Roche and AstraZeneca-backed endocrine disease therapy developer Millendo will merge with publicly-listed OvaScience, raising a further $30m in the process.

The smart electric vehicle producer, whose largest investor is Tencent, was valued at $5bn as of late last year and has filed to go public in the US.

Boston Scientific, which paid $25m for a 25% stake in the venous stent developer two years ago, has agreed to buy the company in full.

Hakim Unique is the largest external shareholder for the Chinese vehicle-backed loan provider, which is set to float in the US.

Glaucoma therapy spinout Quethera will become a unit of drug manufacturer Astellas Pharma, providing exits to investors Cambridge Enterprise, UCEF III and UK2IS.

Best Buy, Panasonic, Intel, Polycom and Onkyo are all set to exit chipmaker Avnera, which had raised almost $77m in funding.

WPP and UTA are exiting digital media company Uproxx Media, which had raised some $42m in funding, in an acquisition by Warner Music Group.

The social media marketing platform is backed by HNA, Jinzi Ham and Tencent, and has reportedly raised almost $210m.

Alibaba spinoff Koubei could merge with another subsidiary, Ele.me, as SoftBank Vision Fund enters talks to lead a round of up to $5bn.

Less than four months after being launched by Imperial College, GraphicsFuzz has been acquired by Google and will be integrated into the Android Graphics Team.