1522
This study indicates that the phenotype of myofibrillar disarray seen in HCM patients which harbor either of these two mutations may not be directly due to the failure of the mutant myosin heavy chain protein to assemble and form normal sarcomeres , but may rather be a secondary effect possibly resulting from the chronic stress of decreased beta MHC function .
 GENE: mutant myosin heavy chain protein; GENE: beta MHC
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: mutant myosin heavy chain protein; GENE: beta MHC