IFN-Kinoid (IFN-K) in lupus
IFN-K is the lead product now in a 178-patient Phase IIb targeting Systemic Lupus Erythematosus (SLE), the most common form of Lupus. Lupus is an autoimmune disease of the connective tissues of various organs. There is no cure at present.
The 178-patient Phase IIb (NCT02665364) started in September 2015. Five doses of IFN-Kinoid are given: 240µg on days 0, 7 and 28 then a booster shot of 120µg in week 12 and week 24. The co-primary endpoint at week 36 (about nine months) is a reduction in a 21-gene interferon signature (IS) profile determined by Neovacs, plus the change in the clinical BILAG-Based Composite Lupus Assessment (BICLA) score. Our 1 August note, Lupus signature, has details.
The trial patients will mostly be recruited in Europe, Russia and Latin America. The study was extended in April 2016 to include US patients under an FDA IND. The number of US patients may have increased from the 12 originally envisaged as the number of sites is, from November 2016, being increased from five to 15. The first US patient enrolled in the trial in November 2016.
As recruitment is still ongoing, it now seems more realistic that overall recruitment might complete in Q117 (formerly June 2016), implying that the trial might read out by late 2017, but this could easily slip into 2018; Neovacs management anticipates data by late 2017.
Neovacs’ Korean partner, CKD, may launch IFN-K in South Korea in H218. CKD paid €1m upfront in 2015, with a further €4m now anticipated in 2018 if the Phase IIb is successful. A Korean IND has been granted and five Korean centres are participating in the Phase IIb. The Korean system can allow conditional approval from 2018. Management expects that over 1,000 patients will be treated between 2018 and 2020.
Benlysta, a monoclonal antibody, is the only biological agent to be approved so far for SLE, in 2011. It reduces the production of autoantibodies. Benlysta sales have been hampered by a high price of around $35,000 per year, modest efficacy and a restrictive label. Worldwide sales for Benlysta in 2015 were £230m; growth was 25% over 2014. Of these sales, 90% were in the US.
Phase III data from Anthera on blisibimod show that it failed its clinical endpoint; another example of the problems is developing lupus therapies, although secondary endpoint biological markers showed statistically significant treatment effects. This leaves anifrolumab from AstraZeneca as the most immediate potential competitor (Exhibit 3). Anifrolumab is a monoclonal against the IFNα receptor. Anifrolumab will have Phase III data by late 2018, so could be marketed from 2020.
Exhibit 3: Ongoing efficacy studies for SLE* (Phase III)
Company |
Product |
Duration |
n |
Primary endpoint |
Data |
NCT ID |
AstraZeneca |
Anifrolumab |
52 wk |
450 |
SRI≥4, high and low dose) |
Sep-18 |
NCT02446912 |
52 wk |
360 |
SRI≥4 (single dose level) |
Oct-18 |
NCT02446899 |
Anthera |
Blisibimod |
52 wk |
442 |
SELENA-SLEDAI ≥10. |
Nov 2016, endpoint not met |
NCT01395745 |
52 wk |
350 |
SRI-6 |
Dec 2018 (under review) |
NCT02514967 |
ImmuPharma |
Rigerimod/IPP-201101 |
52 wk |
200 |
SRI≥4, |
Dec-17+ (first patient June 16) |
NCT02504645 |
Source: Edison Investment Research. Note: *Excludes studies for lupus nephritis, investigator-sponsored, Japanese bridging and open-label extensions.
Neovacs’ partner will need to fund and run at least two substantial Phase III studies, at least one in the US, to be competitive. It is now possible that any deal completion might be dependent on the result of the Anifrolumab studies as these will affect the IFN-K market potential; if the trial is clearly positive, AstraZeneca will have a period of at least two years to build its market.
The main market for lupus is the US with an Edison estimate of 159,000 prevalence cases. The main subsegment is African-American women with about 40,000 cases. In Europe, there may be 170,000 prevalence cases, but data are harder to get and more uncertain.
In Korea, various surveys indicate 9,000-11,000 treated patients with a prevalence of about 13,250. Neovacs management estimates 20,000 cases overall in the population. Treatment is in specialist centres so the market should develop quickly.
Further IFN-K indications
Potential further indications for kinoid technology are autoimmune diseases like dermatomyositis, an autoimmune skin condition with a prevalence of about 70,000 cases. There is no cure. Neovacs plans a 15-patient Phase I trial. This is now unlikely to start before 2017.
Neovacs is in preclinical development with Vascular Epithelial Growth Factor Kinoid (VEGF-K). VEGF stimulates the formation of new blood vessels in cancer growth and in wet acute macular degeneration (AMD).
The cancer market is dominated by Roche’s Avastin (bevacizumab) with 2015 sales of CHF6.68bn (US$6.9bn). Several biosimilar products are likely to launch over 2019-20. Trials here would be prolonged as overall survival will need to be demonstrated by comparison to established products,
In AMD, VEGF-K could find a ready market if it proves as effective as Lucentis (ranibizumab). This is sold in the EU by Novartis, US$2.06bn in 2015 and by Roche in the US, 2015 sales of CHF1.5bn ($1.6bn). Eylea (aflibercept, Regeneron) had sales of US$2.68bn in 2015 in the US and, through Bayer, €1.23bn (US$1.4bn), up 62%. Trial readout in AMD is much faster than in cancer, although long-term studies will be needed in Phase III. However, any AMD product is still many years form market and Lucentis biosimilar products will also change the market dynamics after the patents expire over 2020-22.