Volastra Therapeutics signed an 18,120-square-foot sublease in the Alexandria Center for Life Science at 430 East 29th Street, owned by Alexandria Real Estate Equities, according to CBRE. “Volastra’s decision to establish its operations at the Alexandria Center for Life Science is a testament to the company’s momentum and long-term vision,” CBRE’s Joe DeRosa, who negotiated on behalf of the subtenant, said in a statement. “This transaction provides Volastra with best-in-class laboratory infrastructure in a premier location and supports the company’s next stage of scientific and corporate growth.” Alexandria is seeing an uptick in leasing momentum across its portfolio. Much like with this sublease, a significant portion of that has been in backfilling recently vacated space.