BioAtla Q2 2024 Earnings Call Transcript

Quartr
Provided by Quartr
August 8, 2024

There are 8 speakers on the call.

Operator

Thank you, operator, and good afternoon, everyone. With me today on the phone from BioAtla are Doctor. Jay Short, Chairman, CEO and Co Founder and Richard Waldron, Chief Financial Officer. Following today's call, Doctor. Eric Sievers, Chief Medical Officer and Sherry Lydic, Chief Commercial Officer will join Jay and Rick in a short Q and A.

Operator

Earlier this afternoon, Bio Atlas released financial results and a business update for the Q2 ended June 30, 2024. A copy of the press release and corporate presentation are available on the company's website. Before we begin, I'd like to remind everyone that statements made during this conference call will include forward looking statements, including but not limited to statements regarding Bio Atlas business plans and prospects and whether its clinical trials will support registration, plans to form collaborations and other strategic partnerships for selected assets, achievement of milestones, results, conduct, progress and timing of its research and development programs and clinical trials expectations with respect to enrollment and dosing in its clinical trials plans and expectations regarding future data updates, clinical trials, regulatory meetings and regulatory submissions the potential regulatory approval path for its product candidates expectations about the sufficiency of its cash and cash equivalents to fund operations and expectations regarding R and D expense and cash burn. These statements are subject to various risks, assumptions and uncertainties that can cause actual results to differ materially and are described in the filings made with the SEC, including the most recent quarterly report on Form 10 Q. You are cautioned not to place undue reliance on these forward looking statements, which speak only as of today, August 8, 2024, and BioAtlet disclaims any obligation to update such statements to reflect future information, events or circumstances except as required by law.

Operator

With that, I'd like to turn the call over to Doctor. Jay Short. Jay?

Speaker 1

Thank you, Bruce, and thanks to everyone for joining us for our Q2 2024 BioAdler earnings call. Additional details related to what we will share today are available in today's press release and our updated company presentation, which are available on our website. Also, the presentation and webcast of our R and D Day held 2 weeks ago, featuring 3 renowned KOLs are also available on our website. We continue to make considerable progress across all of our ongoing clinical programs. Beginning with our CABOR-two ADC or zurisdemab vedotin being evaluated as a monotherapy and highly treatment refractory head and neck cancer patients with a median of 3 prior lines of treatment, we shared last quarter that among the 29 evaluable patients, 11 responses were documented at the combined 2Q3W and Q2W dose regimens with 6 responses now confirmed.

Speaker 1

We have an abstract accepted as a poster presentation at the upcoming ESMO conference and look forward to sharing the updated data in September. Additionally, we continue to see a manageable safety profile with no new safety signals to date. Given the strength of the data, we recently received a fast track designation from the FDA, which represents an important recognition of the potential of a zuriftumab vedotin to potentially fill a significant unmet need in refractory head and neck cancer. The encouraging clinical profile supports rapidly advancing into a potentially registrational trial evaluating monotherapy treatment versus investigators choice in the second line and beyond setting. And we are on track to meet with the FDA later this year to discuss further.

Speaker 1

Moving now to our CAV CTLA-four antibody, evalsitug. As presented during our R and D day, we have treated 40 patients across multiple doses of evalsitug and we continue to observe low incidence and severity of immune related adverse events in the combined safety from our Phase 1 and Phase 2 studies. Specifically, a relatively low rate of Grade 3 immune related adverse events were observed in only 4 out of 40 patients with no Grade 4 or 5 related treatment emergent adverse events. The incidence and severity of immune related AEs were consistent across both Phase 1 and Phase 2 studies. With regards to efficacy from our Phase 1 study, we previously reported confirmed responses for 3 of 8 treatment refractory patients using the 3 50 milligram dose in combination with a PD-one antibody, including one complete response with one additional partial response that according to the attending physician showed no evidence of disease and may eventually be ruled a second complete response.

Speaker 1

No dose interruptions occurred in patients treated with greater than or equal to 3 50 milligrams of ALSTITOG and multiple patients have remained on therapy for more than 1 year without progression. These data are consistent with the anticipated benefits of our conditionally binding technology. Initial data from our Phase 2 monotherapy study across 14 different treatment refractory solid tumor types at 3 50 milligrams or 7 100 milligrams showed 10 patients with stable disease and multiple patients experienced prolonged progression free survival for greater than 10 months. We look forward to presenting the data at several upcoming medical conferences, including an oral presentation at the Society For Melanoma Research Congress in October and the poster presentation at the Society For Immunotherapy of Cancer in November. We continue to enroll in the Phase 2 first line melanoma study followed by mutated non small cell lung cancer using a combination of avalstatug and PD-one antibody.

