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Operator
Good morning, ladies and gentlemen, and welcome to Jounce Therapeutics' second-quarter 2017 earnings conference call. (Operator Instructions) As a reminder, this conference call is being recorded at the Company's request.
The contents of this are property of Jounce Therapeutics and other recordings, reproduction, or transmission of this call without consent of Jounce Therapeutics is strictly prohibited.
I will now turn the call over to your host, Beth DelGiacco with Stern Investor Relations. Please go ahead.
Beth DelGiacco - IR, Stern Investor Relations, Inc.
Thank you, operator. Good morning and welcome to the Jounce Therapeutics second-quarter 2017 conference call. This morning we issued a press release which outlines the topics that we plan to discuss today. The release is available in the investors and media section of our website at www.jouncetherapeutics.com.
Before we begin, I would like to briefly remind everyone that we will be making certain forward-looking statements on today's call. These may include statements about our strategy, business plans and focus, the potential success of our product candidates, clinical plans and development timelines, the scope or timing of clinical data, financial projections, as well as other statements which relate to future events.
These statements are based on the belief and expectations of management as of today, August 9, 2017. Our actual results may differ materially from our expectations. Investors should read carefully the risks and uncertainties described in our earnings release and in our reports filed with the SEC, including the risk factors section of our most recent quarterly report on Form 10-Q. We assume no obligation to revise or update forward-looking statements whether as a result of new information, future events, or otherwise.
Leading today's call is our CEO Dr. Rich Murray, who will discuss Jounce's corporate highlights and lead clinical program JTX-2011, followed by our CFO Kim Drapkin, who will review our second-quarter 2017 financial results. Dr. Beth Trehu, our Chief Medical Officer, will also be available to answer questions at the end of opening remarks. We will then open the call for your questions.
With that, it is my pleasure to turn the call over to Rich.
Rich Murray - President and CEO
Thanks, Beth. Good morning, everyone, and thank you for joining our second-quarter earnings call. Jounce is a clinical stage immunotherapy company dedicated to transforming the treatment of cancer by developing therapies that stimulate the immune system to attack tumors and provide long-lasting benefit to patients.
Our vision for our expanding pipeline takes on a precision immunotherapy approach to match the right therapy to the right patients. This work is facilitated by our translational science platform that interrogates immune cell types within tumors, prioritizes targets, and identifies potential predictive biomarkers so that we can select the right patients for our therapeutics.
With a large number of agents entering clinical trials in immuno-oncology, we believe this approach will provide a more focused and differentiated way to treat the patients most likely to benefit from our therapies.
This morning we will provide a review of a few corporate highlights before discussing JTX-2011 and the Phase 1 portion of the ICONIC study presented at the annual ASCO meeting as well as details around the ongoing Phase 2 ICONIC study. On the latter, I am pleased to announce today that both the Phase 2 single-agent and combination portions of the study are now enrolling.
We are proud of the significant progress we made in 2017, starting with our successful IPO in the first quarter. This was an important milestone for Jounce and has provided us with the continued financial flexibility to focus on the execution of our lead program, JTX-2011, as well as advance our pipeline of innovative immunotherapies.
In May, we moved to our expanded facilities in Cambridge, Massachusetts, which allows us to continue building our great team, all of whom are dedicated to improving the lives of cancer patients. Last month we also marked the one-year anniversary of our global strategic collaboration with Celgene.
As a reminder, under the terms of the agreement, we received an upfront payment of $225 million, a $36.1 million equity investment, and are eligible to receive up to $2.6 billion in development, regulatory, and commercial milestones, option fees, and research term extension fees.
This collaboration provides us with the necessary funding to expand our efforts in cancer immunotherapy, advance more programs simultaneously, and maintain important US commercial rights.
We are enthusiastic about the ongoing advancement of our lead program, JTX-2011, and the progress of our earlier programs. We continue to feel that Celgene is the right strategic partner for us.
