The SAR analysis revealed that an aspartyl residue at the S 2 position was superior for inhibitory efficacy compared to succinyl and glutamyl moieties
However, significant or sustained increases require medical evaluation to rule out hepatitis or other liver disease
Additionally, degraded products may pose safety concerns
In 1993, the first small-molecule ligands, L-692,429 and its superior derivative, L-163,191 (MK-0677), were developed, further accelerating research in this field (Table 1) (Smith et al., 1993
Collectively, these novel therapeutic venues for the treatment of melanoma have improved overall survival
Shots may be reviewed when a patient wants more direct delivery or when the treatment goal involves localized recovery