(DumbMoney)

Explore the latest updates and key analyses on companies, markets, and industry trends.


Kalaris Therapeutics Reports Positive Phase 1a Data for TH103 in Neovascular AMD Treatment

Kalaris Therapeutics (KLRS) | December 17, 2025

By Uma Mitchell

image

Kalaris Therapeutics announces positive initial data from Phase 1a trial of TH103 in neovascular AMD patients.

TH103 demonstrates significant improvements in vision and retinal anatomy with potential for extended durability.

The drug shows promising efficacy and safety profile, supporting further dose escalation and ongoing trials.

Promising Results

TH103 shows mean 10-letter gain in visual acuity and rapid anatomic improvement at Month 1.

Enhanced Potency

TH103 engineered for extended intraocular retention with enhanced VEGF inhibition.

Safety Profile

TH103 generally well tolerated with no significant adverse events observed.

Extended Durability

31% of patients received no additional anti-VEGF treatment during six-month follow-up after single TH103 injection.

  • TH103's engineered properties lead to 27 to 51-fold lower plasma Cmax compared to current anti-VEGF agents, indicating increased intraocular retention.
  • Initial data suggests potential for extended treatment durability with promising clinical activity and safety profile.

The positive initial Phase 1a data for TH103 demonstrate its potential as an effective treatment option for neovascular AMD, paving the way for further development and clinical trials.