Speaker 1

We are on track for an initial data readout of melanoma later this year. Based on our evolving data, we continue to believe that Ostratuck has the potential to be the best in class C2A4 antibody that holds the promise to be used as often as a PD-one antibody and potentially expand the indications where combined immune checkpoint inhibition can be effective. We are now designing a blinded randomized pivotal trial employing a valsitide plus PD-one antibody for newly diagnosed metastatic or unresectable melanoma patients and anticipate FDA guidance in the second half of this year. Now on to our cabaxel ADC asset, mekmodemab zedotin. As part of our Phase in patients with non small cell lung cancer, we have completed an additional expansion cohort of 33 patients to evaluate actual expression, dose, subtype and safety.

Speaker 1

In our subgroup analysis, we observed that actual expression of greater than or equal to 1% is correlated with clinical benefit in heavily pretreated patients with a median of 3 prior lines of therapy. We further evaluated the genotype status in this heavily pretreated patient population with tumors expressing multiple KRAS mutation variants, including G12A, G12C and G12V. Among the 18 evaluable patients with known KRAS mutations, we observed 5 responders, including 1 responder whose tumor expressed the mutated KRAS G12C variant and has experienced prior failure of SOTA RAPTIS. In addition, we have a patient with a complete response that has been maintained now for over 2 years, demonstrating encouraging clinical benefit in this emerging opportunity in patients with mutated KRAS variants. Importantly, our initial findings support a trend for improved overall survival among patients with tumors expressing mutated KRAS variants compared to the KRAS wild type genotype.

Speaker 1

Furthermore, a manageable safety profile continues with many new safety signals identified in this patient population. We continue to assess KRAS expression across the Phase 2 data set and look forward to providing an update and additional details regarding a potential path forward later this year. Regarding our Phase 2 potentially registrational trial in undifferentiated pleomorphic sarcoma, UPS, we are evaluating the initial 20 patient data set and we'll provide an update on the remaining portion of the registrational trial later this year. Now in our Phase III dose escalation study for cabaptchemcabcd3tcellengager, the study is progressing and ongoing. We remain on track for a Phase 1 data readout in the second half of this year.

Speaker 1

The T cell engager space offers tremendous opportunity for more effective therapies and in particular our CAB enabled APKAM T cell engager has the potential to treat patients with a wide range of metastatic tumors, including cancers of colon, lung, breast, pancreas, prostate among others. Finally, we are in meaningful discussions regarding potential strategic partnerships with multiple companies evaluating selected preclinical and clinical assets. The current stage of these discussions support our belief that we remain on track for establishing 1 or more collaborations this year, including for one of our Phase 2 clinical assets. With that, I would now like to turn the call over to Rick to review the Q2 2024 Financials. Rick?

Speaker 2

Thank you, Jay. Research and development expenses were $16,200,000 for the quarter ended June 30, 2024 compared to $31,000,000 for the same quarter in 2023. The decrease of $14,800,000 was primarily due to completion of preclinical development for our Nekten Core ADC, which received IND clearance in May 2024 and the impact of prioritization of our clinical programs in 2023, resulting in less expense for our preclinical programs in 2024. Our clinical program expense decreased due to completion of Phase 2 enrollment for our ongoing ADC trials for meclotumab vedotin and ozariftumab vedotin. We expect our R and D expenses to continue to decrease in the near term as we complete our planned Phase 2 clinical trial and meet with the FDA to discuss potentially registrational trials for our Phase 2 programs.

Speaker 2

General and administrative expenses were $5,800,000 for the quarter ended June 30, 2024 compared to $6,200,000 for the same quarter in 2023. The $500,000 decrease was primarily due to lower stock based compensation expense. Net loss for the quarter ended June 30, 2024 was $21,100,000 compared to a net loss of $35,800,000 for the same quarter in 2023. Net cash used in operating activities for the 6 months ended June 30, 2024 was $50,000,000 compared to net cash used in operating activity of $46,700,000 for the same period in 2023. Our cash used for the quarter ended June 30, 2024 was $19,000,000 compared to $30,800,000 during the quarter ended March 31, 2024.

Speaker 2

In line with our operating plan, we expect a further reduction in overall cash utilization in the Q3 of 2024. Cash and cash equivalents as of June 30, 2024 were $61,700,000 compared to $111,500,000 as of December 31, 2023. We expect current cash and cash equivalents will be sufficient to fund planned operations, including our prioritized CAB programs through the Q3 of 2025, which is sufficient to deliver clinical readouts in multiple indications, position our programs for 1 or more potentially registration trials and enhance our position in advancing strategic collaboration discussions. And now back to Jay.

Speaker 1

Thank you, Rick. We are pleased with the considerable progress we have made to date and our cumulative results across our CAB pipeline targeting solid tumors. We continue to focus on finalizing the data readouts and reports for our CAB Axle, cab WAR2 and cab C-twelve forty four assets and look forward to presenting WAR2 and C-twelve forty four data at upcoming medical meetings, as well as keeping you updated on our business activities. With that, we will turn it back to the operator to take your questions.

Speaker 3

Our first question comes from Brian Chiang with JPMorgan. Please go ahead.

Speaker 4

Hey guys, good afternoon. Thanks for taking our questions. Maybe just first on Axle and UPS. Can you confirm if you have met with the FDA on the remaining portion 4 in the registrational study? If so, what is the initial feedback from the agency?

Speaker 4

And just furthermore, can you give us a bit more color on the patient compliance and safety profile that you saw in the initial clinical patients? And I have a quick follow-up. Thank you.

Speaker 1

Eric, this one sounds like it's for you.

Speaker 5

Great. Thanks, Brian. So as we previously disclosed, we had a conversation with the FDA about mycobetimab vedotin in undifferentiated preomorphic sarcoma. And we discussed Project Optimus requirements. We discussed treating at 2 different dose levels, we discussed the potential bar for accelerated approval with a single arm trial data sets.

Speaker 5

We have not met with the agency yet with regard to our recent enrollment of the additional patients and we would plan to review our data and then update on this later in the second half of the year. And Brian, I think you had additional questions about overall safety. Is that right?

Speaker 4

Yes. And I guess just from the initial twenty patients, I think you can provide any color on patient compliance and any initial read on efficacy and safety that will be very helpful.

Speaker 1

Sure. But I think on the efficacy, we're not able I was just going to say on the efficacy, we're not because it's part of the potential registrational trial, we're not able to update publicly on that. But on the safety, I think in general, Eric, at a high level, you certainly can update that.

Speaker 5

Yes. I'm happy to do so. Certainly, no new safety findings have been identified with the ADC. And we did decide that giving the drug every on the 3Q4 regimen was we didn't see much patient compliance with that coming in so frequently to clinics. So we really focused on the days 1 and 8 regimen of a 3 week cycle.

Speaker 4

Okay. Maybe just lastly, just on the partnership or BD Fund. Can you just talk about your level of confidence, whether you'll be able to lock in a potential deal in the back half of this year? And when as you think about the potential partners that are on the table, which potential assets do you think would make the most sense to partner off based on the current data? Thank you.

Speaker 1

So I'm fairly confident that we're going to be successful in establishing partnerships 1 or more in this remaining portion of the year. I think we as I mentioned in the script, we also may see a partnership as part of that in the preclinical assets. When it comes to the I think the ADCs are certainly getting the most limelight in discussions. And so I think it's a little difficult to predict for sure which one would partner first, but I'd say both are potential candidates. We like them both.

Speaker 1

So I think we remain on a we feel we remain on track for that as best one can forecast. And the discussions are clearly at a meaningful level. And so we're very encouraged, Brian.

Speaker 3

We'll go next to Tony Butler with Rodman and Renshaw. Please go ahead.

Speaker 6

Hi, this is Toshiya San on for Tony. Question is about the Axle ADC. I seem to recall that the patient with the complete response received the combination. Now as it pertains to the combination, I wonder if you can characterize what you see since the last data update when it comes to, let's say, seeing a potential deepening of response or patients who are not quite there when it comes to having a response, getting close to that negative 30% mark over time.

Speaker 5

Eric, do you want to So it's Eric Sievers again. And, so if I can clarify, I think you're asking about our relatively mature data set now with moclodumab vedotin in non small cell lung cancer and you commented on the CR patient that we've reported previously. And then I think the second part of your question was asking about whether we've seen deepening of some of these responses over time. I think I'd probably best to refer everyone to Slide 45 in our updated corporate deck, where we are characterizing the confirmed responses across the KRAS mutation variance. Interestingly, one of our responses is a CR patient and then also direct folks to Slide 46, which is a preliminary analysis suggesting a difference in outcome amongst patients expressing the mutated KRAS versus wild type KRAS genotype.