And now we will shift to the clinical progress of our lead program, JTX-2011. JTX-2011 is an agonist monoclonal antibody that targets ICOS, an inducible protein on the surface of T cells found in many tumors. It's the first clinical program to emerge from our translational science platform, which couples target mechanism to potential predictive biomarkers of response.
Jounce also prioritized ICOS based on the preclinical and clinical data from two of our founders, Drs. Pam Sharma and Jim Allison, which suggest that ICOS plays an important role in the immune response to cancer. JTX-2011 was designed to shift the balance in the tumor microenvironment from immunosuppressive towards antitumor activity by stimulating T effector cells and reducing intratumoral T regulatory cells.
The design of our clinical study was informed by two fundamental pieces of data from preclinical work. First, tumor efficacy in animals is dependent on a dose of JTX-2011 that engages the ICOS target at a certain level and for a certain duration of time. This can be measured in the clinic by a lab test called target engagement and is a key element of our dose selection approach. Second, tumor reduction only occurs in animals when a certain percentage of ICOS-positive immune cells are resident within the tumor, a key aspect of our biomarker approach.
With those two elements of preclinical science in mind, we initiated the Phase 1/2 ICONIC clinical trial last year. ICONIC is a four-part adaptive design open-label study with a Phase 1 and Phase 2 portion. Both the Phase 1 and Phase 2 portions include JTX-2011 alone and in combination with a fixed dose of nivolumab in patients with advanced solid tumors.
The primary objectives of the Phase 1 study were to establish safety and to identify the Phase 2 dose. In Phase 1, we identified a safe dose that met the prespecified target engagement criteria based on preclinical tumor efficacy.
Patients in Phase 1 were not enriched for high ICOS biomarker levels and most were heavily pretreated with an average of four to five prior lines of therapy. Our team did a great job and achieved the goal of establishing our safety profile and identifying the Phase 2 dose.
Per our guidance, we presented the Phase 1 safety, PK, and PD data of the ICONIC study in a poster at the 2017 ASCO meeting. We determined the Phase 2 dose of 0.3 mg/kg based on the safety and prospective PK/PD criteria, including target engagement, for both single agent and in combination with nivolumab.
Immune-related dose limiting toxicities were identified at the highest dose tested of 1 milligram per kilogram in monotherapy. The highest dose tested in the combination setting was 0.3 mg/kg, which was well tolerated.
The safety profile of JTX-2011 at 0.3 mg/kg and below, both alone and in combination, was very encouraging, as most adverse events were Grade 1 or 2. We observed evidence of biological activity by the dose-dependent increase in immune-related adverse events, which were easily managed and consistent with those seen with PD-1 inhibitors. We also observed a dose-dependent increase in interferon gamma in the blood, which we believe is directly related to biological activity and the mechanism of action.
In our Phase 2 studies, at the 0.3 mg/kg dose, we're evaluating JTX-2011 alone and in combination for preliminary efficacy across six different solid tumor types, each chosen based on the high prevalence of ICOS expression on immune cells within those tumors. In addition to the choice of tumor types, and supported by our preclinical science, we are further enriching for individual patients with high ICOS biomarker scores.
At least 50% of the patients in each tumor-specific cohort are expected to have a high ICOS biomarker score to enable correlation with preliminary efficacy evaluation. We believe this approach, applied early in development, is a step towards a more precision medicine future for immunotherapy.
As we previously announced, the enrollment for the Phase 2 Part C monotherapy began in April. And today, we are announcing that the enrollment of the Phase 2 Part D combination portion began in mid-July. Given that Part D only began recruiting a few weeks ago, we are pleased that we have already have patients dosed and under study from four of the six tumor type cohorts.
