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The PML gene is fused to the retinoic acid receptor alpha ( RAR alpha ) gene in t(15;17) acute promyelocytic leukemia ( APL ), creating a PML-RAR alpha fusion oncoprotein .
 PML gene, retinoic acid receptor alpha, RAR alpha, PML-RAR, PML-RAR alpha fusion oncoprotein, retinoic acid receptor alpha ( RAR alpha ) gene
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 PML gene, retinoic acid receptor alpha, RAR alpha, PML-RAR, PML-RAR alpha fusion oncoprotein, retinoic acid receptor alpha ( RAR alpha ) gene