Assyro AI
US FDAUnited StatesALApproval Letter

Approval Letter Other (Nov 13, 2025)

Issued November 13, 2025

Issued

November 13, 2025

Application

Other

Review center

Other

Stage

Final Decision

Letter type

Approval Letter

Response due November 13, 2026Product may be marketed.

Summary

This is a Complete Response Letter from the FDA to Alkermes, Inc. regarding New Drug Application (NDA) 213378 for Lybalvi (olanzapine and samidorphan). The FDA has determined that the application cannot be approved in its present form due to objectionable conditions at a manufacturing facility, pending review of prescribing information, and outstanding clinical data requirements.

Key points

  • Satisfactorily resolve objectionable conditions identified at the Alkermes, Inc. manufacturing facility (FEI: 1000142940, Wilmington, OH, USA), including a preapproval inspection and adequate facility responses.
  • Review labeling review resources, including PLR Requirements for Prescribing Information and Pregnancy and Lactation Labeling Final Rule websites.
  • Use the Selected Requirements for Prescribing Information (SRPI) checklist to ensure Prescribing Information conforms with format items in regulations and guidances.
  • Include updated content of labeling in Structured Product Labeling (SPL) format in any resubmission.
  • Present a re-tabulation of the reasons for premature trial discontinuation by incorporating drop-outs from newly completed trials and describe any new trends or patterns identified.
  • Provide case report forms and narrative summaries for each patient who died during a clinical trial or who did not complete a trial because of an adverse event.
  • Provide narrative summaries for serious adverse events.
  • Describe any information that suggests a substantial change in the incidence of common, but less serious, adverse events between new data and original application data.

Cited reasons

  • Unresolved Objectionable Conditions at Manufacturing Facility
  • Labeling Review Reserved Pending Other Issues
  • Inadequate Clinical Trial Discontinuation Data
  • Missing Case Report Forms and Narrative Summaries for Deaths/SAEs
  • Inadequate Updated Clinical Exposure Information
  • Missing Summary of Worldwide Safety Experience
  • Missing English Translations of Foreign Labeling
  • The application cannot be approved in its present form due to unresolved objectionable conditions at the manufacturing facility, outstanding clinical data requirements related to safety and exposure, and pending labeling review. Satisfactory resolution of the manufacturing facility issues is a prerequisite for approval.

Recommended actions

  • Satisfactorily resolve objectionable conditions identified at the Alkermes, Inc. manufacturing facility (FEI: 1000142940, Wilmington, OH, USA), including a preapproval inspection and adequate facility responses.
  • Review labeling review resources, including PLR Requirements for Prescribing Information and Pregnancy and Lactation Labeling Final Rule websites.
  • Use the Selected Requirements for Prescribing Information (SRPI) checklist to ensure Prescribing Information conforms with format items in regulations and guidances.
  • Include updated content of labeling in Structured Product Labeling (SPL) format in any resubmission.
  • Present a re-tabulation of the reasons for premature trial discontinuation by incorporating drop-outs from newly completed trials and describe any new trends or patterns identified.
  • Provide case report forms and narrative summaries for each patient who died during a clinical trial or who did not complete a trial because of an adverse event.
  • Provide narrative summaries for serious adverse events.
  • Describe any information that suggests a substantial change in the incidence of common, but less serious, adverse events between new data and original application data.

Deficiency summary

The application cannot be approved in its present form due to unresolved objectionable conditions at the manufacturing facility, outstanding clinical data requirements related to safety and exposure, and pending labeling review. Satisfactory resolution of the manufacturing facility issues is a prerequisite for approval.

Findings

Unresolved Objectionable Conditions at Manufacturing Facility

Severity: critical

During a review of records requested under section 704(a)(4) of the Federal Food, Drug, and Cosmetic Act, and provided by Alkermes, Inc./FEI: 1000142940, Wilmington, OH, USA manufacturing facility, the FDA noted objectionable conditions. Satisfactory resolution of these objectionable conditions is required (e.g., preapproval inspection and adequate facility responses addressing these conditions) before this application may be approved.

Recommended response: Address all objectionable conditions identified during the facility inspection and provide an adequate response, potentially requiring a re-inspection and demonstrating compliance with cGMP.

Cited: section 704(a)(4) of the Federal Food, Drug, and Cosmetic Act

Labeling Review Reserved Pending Other Issues

Severity: minor

The agency reserves comment on the proposed labeling until the application is otherwise adequate. The sponsor is encouraged to review PLR Requirements for Prescribing Information, Pregnancy and Lactation Labeling Final Rule, and the Selected Requirements for Prescribing Information (SRPI). Any revised labeling must conform to format items in regulations and guidances, and the response must include updated content of labeling [21 CFR 314.50(l)(1)(i)] in structured product labeling (SPL) format.

Recommended response: Revise labeling according to PLR requirements, Pregnancy and Lactation Labeling Final Rule, and SRPI checklist, and submit updated content in SPL format once other deficiencies are resolved.

Cited: 21 CFR 314.50(l)(1)(i)

Inadequate Clinical Trial Discontinuation Data

Severity: major

Present a re-tabulation of the reasons for premature trial discontinuation by incorporating the drop-outs from the newly completed trials. Describe any new trends or patterns identified.

Recommended response: Re-tabulate and analyze reasons for premature trial discontinuation, including new trial data, and identify any new trends or patterns.

Missing Case Report Forms and Narrative Summaries for Deaths/SAEs

Severity: major

Provide case report forms and narrative summaries for each patient who died during a clinical trial or who did not complete a trial because of an adverse event. In addition, provide narrative summaries for serious adverse events.

Recommended response: Submit all requested case report forms and narrative summaries for patient deaths and serious adverse events to allow for a complete safety evaluation.

Inadequate Updated Clinical Exposure Information

Severity: major

Provide updated exposure information for the clinical studies/trials (e.g., number of subjects, person time).

Recommended response: Provide comprehensive updated exposure information for all clinical studies, including subject numbers and person-time data, to support safety and efficacy assessments.

Missing Summary of Worldwide Safety Experience

Severity: major

Provide a summary of worldwide experience on the safety of this drug. Include an updated estimate of use for drug marketed in other countries.

Recommended response: Compile and submit a summary of worldwide safety experience, including usage estimates from other countries where the drug is marketed, to provide a global safety profile.

Missing English Translations of Foreign Labeling

Severity: minor

Provide English translations of current approved foreign labeling not previously submitted.

Recommended response: Submit English translations of all current approved foreign labeling that has not yet been provided for review.

Regulatory context

Submission stage
final decision
Regulatory pathway
NDA 505(b)(2)

Impact

Impact score
0.95
Estimated delay
547 days
Estimated rework cost
$0
Subsequent action
resubmission

Strategic insights

The application received a Complete Response primarily due to critical manufacturing facility issues requiring satisfactory resolution, coupled with significant deficiencies in clinical safety data reporting and analysis, and pending labeling review. These issues collectively prevent approval at this time.

Regulatory change impact: Pending sponsor mitigation plan

Approval likelihood after response: 5%

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