Additionally, our biomarker analysis, an integral component of the Phase 2 patient enrichment strategy, has performed well to date, particularly on the percentages of ICOS-positive scores projected by our translational science platform per tumor type. While still early in that analysis, we are pleased with our investment in translational work, a fundamental thesis at Jounce, to better understand the individual characteristics of the patients we are treating in the Phase 2 portion of ICONIC.
While we are all enthusiastic that all portions of the study are now rolling, we did face a specific one-time operational challenge with the target engagement assay from Phase 1, which was critical to our Phase 2 dose selection. We made a conscious decision to delay initiation of the Phase 2 until we rectified the situation, which we accomplished by enrolling additional patients and rerunning the target engagement assay.
Consequently, there was a delay in initiation of both the Phase 2 Part C monotherapy and Part D combination by approximately four months. We expect timing of data to be similarly delayed into the first half of 2018.
This is now behind us, as this particular assay was only required in the dose selection phase of the trial. We look forward to continuing to advance JTX-2011 and intend to present our preliminary efficacy evaluation from both Phase 1 and Phase 2 at a major medical meeting.
In addition to JTX-2011, I would also like to comment on the rest of our pipeline. We continue to advance our earlier stage programs and are pleased with the progress we have made.
In connection with the Celgene collaboration, we have active discovery programs, particularly from immunosuppressive macrophages, and have identified numerous additional targets using our translational science platform and continue to move them forward. We also continue to advance new cold tumor targets that are outside the collaboration and wholly owned by Jounce. These programs all have the potential to be novel first-in-class approaches in addressing unmet medical need.
At Jounce, our goal begins with helping cancer patients through the development of our innovative pipeline of immunotherapies. We believe our translational science platform continues to drive potential future value and growth. I have great confidence in our team and in our approach and I look forward to updating you on that progress as we continue to achieve throughout 2017 and beyond.
Now I'd like to turn the call over to Kim Drapkin, our CFO, for a discussion of our second-quarter financial results. Kim?
Kim Drapkin - CFO
Thank you, Rich. Good morning, everyone. Please refer to our press release issued earlier today for the summary of our second-quarter financial results. We reported cash, cash equivalents, and investments as of June 30, 2017, totaling $309.9 million compared to $257.4 million as of December 31, 2016. This increase was primarily due to the $106.4 million in net proceeds from our IPO, offset by operating cost during the year.
Collaboration revenues were $20.3 million for the second quarter of 2017. Jounce did not record any collaboration revenue during the same period in 2016. The increase in revenue was due to the Company's global strategic collaboration with Celgene, which we entered into in July 2016. Collaboration revenue in the second quarter of 2017 reflected the amortization of the upfront payment of $225 million received from Celgene in 2016.
Research and development expenditures were $17.2 million for the second quarter of 2017 compared to $6.5 million for the same period in 2016. The increase in R&D expenses was primarily due to the $3.7 million in increased clinical costs and $3 million in increased external R&D costs, primarily attributable to manufacturing costs for clinical trial material, both related to the Phase 1/2 ICONIC study of JTX-2011. We also recognized $1.8 million in increased employee compensation costs related to increased headcount and $1.2 million of increased facilities costs.
General and administrative expenses were $6.1 million for the second quarter of 2017 compared to $5.9 million for the same period in 2016. The increase in G&A expenses was primarily due to increased costs associated with being a public company, increased facilities and headcount costs, offset by a write-off of IPO-related legal and accounting costs.
Net loss was $3.4 million for the second quarter of 2017 or $0.11 per share as compared to a net loss of $12.3 million or $7.23 per share for the same period in 2016. The decrease in net loss per share attributable to common stockholders is primarily due to the completion of our IPO in February 2017, which resulted in the sale of 7.3 million shares of common stock and the automatic conversion of 22.3 million shares of convertible preferred stock into shares of common stock.
We reiterate the financial guidance previously provided for the full year 2017. Based on our current operating plan, Jounce expects to use approximately $100 million to $120 million in cash for the full year 2017, including the projected expense of operating activities, buildout and capital costs associated with the relocation of our lab and office space within Cambridge, and payment of federal and state income taxes related to the receipt of the Celgene upfront payment.
