Mersana Therapeutics, the Healthcare sector company, was revisited by a Wall Street analyst today. Analyst Charles Zhu from LifeSci Capital maintained a Buy rating on the stock and has a $50.00 price target.
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Charles Zhu has given his Buy rating due to a combination of factors related to Mersana Therapeutics’ potential in the high unmet need area of post-topo triple-negative breast cancer (TNBC). The company is actively developing Emi-Le, a B7-H4 antibody-drug conjugate (ADC), which is expected to show promising clinical data by the end of 2025. Despite some investor skepticism rooted in past experiences with ADC platforms and management, Zhu believes that the therapeutic window for Emi-Le in post-topo TNBC dose expansion patients could be actionable.
Furthermore, discussions with key opinion leaders in onconephrology and medical oncology have bolstered confidence in Mersana’s approach, particularly regarding the management of proteinuria, which has been identified as a laboratory abnormality rather than a sign of true renal toxicity. Zhu argues that the potential benefits of Emi-Le, especially in a landscape with limited treatment options and poor patient outcomes, outweigh the risks. The market opportunity is significant, with comparisons drawn to Trodelvy’s estimated $1 billion in 2025 worldwide sales in TNBC, highlighting the potential upside for Mersana Therapeutics.
According to TipRanks, Zhu is a 4-star analyst with an average return of 10.3% and a 57.25% success rate. Zhu covers the Healthcare sector, focusing on stocks such as Zymeworks, IDEAYA Biosciences, and Nuvalent.

