By Bhanvi Satija and Marleen Kaesebier

LONDON/ZURICH, June 29 (Reuters) – Swiss pharma and diagnostics giant Roche on Monday ‌launched its long-awaited Axelios gene sequencer, in a bid ‌to challenge U.S. firm Illumina’s leadership in next-generation sequencing.

Roche’s launch is limited ​to academic and research-focused facilities and comes more than a decade after the group’s failed $6.8 billion hostile bid to acquire Illumina.

The Axelios platform is designed to rapidly read and analyse ‌DNA at scale, supporting ⁠applications from disease research to drug development.

Analysts say Roche’s entry is likely to be a ⁠gradual push for market share rather than a rapid disruption of the sector, which is valued at about $7.3 billion. Illumina remains ​the ​clear leader, with estimates putting ​its share of NGS systems ‌at around 70%.

Roche said it aims to place about 100 machines in the first year, a target that will lay the foundation for a future “blockbuster” franchise generating over 1 billion Swiss francs ($1.1 billion) in annual sales over the long ‌term.

The company has partnered with 10x ​Genomics and Google DeepVariant for data ​analysis, backed by ​early platform validation from Broad Clinical Labs and ‌the Hartwig Medical Foundation to ​ease adoption.

Roche said ​it has already begun commercial shipments and booked pre-orders. The launch is focused on U.S., UK, Germany, France, ​among others and ‌Roche expects to quickly expand into other geographies.

(Reporting by ​Bhanvi Satija in London and Marleen Kaesebier in ​Zurich, Editing by Louise Heavens)