The stability of factor IX concentrate during storage

Area of Science:

• Hematology
• Biopharmaceutical Stability
• Quality Control

Background:

• Factor IX concentrate is a critical therapeutic agent for hemophilia B.
• Assessing the long-term stability of factor IX concentrate is essential for ensuring patient safety and treatment efficacy.
• Previous studies have indicated potential degradation pathways for blood products during storage.

Purpose of the Study:

• To evaluate the long-term storage stability of factor IX concentrate.
• To determine if storage conditions affect critical quality attributes of the concentrate.
• To establish an appropriate shelf-life for factor IX concentrate stored at refrigerated temperatures.

Main Methods:

• A storage study was conducted on 35 randomly selected batches of factor IX concentrate manufactured between 1976 and 1980.
• Quality attributes including vacuum stability, dissolution time, Factor IX (F IX) procoagulant activity, normalized activated partial thromboplastin time (NAPTT), and thrombin generation were measured.
• Measurements were taken immediately after manufacturing and compared with analyses of spare samples performed in 1981.

Main Results:

• No significant changes were observed in vacuum stability, dissolution time, F IX procoagulant activity, NAPTT, or thrombin generation over a storage period of up to 5 years.
• The data indicate consistent performance and quality of the factor IX concentrate under cold room temperature storage.
• Statistical analysis confirmed the absence of significant degradation or loss of activity.

Conclusions:

• Factor IX concentrate demonstrates excellent stability when stored at +4 degrees C for up to 5 years.
• The findings support the established storage recommendations for factor IX concentrate.
• This study provides robust evidence for the reliable shelf-life of factor IX concentrate under recommended conditions.