Last updated 2026-06-18
- Raised $4M funding round, Apr 2010
- Raised $3M funding round
- Raised $1.9M grant
Total raised
$8.9M
Last: 2010-04
Stage
Series A
Founded
2005
Headcount
6
HQ
Jerusalem, Israel
Sector
—
About
ProtAb Ltd is focused on the development of therapeutic agents that modulate cytokine regulation, tipping the balance toward anti-inflammatory signaling pathways in the treatment of autoimmune and inflammatory diseases. The companys first product, Prozumab, is a monoclonal antibody with a novel mechanism of action. It is currently in late-stage preclinical development for the treatment of inflammatory bowel disease (IBD), ulcerative colitis (UC), and rheumatoid arthritis (RA). ProtAb operates as a subsidiary of Hadasit Bio-Holdings Ltd (HBL). HBL is a publicly traded subsidiary of Hadasit Ltd, the technology transfer company of the Hadassah University Hospital in Jerusalem, Israel.
Funding history · 3 rounds · $8.9M total
Date unknown
Grant
$1.9M
Date unknown
Q&A
- What is ProtAb's primary focus?
- ProtAb is focused on developing therapeutic agents that modulate cytokine regulation to treat autoimmune and inflammatory diseases.
- What is ProtAb's lead product?
- ProtAb's first product is Prozumab, a monoclonal antibody currently in late-stage preclinical development for inflammatory bowel disease (IBD), ulcerative colitis (UC), and rheumatoid arthritis (RA).
- When was ProtAb founded?
- ProtAb was founded in August 2005.
- What is ProtAb's current operational status?
- ProtAb has been inactive since December 2017.
- What is ProtAb's total funding raised?
- ProtAb has raised a total of $8.9 million USD.
- Which investors participated in ProtAb's funding rounds?
- Investors in ProtAb's funding rounds include Pontifax and Hadasit Bio-Holdings (CBI).
- Who is the founder of ProtAb?
- Yaakov Naparstek is the founder of ProtAb.
- What is ProtAb's relationship with Hadasit Bio-Holdings Ltd?
- ProtAb operates as a subsidiary of Hadasit Bio-Holdings Ltd (HBL), which is a publicly traded subsidiary of Hadasit Ltd, the technology transfer company of the Hadassah University Hospital in Jerusalem, Israel.
Team · 1
Sectors & technology
Sub-sectors
Health Tech & Life SciencesPharma & Medical BiotechnologyDrugs Discovery & Development
Technologies
Biologicals
Target customers
Healthcare & Life SciencesLife SciencesPharmaceuticals
Business model
B2B
Highlights
1 Patents
Tags
antibodiesinflammatory-diseasesbiotechnologydiabetespharmaceuticalstherapeuticsautoimmune-diseases
Full data — links, identifiers, deals & radar signals (jobs, patents, research, more)
Identifiers & details
| Founded | 2005-8 |
|---|---|
| Employees (exact) | 6 |
| Status reason | Non Active, Dec 2017 |