Amir London
Analyst · Stifel
Thank you, Brian. And thanks also to our investors and analysts for your interest in Kamada and for participating in today's call. We are extremely pleased with the strong financial and operational start to 2024, including nearly doubling our profitability as compared to the first quarter of last year.
Importantly, based on our strong performance in the first quarter and our expectation for the continued momentum in our business throughout 2024, we are raising our full year 2024 revenue guidance to be between $158 million to $162 million, and we are also increasing our adjusted EBITDA guidance to be between $28 million to $32 million.
I will begin with a high-level review of our strong financial results for the first quarter of 2024. We generated total revenues of $37.7 million, which represented a robust year-over-year growth of 23% and recorded adjusted EBITDA of $7.5 million, a 96% increase compared to the first quarter of 2023, representing a 20% margin of revenues.
We are very pleased with this substantial increase in profitability. While we benefit from the strength of our entire portfolio of 6 FDA-approved products, we continue to effectively leverage the 2 most important growth drivers in our business, KEDRAB and CYTOGAM. We are encouraged by the continued growth demonstrated by KEDRAB in the U.S. market.
And with respect to the CYTOGAM, we are starting to see the benefit of a direct physician engagement and promotional activities being executed by our U.S. medical and commercial team. Multiple studies conducted by leading U.S. transplantation KOLs related to the benefit of CYTOGAM have been accepted for presentation at transplantation-related medical meetings this year, in addition to the presentation last October at IDWeek.
We expect continued steady growth in demand for this important product, which is the only one of its kind approved by the FDA and Health Canada. Moving on, I'd like to highlight our strong balance sheet. We ended the first quarter with approximately $48 million in cash, and we continue to have the financial strength to both accelerate the growth of existing business and pursue compelling business development opportunities, a process we remain actively engaged in and which could add one or more commercial products to our existing portfolio.
These opportunities are expected to support continued significant growth beyond 2024. I should also highlight that during the first quarter, we completed the successful launch in Israel, of BEVACIZUMAB KAMADA, the biosimilar to Avastin, which is indicated for the treatment of certain types of cancer, including colon cancer and metastatic breast cancer.
This represents the first biosimilar product to be launched and distributed by Kamada in Israel. We have several others in the pipeline to be launched in the coming years, and we expect biosimilars to become an increasingly important aspect of our distribution business.
Looking further ahead, the future catalysts. Enrollment continues in the ongoing pivotal Phase III InnovAATe clinical trial of our inhaled Alpha-1 antitrypsin therapy for the treatment of Alpha-1 deficiency. The following recent received of positive feedback from the FDA through which the agency expressed its willingness to potentially accept a p-value of 0.1 alpha level in evaluating InnovAATe for meeting the study efficacy primary endpoint for registration.
We recently filed an IND amendment with both a revised Statistical Analysis Plan and study protocol. We anticipate further FDA feedback in the second half of this year. If approved, these changes may allow for the acceleration of the program. In addition, to reiterate what we said on our last call, the FDA also previously reconfirmed overall design of our ongoing clinical program and endorsed the Data and Safety Monitoring Board unblinded positive safety assessment.
The agency also accepted our plan to conduct an open-label extension study, which is expected to be initiated already this month. As a reminder, the European Medicine Agency, the EMA, previously also reconfirmed the overall design of the ongoing InnovAATe study and acknowledged statistically and clinically meaningful improvement in lung function as measured by FEV1 demonstrated in our prior Phase II/III European study.
As we have said previously, in parallel to the significant clinical and regulatory progress achieved, we also continue to have active discussions with multiple parties related to potential partnering of this promising late-stage product candidate.
We also continue to progress Kamada Plasma, plasma collection operation in the U.S. We continue to successfully expand the hyperimmune plasma collection capacity at our first center and construction is nearly completed at our second plasma center located in Houston, Texas, expected to be opened during the second half of this year. We recently also signed a lease agreement for our third site located in San Antonio, Texas.
With that, I'll now turn the call over to Chaime for a detailed discussion of our financial results for the first quarter of 2024. Chaime, please go ahead.