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 Malariology Antimalarial drugs and drug resistant parasites
Novel Novartis malaria compound shows potential to be effective against infections resistant to all currently available antimalarial drugs

On September 21, 2016, Novartis published proof of concept study results in theNew England Journal of Medicineshowing that its new antimalarial compound, KAF156, demonstrated activity against both vivax and falciparum malaria, including artemisinin-resistant parasites.

Malaria is a life-threatening disease primarily caused by parasites (Plasmodium falciparum and Plasmodium vivax) transmitted to people through the bites of infected Anopheles mosquitos. Each year, it kills nearly half a million people, most of whom are children[1]. Artemisinin-based combination therapies (ACTs), such as Coartem, are currently the standard of care against falciparum infections. Yet, rising resistance to artemisinin and decreasing partner drug efficacy in Southeast Asia threatens the global control of Plasmodium falciparum malaria. This is why new drugs are needed.

Results published in the New England Journal of Medicine demonstrate that KAF156 shows activity against blood and liver stages of malaria parasites, including artemisinin-resistant parasites. KAF156, currently in phase IIb, is the first compound from a novel class of antimalarials known as imidazolopiperazines.

Antimalarials with new mechanisms of action are urgently needed to tackle emerging parasite resistance to current therapies; Novartis leads two of the four most advanced malaria development programs under way worldwide

"KAF156 is a potential game-changing therapy against malaria," said Thierry Diagana, Head of the Novartis Institute for Tropical Diseases (NITD). "It acts against the two main parasites responsible for the majority of malaria deaths and against the blood and liver stages of the parasite's lifecycle. Novartis leads two of the four most advanced malaria development programs worldwide. If the programs are successful, they could help address the emerging issue of multidrug resistance."

KAF156 is the first compound from a novel class of drugs called imidazolopiperazines whose mechanism of action is still being characterized, but may be related to a previously uncharacterized gene (Plasmodium falciparumcyclic amine resistance locus, Pfcarl). In line with WHO guidance that antimalarials be co-formulated to mitigate the risk of parasite resistance development, it is expected that KAF156 will become part of a combination regimen when used to treat malaria.

From March to August 2013, a phase II, open-label, two part study was conducted in five centers in Thailand and Vietnam to assess KAF156 in adult patients with acute uncomplicated P.vivax(11 patients) orP.falciparium(10 patients) malaria. Multiple dose (400 mg o­nce daily for 3 days) cohorts assessing parasite clearance rates were followed by a single dose cohort infalciparum malaria (800 mg) assessing 28 day cure rates (22 patients). Researchers saw that KAF156 resolves signs and symptoms of illness and cleared parasitemia rapidly in both vivax and falciparum malaria patients, including infections with artemisinin-resistant parasites.

"We are currently losing the battle against resistance in the Great Mekong Sub-region. In the past resistance has spread from this region and caused millions of deaths in Africa and India. The discovery and development of new safe and effective antimalarial drugs which are unrelated to those we currently use and do not share their resistance mechanisms, is essential if we are to curb this threat, and to control and ultimately eliminate malaria," said Professor Nick White, from the Mahidol-Oxford Tropical Medicine Research Unit (MORU), Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand.

Teams working as part of a joint research program with the Novartis Institute for Tropical Diseases, the Genomics Institute of the Novartis Research Foundation, and the Swiss Tropical and Public Health Institute, discovered KAF156.  Research was supported by the Wellcome Trust, the Singapore Economic Development Board, and Medicines for Malaria Venture (MMV). Novartis will lead the development of KAF156 with scientific and financial support from MMV (in collaboration with the Bill & Melinda Gates Foundation).

The research and development of KAF156 is part of a broader commitment by Novartis in the fight against malaria. The Novartis Malaria Initiative drives research, development and access to novel treatments as part of this effort. Operated by Sandoz, the Novartis generics and biosimilars division, the Novartis Malaria Initiative is o­ne of the pharmaceuticals industry's largest access-to-medicine programs. Since 2001, the initiative has delivered more than 800 million treatments without profit, including over 300 million dispersible pediatric treatments, mostly to the public sector of malaria-endemic countries. For more information visit www.malaria.novartis.com

Disclaimer

The foregoing release contains forward-looking statements that can be identified by words such as "potential," "could," "may," "expected," "will," "commitment," or similar terms, or by express or implied discussions regarding potential marketing approvals for KAF156, or regarding potential future revenues from KAF156. You should not place undue reliance o­n these statements. Such forward-looking statements are based o­n the current beliefs and expectations of management regarding future events, and are subject to significant known and unknown risks and uncertainties. Should o­ne or more of these risks or uncertainties materialize, or should underlying assumptions prove incorrect, actual results may vary materially from those set forth in the forward-looking statements. There can be no guarantee that KAF156 will be submitted or approved for sale in any market, or at any particular time. Nor can there be any guarantee that KAF156 will be commercially successful in the future. In particular, management's expectations regarding KAF156 could be affected by, among other things, the uncertainties inherent in research and development, including unexpected clinical trial results and additional analysis of existing clinical data; unexpected regulatory actions or delays or government regulation generally; the company's ability to obtain or maintain proprietary intellectual property protection; general economic and industry conditions; global trends toward health care cost containment, including o­ngoing pricing pressures; unexpected safety, quality or manufacturing issues, and other risks and factors referred to in Novartis AG's current Form 20-F o­n file with the US Securities and Exchange Commission. Novartis is providing the information in this press release as of this date and does not undertake any obligation to update any forward-looking statements contained in this press release as a result of new information, future events or otherwise.

About Novarti

Novartis provides innovative healthcare solutions that address the evolving needs of patients and societies. Headquartered in Basel, Switzerland, Novartis offers a diversified portfolio to best meet these needs: innovative medicines, eye care and cost-saving generic pharmaceuticals. Novartis is the o­nly global company with leading positions in these areas. In 2015, the Group achieved net sales of USD 49.4 billion, while R&D throughout the Group amounted to approximately USD 8.9 billion (USD 8.7 billion excluding impairment and amortization charges). Novartis Group companies employ approximately 118,000 full-time-equivalent associates. Novartis products are available in more than 180 countries around the world. For more information, please visit http://www.novartis.com.

 

09/23/2016
(Source: www.novartis.com)  

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