Top 18 Monoclonal Antibody startups

Updated: Feb 16, 2026
|
These startups focus on creating highly specific antibodies that can bind to unique antigens on diseased cells, offering more effective treatment options with fewer side effects compared to traditional therapies.
1
Alentis Therapeutics
Country: Switzerland | Funding: $365.4M
ALENTIS Therapeutics develops novel therapeutics for the treatment of advanced liver fibrosis and liver cancer. The company is developing a portfolio of antibody-drug conjugates (ADCs) and monoclonal antibodies against its therapeutic target, claudin-1. Its unique antibodies specifically target exposed claudin-1 to open the rigid extracellular matrix, block disease signals and, in cancer, selectively kill tumor cells. ALENTIS's clinical candidates include the ADC ALE.P02 for the treatment of squamous cell carcinomas and the monoclonal antibody lixudebart for the treatment of organ fibrosis. In addition to clinical development, its preclinical programs include other anti-claudin-1 therapies, including other ADCs.
2
Ikena Oncology
Country: USA | Funding: $209M
Ikena Oncology is developing novel immunometabolic therapies. Its flagship drug IMG-007 is a monoclonal antibody against OX40 with an extended half-life (5 weeks) for patients with immunological, autoimmune and inflammatory diseases. IMG-007 contains a modified Fc region that blocks ADCC function, meaning signaling by activated T cells is weakened without destroying or depleting T cells. This solution has the potential to improve tolerability and increase the range of measurement, leading to the use of higher doses, increased efficacy and improved safety. The company's primary target is atopic dermatitis. In a proof-of-concept clinical trial in patients with moderate to severe atopic dermatitis, three doses of IMG-007 administered over a one-month period resulted in symptom reduction in the majority of patients. Ikena Oncology was acquired by ImageneBio
3
ImmunityBio
Country: USA | Funding: $1.4B
ImmunityBio is a privately held immunotherapy company with one of the broadest portfolios of biological molecules spanning albumin-linked chemotherapeutic, peptides, fusion proteins, cytokine, monoclonal antibodies, adenovirus and yeast vaccine therapies.
4
Arcus Biosciences
Country: USA | Funding: $1.3B
Arcus discovers and develops innovative cancer immunotherapies based on known but under-exploited biology. Arcus’s lead program targets the adenosine pathway, which has been shown to play a significant role in driving immuno-suppression in the tumor micro-environment.
5
ADC Therapeutics
Country: Switzerland | Funding: $1B
ADC Therapeutics is focused on the creation of proprietary Antibody Drug Conjugates (ADCs) for the therapy of both solid and hematological cancers. It uses monoclonal antibodies specific to specific tumor antigens conjugated to a innovative class of highly potent pyrrolobenzodiazepine (PBD)-based warheads to specifically kill cancer cells. The company is expanding ZYNLONTA into earlier stages of DLBCL and indolent lymphomas. In addition, IND-enabling efforts are in progress for the Company’s exatecan-based, prostate-specific membrane antigen.
6
Astria Therapeutics
Country: USA | Funding: $656.4M
Astria Therapeutics discovers and develops innovative drugs for treating inflammatory conditions.
7
Zenas BioPharma
Country: USA | Funding: $513M
Zenas BioPharma is a biopharmaceutical company that focuses on developing immune-based therapies for patients.
8
Invivyd
Country: USA | Funding: $496M
Invivyd develops antibodies to transcend the limitations of the human immune system and fight against viral infections.
9
Evelo Biosciences
Country: USA | Funding: $397M
Evelo is pioneering therapies that modulate systemic immune response by acting on the gut-body network - monoclonal microbials. They have the potential to treat many diseases, including inflammatory disease, cancer, autoimmune disease, metabolic, neurobehavior and neuroinflammatory diseases.
10
AgomAb Therapeutics
Country: Belgium | Funding: $325.6M
AgomAb Therapeutics is a Company is developing growth factor-mimetic agonistic monoclonal antibodies to regenerate damaged tissues.
11
Adcendo
Country: Denmark | Funding: $249.6M
ADCendo develops antibody-drug conjugates (ADCs) for the treatment of cancers with high unmet medical needs. The company is developing two technologies: ADCE-T02, which combines an optimized monoclonal antibody targeting tissue factor (overexpressed in numerous solid tumor indications) with a next-generation linker and exatecan delivery technology, providing higher efficacy and improved tolerability. The second candidate is ADCE-D01 - a first-in-class ADC targeting uPARAP, an endocytic receptor overexpressed in a wide range of mesenchymal tumors, including soft tissue sarcomas, osteosarcoma, GISTs, mesothelioma and glioblastoma.
12
SynOx Therapeutics
Country: Ireland | Funding: $245.9M
SynOx is developing emactuzumab, a best-in-class CSF1R targeted therapeutic antibody designed to target and deplete tumour-associated macrophages in the tumour tissue.
13
HiFiBiO Therapeutics
Country: France | Funding: $179.5M
HiFiBiO Therapeutics is biotherapeutics company mobilizing the human immune system to combat disease. We integrate deep-rooted biological expertise with our comprehensive single-cell profiling technologies to rapidly discover and advance a pipeline of antibody drugs to treat cancer and autoimmune disorders. We also aspire to benefit patients through open-innovation partnerships with industry and academia.
14
Santa Ana Bio
Country: USA | Funding: $176M
Santa Ana Bio is a biotechnology company focusing on precision immunology for autoimmune and inflammatory diseases.
15
Aqualung Therapeutic
Country: USA | Funding: $22.3M
Aqualung Therapeutics is developing a novel, anti-inflammatory monoclonal antibody strategy to treat serious unchecked inflammation.
16
HaemaLogiX
Country: Australia | Funding: A$10M
HaemaLogiX develops novel immuno-oncology and immunotherapy drugs for the treatment of blood cancers and B-cell diseases. Unlike existing treatments, HaemaLogiX products preserve the patient's immune system, helping fight cancer and maintain resistance to life-threatening infections during treatment. HaemaLogiX drugs are monoclonal antibodies that bind to unused and unique targets - KMA (kappa myeloma antigen) and LMA (lambda myeloma antigen) antigens - which are absent on normal plasma cells. The company is also developing KMA.CAR-T cell therapy, designed for separate subsets of multiple myeloma patients to KappaMab who have become resistant to standard treatments. The binding arm of KappaMab is connected to two proteins inside the T cell that are capable of stimulating and signalling to the T cell that it should destroy the KMA-positive myeloma cell.
17
BioArctic
Country: Sweden
BioArctic is a Swedish research-oriented biopharma company.
18
Renaissance Pharma
Country: UK
Renaissance Pharma is a clinical-stage pharmaceutical company.
  See also:
Jason Kwon
Editor: Jason Kwon
Jason Kwon is a senior editor for MedicalStartups. He has previously covered the pharmaceutical and medical research industries for FDAnews and worked as a head of marketing for medical startup Sonic Therapeutics. Before that, he co-founded a startup consulting business for emerging entrepreneurial hubs in Asia. Jason graduated from St. Bonaventure University’s journalism school. In his free time, Jason enjoys yoga, watching movie trailers, traveling to places where he can't get cell service. You can contact Jason at jaskwon(at)medicalstartups(dot)com