDUFA action date of April 3, 2026.",
    "metrics": {
      "timeframe": "current_year"
    },
    "summary": "FDA rejects high-dose SPINRAZA application due to manufacturing and control (CMC) issues.",
    "excerpts": "In September 2025 the FDA issued a CRL for the supplemental NDA for a higher dose regimen of nusinersen for the treatment of SMA.",
    "relevance": 0.85,
    "sentiment": "negative",
    "confidence": "high",
    "source_url": "https://www.sec.gov/Archives/edgar/data/875045/000087504526000013/biib-20251231.htm",
    "filing_date": "2026-02-06",
    "filing_year": 2026,
    "fiscal_year_end": "12/31",
    "sales_relevance": "Quality management needed",
    "signal_category": "operations",
    "regions_mentioned": [
      "North America"
    ]
  }
}

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