PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 12880980-4 2003 The cytotoxic retinoid 4-HPR achieved multi-log cell kills in neuroblastoma cell lines resistant to ATRA and 13-cis-RA, and a pediatric phase I trial has shown it to be well tolerated. Isotretinoin 109-118 haptoglobin-related protein Homo sapiens 25-28