Neladalkib, also known as NVL-655, and NUV-655, is a selective, brain-penetrant ALK inhibitor with antitumor activity against the lorlatinib-resistant G1202R/L1196M compound mutation. NUV-655 (NVL-655) inhibited the kinase activity of ALK and ALK G1202R/L1196M with Kiapp < 5 nM in the presence of 1 mM ATP and with selectivity over TRKB. Across a panel of 335 wild-type kinases, NUV-655 (NVL-655) inhibited only 5 other kinases by >50% within 10-fold of its IC50 for ALK. NUV-655 (NVL-655) also selectively inhibited ALK in cells. It inhibited the growth of Ba/F3 cells driven by expression of EML4-ALK variant 1 (v1) with either wild-type kinase domain or drug-resistance mutations G1202R, G1202R/L1196M, or G1202R/G1269A at IC50 values < 10 nM and with selectivity over TRKB. In vivo, NUV-655 (NVL-655) induced regression at well-tolerated doses in a Ba/F3 EML4-ALKv1 G1202R/L1196M xenograft model. Furthermore, NUV-655 (NVL-655) demonstrated brain penetrance in rodent pharmacokinetic studies.

Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to 24 months.
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20°C. Generally, these will be useable for up to one month. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.