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

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.

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.

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.

E-commerce marketplace Linio had raised $230m from investors including Tengelmann, Access Industries and Rocket Internet.

Cisco has agreed to buy Duo Security, an Alphabet and Workday-backed user authentication platform that was valued at $1.7bn as of October.

Cybersecurity software provider Solebit has been acquired for about $88m after raising $13m from investors including MassMutual Ventures.