Branaplam

Branaplam
Clinical data
Other names	LMI070; NVS-SM1
Identifiers
	IUPAC name (6E)-3-(1H-Pyrazol-4-yl)-6-[3-(2,2,6,6-tetramethylpiperidin-4-yl)oxy-1H-pyridazin-6-ylidene]cyclohexa-2,4-dien-1-one;
CAS Number	1562338-42-4;
PubChem CID	89971189;
ChemSpider	34980709;
UNII	P12R69543A;
Chemical and physical data
Formula	C22H27N5O2
Molar mass	393.491 g·mol−1
3D model (JSmol)	Interactive image;
	SMILES CC1(CC(CC(N1)(C)C)Oc2ccc(nn2)c3ccc(cc3O)c4c[nH]nc4)C;
	InChI InChI=1S/C22H27N5O2/c1-21(2)10-16(11-22(3,4)27-21)29-20-8-7-18(25-26-20)17-6-5-14(9-19(17)28)15-12-23-24-13-15/h5-9,12-13,16,25,27H,10-11H2,1-4H3,(H,23,24)/b18-17+; Key:YIFFDXMJVNKGBL-ISLYRVAYSA-N; ; InChI=1S/C22H27N5O2/c1-21(2)10-16(11-22(3,4)27-21)29-20-8-7-18(25-26-20)17-6-5-14(9-19(17)28)15-12-23-24-13-15/h5-9,12-13,16,27-28H,10-11H2,1-4H3,(H,23,24); Key:STWTUEAWRAIWJG-UHFFFAOYSA-N;

Branaplam (development codes LMI070 and NVS-SM1) is an experimental drug being developed by Novartis to treat spinal muscular atrophy (SMA). It is a pyridazine derivative that works by increasing the amount of functional survival of motor neuron protein produced by the SMN2 gene through modifying its splicing pattern.[1][2]

As of July 2019, branaplam is in a phase-II clinical trial in children with SMA type 1.[3][4][5]

Keto-enol tautomerism of branaplam

References

Palacino J, Swalley SE, Song C, Cheung AK, Shu L, Zhang X, et al. (July 2015). "SMN2 splice modulators enhance U1-pre-mRNA association and rescue SMA mice". Nature Chemical Biology. 11 (7): 511–7. doi:10.1038/nchembio.1837. PMID 26030728.
"LMI070". SMA News Today. Retrieved 2017-03-10.
"An Open Label Study of LMI070 in Type 1 Spinal Muscular Atrophy (SMA)". ClinicalTrials.gov. Retrieved 2017-03-10.
"Novartis Releases Update on LMI070 (Branaplam) Clinical Trial". CureSMA. 2017-09-20. Archived from the original on 2017-11-25. Retrieved 2017-10-07.
"| Novartis announced that enrollment for the ongoing clinical trial of branaplan is now closed". 20 May 2019. Retrieved 2019-07-12.

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