GSK is returning to China for another antibody-drug conjugate deal, and it’s tapping into a company that already has alliances with
BioNTech
, Adcendo and
others
.
The UK pharma is allying itself with Duality Biologics in a deal worth $30 million upfront and up to $975 million in biobucks. That gets GSK access to a preclinical-stage ADC for an undisclosed gastrointestinal cancer target, the companies
said
Tuesday evening.
DualityBio, a five-year-old Shanghai and Suzhou biotech,
filed to go public
on the Hong Kong Stock Exchange in August. At the time, it said its partnerships had more than $4 billion in total deal value. That potential has now eclipsed $5 billion thanks to the collaboration with GSK.
GSK went to China for two ADC deals in the fall of 2023, both of them with Hansoh Pharma. The deals centered around
HS-20093
, which
nabbed
an FDA breakthrough therapy tag in relapsed or refractory extensive-stage small-cell lung cancer this summer, and
HS-20089
, a B7-H4-targeted ADC.
With DualityBio, GSK gets the exclusive worldwide option to DB-1324, save for mainland China, Hong Kong and Macau.
GSK already makes the ADC Blenrep, which has had a
checkered history
. The drugmaker also has multiple additional experimental candidates in various stages of clinical testing.
It’s one of dozens of drugmakers developing ADCs, with nearly every large pharma inking licensing deals or acquisitions in the space in the past few years. The most recent was Gilead, which earlier this week forged an up to
$415 million deal
for a solid tumor ADC out of Munich-based Tubulis. Multiple deals have involved biotechs based in China, including
Avenzo Therapeutics and Shanghai-based VelaVigo
last month.
“Given the unique ability of ADCs to address certain targets on tumour cells while sparing healthy ones,” GSK’s global head of oncology R&D Hesham Abdullah said in a statement, “we are confident in our strategic focus on this modality as it could advance new therapeutic treatments for the most challenging tumour types.”
Editor’s note: This story was updated to correct which ADC got the breakthrough therapy designation.