. "The start date of the nonclinical trial or study.NCI" . "Intellectual Product"^^ . "CL433008"^^ . "Nonclinical Study Start Date"^^ . "C99157"^^ . "CDISC"^^ . "Study Start DateSYCDISC" . . . . "Nonclinical Study Start Date"^^ . "Nonclinical Study Start DatePTNCI" . "Study Start DatePTCDISCSEND-STSPRM" . "The date on which the protocol is signed by the study director. Also known as Study Initiation Date. (FDA)CDISC" . . "STSTDTCPTCDISCSEND-STSPRMCD" . .