Antibody drug conjugate (ADC) purification

The invention provides methods for obtaining compositions having antibody drug conjugates (ADCs) with specified drug to antibody ratios (DARs). Included in the invention is a method for purifying an ADC mixture having ADCs with a drug loaded species of 6 or more by contacting the mixture with a hydr...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	BECKER CALVIN LAWRENCE, LEANNA MARVIN ROBERT
Format:	Patent
Sprache:	eng
Schlagworte:	HUMAN NECESSITIES HYGIENE MEDICAL OR VETERINARY SCIENCE PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS ORMEDICINAL PREPARATIONS
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Beschreibung
Zusammenfassung:	The invention provides methods for obtaining compositions having antibody drug conjugates (ADCs) with specified drug to antibody ratios (DARs). Included in the invention is a method for purifying an ADC mixture having ADCs with a drug loaded species of 6 or more by contacting the mixture with a hydrophobic resin such that a composition comprising less than 15% of the 6 or more drug loaded species is obtained. The invention also provides a composition wherein 70% or more of the ADCs present have a drug loaded species of 4 or less, wherein the ADC comprises an anti-EGFR antibody and an auristatin.