We expect collaboration revenue for the full year 2017 of approximately $80 million, representing the amortization of the Celgene upfront payment of $225 million received in 2016. Jounce continues to maintain a very strong balance sheet, which allows us to drive our innovative immunotherapy pipeline toward key value inflection points plus efficiently execute against our strategic plans and goals.
Based on our current operating plans, we continue to expect our existing cash, cash equivalents, and investments will be sufficient to enable us to fund our operating expenses and capital expenditure requirements for at least the next 24 months.
With that, I would now like to turn the call back over to Rich to wrap up.
Rich Murray - President and CEO
Thanks, Kim. Following a successful 2016, we continue to make significant progress in 2017, as highlighted throughout the call. Let me conclude by reiterating that our progress could not have been achieved without the hard work, passion, and dedication of our employees, Board, founders, ICONIC clinical trial investigators, and especially the patients.
We would now like to open the call for questions. Operator?
Operator
(Operator Instructions) Cory Kasimov, JPMorgan.
Cory Kasimov - Analyst
Good morning, guys, and thanks for taking the questions. First one is with regard to the delay in efficacy data into the first half of 2018 -- I appreciate all the color into the target engagement assay issues that you had.
But at this point, do you see any other risks to timing? Or are we now at a stage where this is really just accrual-based? And is the gating factor for data release based on sufficient follow-up in the combination arm or could monotherapy data be released separately? And then I have a follow-up for you.
Rich Murray - President and CEO
Sure, I will take that, Cory. Thanks. Yes, it very much was a delay in the initiation of the start. We made that conscious decision. We wanted the data to ensure that we made that important decision in the transition between Phase 1 and Phase 2. So that was a decision on our part.
But since that, that is now behind us. And the study, as we mentioned earlier on the call, is now enrolling and we are pleased with the start. Given the timing with the single agent and the combination agent, we see that as -- releasing that data together, that's always been the plan and that will continue to be the plan with going forward.
Cory Kasimov - Analyst
Okay. And then with regard to the safety data presented at ASCO, curious what that told you about the therapeutic window of JTX-2011. And maybe it would be helpful if you can compare the tox signals that you've seen there in that ASCO poster with what we've seen with some other I/O combinations, both in terms of frequency and types of adverse events.
Beth Trehu - Chief Medical Officer
Sure. Hi, this is Beth Trehu. So overall, the drug is very well tolerated, both as a single agent and in combination, with very few Grade 3/4 adverse events. I think that's very consistent with what we are seeing with other agonists in clinical development.
As Rich mentioned, the nature and the severity of the immune-related AEs is very consistent with what we see with PD-1 inhibitors. So we did see a dose-dependent increase in immune-related AEs and one of them -- or two of them, sorry, were considered dose-limiting toxicities at 1 mg/kg.
Both of those were actually very easily managed and so we don't see the immune-related toxicities as being any kind of a problem. They are very easily managed. Conversely, we actually see them as evidence of biological activity.
In terms of the therapeutic window, we had already selected 0.3 mg/kg based on the target engagement PK/PD data, as Rich mentioned. And after we had actually selected the dose, we saw the dose-limiting toxicities. So we don't feel there is any need to go above 0.3 mg/kg at this time to achieve the biological effects that we were looking for. But we will be continuing to follow safety data closely as we continue.
Cory Kasimov - Analyst
Okay. And then one final question for you, bigger picture. I'm just curious as to your overall view on the recent top-line MYSTIC headlines and maybe the implications for the field. Or more importantly, do you see any read-through to your programs at Jounce? Thanks.
Rich Murray - President and CEO
Yes, that's an interesting point. There has certainly been the occasional trial popping up that has changed or at least shocked people. I think we view that as the importance of really understanding the patients that are enrolling in these trials. And as there's we expect bound to be shifts in the types of immune infiltrate within tumors.
