Eir Partners has acquired a controlling interest in QuartzBio, according to a news release.

QuartzBio, founded in 2012 and based in Frederick, Maryland, is a life science technology company that provides connected sample and biomarker intelligence for clinical-stage biopharma.

Eir, founded in 2015 and based in Miami, is a middle market private equity firm focused on healthcare technology and tech-enabled services. Eir’s targeted stages of investment include growth equity through control buyouts and investment sizes ranging from $25 million to $125 million.

Terms of the transaction were not disclosed.