Navigant (NYSE: NCI) has acquired a unit of investment bank Leerink Holdings LLC's practice.

The bank, through Leerink Swann Consulting LLC, is selling the life sciences practice. Terms of the deal were not disclosed.

Chicago-based Navigant is an expert services firm that specializes in disputes, investigations, financial advisory services and management consulting. Leerink's life sciences unit will be added to Navigant Healthcare, a unit of Navigant, that works with clients in the payer, provider and life sciences space.

Leerink, headquartered in Boston, is a health care-focused investment bank that was founded by Jeffrey Leerink (pictured). 

Investment banks, in addition to becoming more specialized, have also been recently driving M&A. In March, Houlihan Lokey Inc. agreed to buy ArchPoint Partnersto expand its technology business. In February, the heads of CBIZ Inc.'s (NYSE: CBZ) investment banking practice bought the company's M&A group and opened their own boutique M&A advisory firm, De Nes Partners LLC.