So we believe that really speaks to the overall mission here at Jounce, aligning to really trying to understand the patients that we are treating and recruiting into our trials. So many other factors, of course, could come into play as we look at those results.
But I do think a piece of that puzzle is assuring that you understand as well as you can the patients that are being recruited into the trials. And that's really how we've set up our translational system is to do just that.
Cory Kasimov - Analyst
Okay, great. Appreciate it. Thanks for taking the questions.
Operator
Boris Peaker, Cowen.
Boris Peaker - Analyst
I just want to follow-up maybe on terms of the efficacy, initial efficacy discussion. Curious if you are seeing any correlation between ICOS-related biomarkers, perhaps, such as interferon gamma or something else. And any kind of initial efficacy signals so far?
Beth Trehu - Chief Medical Officer
Thanks. So we look forward to presenting our preliminary efficacy in the first half of next year. And we don't intend to be providing any information either on enrollment or emerging data from this study.
As Rich mentioned, we are very pleased with the performance of the ICOS biomarker, particularly in the percentage of ICOS-positive scores that was predicted by our translational science platform.
As you know, we chose the Phase 2 tumor types based on their predicted levels of ICOS. And so we are really looking forward to being able to analyze the data with an aggregate when we have a sufficient number of patients. However, we do see that dose-dependent increase in interferon gamma, again, as an evidence of biological activity.
Boris Peaker - Analyst
Great. And I'm just curious also from the enrollment perspective, are there any kind of competing ICOS-related studies that you may be competing with?
Beth Trehu - Chief Medical Officer
Yes. GSK has an ICOS agonist study that is enrolling. We are aware of that. We don't have any insight into how well their enrollment is going. As far as we know, most of their sites are ex-US and thus not directly competing with us.
Boris Peaker - Analyst
Great. And just maybe on your PD-1 or the 4014 asset, any updates on a strategy there how you'd like to develop it?
Rich Murray - President and CEO
Sure. Well, certainly, let me start with that, with the recognition of our partner Celgene's deal with BeiGene. So just a starting point to that topic, there's a number of kind of points to make.
We have strong and very frequent communications with Celgene, so there were no surprises there as that -- after that deal was done. And as Celgene has stated, their access to PD-1 was done at least in part to enable their collaborators for use of PD-1. So we are actually pleased and see that as a beneficial opportunity for access to a more advanced agent.
In terms of JTX-4014, we are still in pre-IND-enabling work. And our view really right now is that the field in I/O is moving so rapidly and such an incredible manner that right now we think having all types of optionality for the PD-1 inhibitors is critical.
Boris Peaker - Analyst
So when do you anticipate it to be in the clinic?
Rich Murray - President and CEO
We haven't announced that yet. But it's fair to say that we are into IND-enabling preclinical development.
Boris Peaker - Analyst
Great. Thank you very much for taking my questions.
Operator
Jim Birchenough, Wells Fargo.
Nick Abbott - Analyst
Good morning. It's Nick in for Jim this morning. And congratulations on getting the Phase 2 going. That must be very exciting. Can I just go back to some of the data that was presented at ASCO?
At the risk of overanalyzing small numbers, I mean, it did say there were no changes in levels of circulating T cells, including T reg. So is this intratumoral versus circulating nuance? Were any of these patients ICOS-high? And were you able to look at, say, neoantigen-specific activity of CD4 or CD8 T cells? And then I have a follow-up. Thanks.
Beth Trehu - Chief Medical Officer
Sure, yes. This was peripheral data, and we viewed it more from a safety perspective. Based on the mechanism of action of the drug and the fact that in all of our preclinical work the pharmacological activity has really been focused in the tumor, we did not expect to see any significant changes in peripheral T cells.
