Af­ter los­ing its high-pro­file rheuma­toid arthri­tis part­ner­ship just two years ear­li­er, Sanofi’s Bel­gium-based biotech Abl­ynx could once again put an Ab­b­Vie pact on the chop­ping block af­ter post­ing a Phase II flop this morn­ing.

Abl­ynx re­port­ed out bad news that vo­bar­il­izum­ab dis­ap­point­ed yet again, fail­ing to meet its pri­ma­ry end­points in a Phase II lu­pus study. It’s the same drug that fiz­zled in RA, which Ab­b­Vie punt­ed back in 2016.

The drug was the sub­ject of a glob­al li­cens­ing agree­ment inked with Ab­b­Vie back in 2013, which came with an up­front pay­ment of $175 mil­lion and mile­stones up to $665 mil­lion. The deal gave Ab­b­Vie the op­tion to li­cense vo­bar­il­izum­ab in RA and in lu­pus. It’s un­clear what Ab­b­Vie will choose, but the fu­ture isn’t look­ing good for vo­bar­il­izum­ab.

Robert Zeldin

“Ab­b­Vie will re­view the com­plete da­ta set when avail­able from the Phase II Steady SLE study to de­ter­mine whether to ex­er­cise its op­tion to li­cense vo­bar­il­izum­ab,” Abl­ynx said in a state­ment. “Should Ab­b­Vie ex­er­cise the op­tion, it would trig­ger a pay­ment to Abl­ynx. If the op­tion is not ex­er­cised, Abl­ynx’s agree­ment with Ab­b­Vie would ter­mi­nate.”

Abl­ynx, which has a nanobody plat­form tech and sev­er­al drugs in its pipeline, was snatched up by Sanofi for $4.8 bil­lion in Jan­u­ary. That was af­ter shoot­ing down two pre­vi­ous bids from No­vo Nordisk. The deal got Sanofi Abl­ynx’s lead drug capla­cizum­ab, which has shown con­sid­er­able promise in treat­ing the ul­tra-rare blood clot­ting dis­or­der ac­quired throm­bot­ic throm­bo­cy­topenic pur­pu­ra (aTTP).

Still, the vo­bar­il­izum­ab fail­ure will like­ly sting. The failed Phase II study en­rolled 312 pa­tients with lu­pus across five treat­ment arms. Ad­verse events that led to study drug dis­con­tin­u­a­tion were re­port­ed in 12.4% of all vo­bar­il­izum­ab treat­ed pa­tients com­pared to 6.5% in the place­bo group. Two deaths were re­port­ed in the vo­bar­il­izum­ab group.

“We are dis­ap­point­ed that vo­bar­il­izum­ab didn’t show a dose re­sponse in the analy­sis of the study’s pri­ma­ry end­point, how­ev­er, vo­bar­il­izum­ab was well tol­er­at­ed in all test­ed dose groups, con­firm­ing its fa­vor­able safe­ty pro­file,” said Abl­ynx CMO Robert Zeldin in a state­ment. “We will con­tin­ue to an­a­lyze the full da­ta set and thank the study par­tic­i­pants and their fam­i­lies as well as the in­ves­ti­ga­tors and staff who con­tributed to this study.”

Since losing a controversial court case over orphan drug exclusivity last year, the FDA’s Office of Orphan Products Development has remained entirely silent on orphan exclusivity for any product approved since last November, leaving many sponsors in limbo on what to expect.

That silence means that for more than 70 orphan-designated indications for more than 60 products, OOPD has issued no public determination on the seven-year orphan exclusivity in the Orange Book, and no new listings of orphan exclusivity appear in OOPD’s searchable database, as highlighted recently by George O’Brien, a partner in Mayer Brown’s Washington, DC office.

The Drugs for Neglected Diseases initiative (DNDi) and Sanofi today said that their potential sleeping sickness treatment saw success rates of up to 95% from a Phase II/III study investigating the safety and efficacy of single-dose acoziborole.

The potentially transformative treatment for sleeping sickness would mainly be targeted at African countries, according to data published today in The Lancet Infectious Diseases medical journal. The clinical trial was led by DNDi and its partners in the Democratic Republic of the Congo (DRC) and Guinea, with the authors noting: