SpectraScience has acquired the assets of Applied Materials-backed oncology diagnostics technology developer Oncoscope for an undisclosed sum.

Oracle has bought virtualisation software specialist Ravello Systems, which had raised $54m from backers including Qualcomm and SanDisk, for a reported $500m.

Gree, Digital Garage and Publicis have exited the Singapore-based messaging app developer, acquired by Google to help launch its regional office in the city-state.

Volvo Group Venture Capital is set to exit Lytx, in which it invested an undisclosed sum in 2013 as part of a strategic partnership.

Business Growth Fund exited packaging maker Plastique, in which it invested $7.2m, through an acquisition by a subsidiary of Esco Technologies.

YouTube has bought BandPage, an IDG-backed company that helps musicians sell tickets, merchandise and other products, for approximately $8m.

Tencent-backed relationship communication app Couple, which raised $4.2m in 2012, has been acquired by Life360 for an undisclosed sum.

The mobile game studio raised $14m from Link and Motivation and Globis in 2014 and is now looking to go public in its home country of Japan.

The gene therapy developer, backed by Roche Venture Fund, floated in the middle of its range after raising more than $80m in venture funding.

The company, backed by Novartis, Sanofi and Elan Science One, priced its initial public offering below its target range at $8 per share.