If you recall, ICOS is really expressed at very low levels in resting T cells. And it's only after that initial engagement with antigen, which we think is going to be happening much more in the tumors where the T cells are in contact with the tumors and their correspondent antigens, that's where you get the increase in ICOS and then JTX-2011 binds. So we really do expect most of the activity to be in the tumors and do not expect to see any significant changes in peripheral T cells.
With respect to knowing what's going on in the tumors, I think you are aware that in our PK/PD expansion cohorts we will be looking at biopsies pre and post treatment. We did not share any data from that analysis in the ASCO poster, but look forward to including that analysis when we present preliminary efficacy data from Phase 1 and Phase 2 next year.
Nick Abbott - Analyst
Great, thank you. And in terms of the safety, there were some patients who had antidrug antibodies. Did they correlate with immune-mediated related toxicities as also part of the same immune response?
Beth Trehu - Chief Medical Officer
Sure. There were so few patients with antidrug antibody, it's really too soon to do any analysis of that. We do know that there was only one patient in whom the PK appeared to have any -- to be impacted in any way. But again, we will be updating on the full data set when we present our preliminary efficacy next year.
Nick Abbott - Analyst
Okay, great. Thanks. And then can you just remind me, in terms of the Phase 2, the proportion of ICOS-high patients you expect in each of those tumors?
Beth Trehu - Chief Medical Officer
Yes. So in the AACR presentation, which is on our website, we have the bar graph which represents the data that we generated in hundreds of human tumor samples, looking at the percentages of ICOS 0, 1 plus, 2 plus, and 3 plus patients.
And in head and neck cancer, our prediction had been something around 40% of those patients having a 2 plus or a 3 plus. The 2 plus or 3 plus is what corresponded to single-agent efficacy in the animal models.
Non-small cell lung cancer was next, with about 30%. Triple negative breast cancer also about 30%. But you can see the percentages as predicted. Those were done on tissue micro arrays or TMAs.
As we mentioned, we are very pleased with the performance of the ICOS IHC assay in the clinic, and particularly with the percentage of high ICOS tumors that was predicted by the translational science platform. So we will be, again, including that when we present our preliminary efficacy data next year.
Nick Abbott - Analyst
So as you have come to the end of enrolling patients in these cohorts, then you're going to be having screen failures. Presumably at the moment, there are no screen failures because you can allow ICOS-high and ICOS-low patients.
But if you stipulate more than 50% have to be ICOS-high, do you think as you get towards the end of enrollment that causes challenges? Or are these patients being screened potentially for multiple studies?
Beth Trehu - Chief Medical Officer
That's a good question. I think the key for us is regular communication with our investigators so that they know how many slots are open for ICOS-low or ICOS-high patients as we proceed. So we are managing it very closely and in regular communication with the investigators.
Nick Abbott - Analyst
Thank you very much.
Operator
(Operator Instructions) Mike Ulz, Robert Baird.
Mike Ulz - Analyst
Thanks for taking the question and thanks for providing all the color. Just a quick question for the JTX-2011 data that's expected in the first half of next year. Can you maybe comment on what potential medical meeting you might be targeting at this point?
Beth Trehu - Chief Medical Officer
Yes, we haven't disclosed which medical meeting at this point, but we really do look forward to presenting a comprehensive data package from Phase 1 and Phase 2 at a major medical meeting. As you know, I mean, we have to submit the abstract. We can't really say what meeting because we have to wait to see when we get accepted.
Mike Ulz - Analyst
Got it. Thanks.
Operator
Thank you. I'm showing no further questions at this time. I'd like to hand the call back over to Mr. Rich Murray for any closing remarks.
Rich Murray - President and CEO
Thanks, everybody, for joining us and for your questions. We appreciate the continued interest and support and we look forward to updating you on our progress in the future. So thank you again.
Operator
Ladies and gentlemen, thank you for participating in today's conference. This does conclude today's program. You may all disconnect. Everyone have a great day.