2873
Since 1985 the combination of chlorambucil ( 10 mg daily , initially for six weeks , then alternating fortnights for 12 weeks ) and interferon - alpha 2b ( Schering - Plough ; 2 x 10 ( 6 ) U / m2 three times weekly by subcutaneous injection for 18 weeks ) has been compared in a randomised trial with chlorambucil alone in previously untreated patients with stage III or IV follicular lymphoma .
 GENE: interferon - alpha 2b
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 GENE: interferon - alpha 2b