Speaker 5

So we are continuing to witness the data evolving over time. This is our current data set that we've made public and look forward to continuing to evaluate the evolving KRAS story. I want to indicate that 21 of the patients still have a pending genotype and we're categorizing them as either wild type or mutant, so we can further this preliminary finding.

Speaker 6

I understand and thank you for that. Furthermore, how would you characterize responses and or clinical activity, let's say disease control duration longer than and fewer than 16 weeks. With this with the combination of meblozumab, vedotin and nivolumab in patients whose serous mutation status is either unknown or wild type?

Speaker 5

So looking at Slide 45, we're seeing a duration of response of 4.8 months for those with the mutated KRAS. I think that the survival curves give a suggestion of a somewhat lower PFS amongst the patients with a wild type KRAS and we've not performed a formal analysis of the 21 individuals that are unknown. So I look forward to a future data presentation in Medical Congress where that will be disclosed. I do

Speaker 1

think it's a fairly competitive profile given the fact this is effectively a 4th line, median 4th line set of patients.

Speaker 6

Thank you.

Speaker 3

We'll go next to Arthur He with H. C. Wainwright.

Speaker 7

Hey, good afternoon guys. Thanks for taking my question. So I had a couple of quick ones. So for the XL program, regarding the UPS study, if I understand correctly, you have the additional 20 patient data. And as of now, you're just going to pick waiting for the data to take to the FDA.

Speaker 7

Meantime, are you still enrolling patients in the program?

Speaker 1

We are not enrolling patients at the moment. We're waiting for the 3 total scans and evaluating the data comes in and then we'll proceed from there.

Speaker 7

I see. Thanks, Jay. And for the non small cell lung cancer study in the future, My take is you probably got to taking the KRAS status as well as the XL status together to select the patient or you might go for either one?

Speaker 1

I think it could be either one, but I think right now we see a nice correlation on MKRAS. It just happens to be that actual is highly correlated with that. So it's not necessarily required that you have that axles expression. We clearly see benefit with our drug with axial expression. So when we finish the next 21 patients analysis, obviously, we'll be comparing that and coming forward with how we think it best be carried out.

Speaker 7

Got you.

Speaker 5

Can I add to that too, Because Arthur, I think that it's a great question? And as Jay said, these are evolving data. We're looking at the 21 patients to see how they sort out between mutated and wild type. But it's conceivable that if the KRAS findings are further supported with additional data that given that that's a standard assessment, the genotype of lung cancer patients is very standard, for defining the appropriate treatment options, that this would enable a pretty straightforward approach for defining a population experiencing pronounced clinical benefit, again illustrated in Slide 46 with the difference of survival that we're seeing. Now that could be biologic differences between those 2 subgroups of patients.

Speaker 5

It also could be due to the drug.

Speaker 7

Thanks for the color, Eric. And I had another one for the CTLA-four study. Just curious, do you guys still plan to enroll more patients at for the monotherapy at the 700 milligram dose level or that's pretty much the 19 I guess the 19 patient is the for the is every patient that you plan for the monotherapy study?

Speaker 5

I'm happy to take that. So we do not plan to further characterize monotherapy safety. Safety. I want to emphasize that the Phase 2 monotherapy approach was a way to very efficiently and rapidly confirm our hypothesis that antibodies. We believe that we are indeed seeing a substantially lower rate of immune mediated adverse events.

Speaker 5

And so, our focus is now combining with PD-one antibody approaches and further evaluating drug activity and safety in newly diagnosed metastatic or unresectable melanoma as well as patients with lung cancer with specified mutations.

Speaker 7

Got you. Thanks for taking my question. Talk soon.

Operator

Thank you.

Speaker 3

I'm showing no further questions at this time. I will now turn the program back over to Jay Short for closing remarks.

Speaker 1

Thanks everyone for attending today and we look forward to seeing everyone at ESMO in September as well as in our additional conferences coming up in the near future. Thank you. And we'll also intend to report out on our business developments as they occur. Thank you.

Speaker 3

This does conclude today's program. Thank you for your participation. You may disconnect at any time.

Powered by Quartr
Earnings Conference Call
BioAtla Q2 2024
00:00 / 00:00