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YORVIPATH — FDA Complete Response Letter (NDA 216490)

Issued to Ascendis Pharma Bone Diseases A/S. Application reviewed but not approved; deficiencies must be corrected.

Application

NDA 505b1 • 216490

Product

YORVIPATH

Company

Ascendis Pharma Bone Diseases A/S

Review center

Other

Stage

Final Decision

Response due

December 31, 2024

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What did FDA decide for YORVIPATH?

Source facts and Assyro context are separated so you can scan the action quickly without treating analysis as an FDA conclusion.

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Source facts

FDA's complete response letter contains source-text evidence related to Labeling, packaging, and proprietary name, Chemistry, manufacturing, and controls, Clinical efficacy and substantial evidence, Safety and adverse events. Theme counts identify where the letter discusses a topic; they do not replace review of the exact redacted letter.

Key details in this letter

  • 1Labeling, packaging, and proprietary name: 25 source-text matches.
  • 2Chemistry, manufacturing, and controls: 17 source-text matches.
  • 3Clinical efficacy and substantial evidence: 1 source-text match.
  • 4Safety and adverse events: 1 source-text match.
Labeling, packaging, and proprietary nameChemistry, manufacturing, and controlsClinical efficacy and substantial evidenceSafety and adverse eventsDevice constituent and human factors

Suggested next step

Review the exact redacted FDA letter and address each stated deficiency before resubmission.

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Built from structured FDA metadata and deterministic source-text signals. Topic matches are navigation aids, not legal or regulatory conclusions. Verify material decisions against the original FDA document.

FDAPDFUpdated Jul 30, 2026

FDA source document

Read the full FDA complete response letter (PDF)

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Common questions about the YORVIPATH complete response letter

What does this complete response letter mean for YORVIPATH?

Application reviewed but not approved; deficiencies must be corrected. Requires resubmission addressing deficiencies. FDA issued this letter to Ascendis Pharma Bone Diseases A/S on April 28, 2023.

What is NDA 216490?

NDA 216490 is the application under which FDA issued this complete response letter for YORVIPATH to Ascendis Pharma Bone Diseases A/S. It was reviewed by FDA Other. The letter is dated April 28, 2023.

What happens after an FDA complete response letter?

FDA will not approve the application in its present form. The sponsor can resubmit after addressing every deficiency listed in the letter — which starts a Class 1 (two-month) or Class 2 (six-month) resubmission review clock — withdraw the application, or request an opportunity for a hearing.