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CLDX > SEC Filings for CLDX > Form 10-Q on 2-Nov-2012All Recent SEC Filings

Show all filings for CELLDEX THERAPEUTICS, INC.



Quarterly Report

Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations

Safe Harbor Statement under the Private Securities Litigation Reform Act of 1995: This report on Form 10-Q contains forward-looking statements made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995 under Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. Forward-looking statements include statements with respect to our beliefs, plans, objectives, goals, expectations, anticipations, assumptions, estimates, intentions and future performance, and involve known and unknown risks, uncertainties and other factors, which may be beyond our control, and which may cause our actual results, performance or achievements to be materially different from future results, performance or achievements expressed or implied by such forward-looking statements. All statements other than statements of historical fact are statements that could be forward-looking statements. You can identify these forward-looking statements through our use of words such as "may," "will," "can," "anticipate," "assume," "should," "indicate," "would," "believe," "contemplate," "expect," "seek," "estimate," "continue," "plan," "point to," "project," "predict," "could," "intend," "target," "potential" and other similar words and expressions of the future.

There are a number of important factors that could cause the actual results to differ materially from those expressed in any forward-looking statement made by us. These factors include, but are not limited to:

† our ability to raise sufficient capital to fund our clinical studies to meet our long-term liquidity needs, on terms acceptable to us, or at all;

† our ability to successfully complete research and further development, including animal, preclinical and clinical studies, and commercialization of rindopepimut, CDX-011, CDX-1127, and other drug candidates and the growth of the markets for those drug candidates;

† our ability to manage multiple clinical trials for a variety of drug candidates at different stages of development, including our Phase 3 trial for rindopepimut;

† the cost, timing, scope and results of ongoing safety and efficacy trials of rindopepimut, CDX-011, CDX-1127 and other preclinical and clinical testing;

† our ability to fund and complete the development and commercialization of rindopepimut for North America internally and to find a strategic partner to commercialize rindopepimut outside of North America;

† the ability to negotiate strategic partnerships, where appropriate, for our lead programs, including CDX-011 and CDX-1127, as well as for our non-core programs;

† the strategies and business plans of our partners, such as GlaxoSmithKline's plans with respect to Rotarix® and Vaccine Technologies' plans concerning the CholeraGarde® (Peru-15) and ETEC E. coli vaccines, which are not within our control, and our ability to maintain strong, mutually beneficial relationships with these partners;

† our ability to adapt our proprietary antibody-targeted vaccine technology, or APC Targeting Technology™, to develop new, safe and effective vaccines against oncology and infectious disease indications;

† our ability to develop technological capabilities and expand our focus to broader markets for vaccines;

† the availability, cost, delivery and quality of clinical and commercial grade materials produced by our own manufacturing facility or supplied by contract manufacturers and partners;

† the availability, cost, delivery and quality of clinical management services provided by our clinical research organization partners;

† the timing, cost and uncertainty of obtaining regulatory approvals for our drug candidates;

† our ability to develop and commercialize products before competitors that are superior to the alternatives developed by such competitors;

† the validity of our patents and our ability to avoid intellectual property litigation, which can be costly and divert management time and attention; and

† the factors listed under the headings "Business," "Risk Factors" and "Management's Discussion and Analysis of Financial Condition and Results of Operations" in the Company's annual report on Form 10-K for the year ended December 31, 2011 and other reports that we file with the Securities and Exchange Commission.

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All forward-looking statements are expressly qualified in their entirety by this cautionary notice. You are cautioned not to place undue reliance on any forward-looking statements, which speak only as of the date of this report or the date of the document incorporated by reference into this report. We have no obligation, and expressly disclaim any obligation, to update, revise or correct any of the forward-looking statements, whether as a result of new information, future events or otherwise. We have expressed our expectations, beliefs and projections in good faith and we believe they have a reasonable basis. However, we cannot assure you that our expectations, beliefs or projections will result or be achieved or accomplished.


We are a biopharmaceutical company focused on the development and commercialization of several immunotherapy technologies for the treatment of cancer and other difficult-to-treat diseases. Our lead drug candidates include rindopepimut (CDX-110), an immunotherapeutic vaccine in a pivotal Phase 3 study for the treatment of front-line glioblastoma and a Phase 2 study for the treatment of recurrent glioblastoma, CDX-011, an antibody-drug conjugate which recently completed a randomized Phase 2b study for the treatment of advanced breast cancer and CDX-1127, a therapeutic human antibody in a Phase 1 study for cancer indications. We have additional clinical and preclinical programs, including CDX-1401, an APC Targeting Technology™ program, CDX-301, an immune cell mobilizing agent and dendritic cell growth factor and CDX-1135, a molecule that inhibits a part of the immune system called the complement system. Our drug candidates address market opportunities for which we believe current therapies are inadequate or non-existent.

Generally our strategy is to develop and demonstrate proof-of-concept for our drug candidates before leveraging their value through partnerships or, in appropriate situations, continuing late stage development through commercialization ourselves. Demonstrating proof-of-concept for a drug candidate generally involves bringing it through Phase 1 clinical trials and one or more Phase 2 clinical trials so that we are able to demonstrate, based on human trials, good safety data for the drug candidate and some data indicating its effectiveness. We thus leverage the value of our technology portfolio through corporate, governmental and non-governmental partnerships. This approach allows us to maximize the overall value of our technology and product portfolio while best ensuring the expeditious development of each individual product. Our current collaborations include the commercialization of an oral human rotavirus vaccine. We are exploring potential development and commercialization collaborations for certain drug candidates such as CDX-011 and CDX-1127. Furthermore, while we plan to retain the rights to develop and commercialize rindopepimut in North America, we are exploring potential partnership opportunities to commercialize rindopepimut outside of North America.

Our products are derived from a broad set of complementary technologies which have the ability to utilize the human immune system and enable the creation of therapeutic agents. We are using these technologies to develop targeted immunotherapeutics comprised of antibodies, adjuvants and monotherapies and antibody-drug conjugates that prevent or treat cancer and other diseases that modify undesirable activity by the body's own proteins or cells. A number of our immunotherapeutic and antibody-drug conjugate drug candidates are in various stages of clinical trials. We expect that a large percentage of our research and development expenses will be incurred in support of our current and future clinical trial programs.

The following table includes the programs that we currently believe are significant to our business:

Product (generic)                Indication/Field             Partner         Status
CDX-110 (rindopepimut)     Front-line glioblastoma        -                 Phase 3
CDX-110 (rindopepimut)     Recurrent glioblastoma         -                 Phase 2
CDX-011 (glembatumumab     Metastatic breast cancer and   -                 Phase 2b
vedotin)                   melanoma
CDX-1127                   Lymphoma/leukemia and solid    -                 Phase 1
CDX-1401                   Multiple solid tumors          -                 Phase 1
CDX-301                    Cancer, autoimmune disease     -                 Phase 1
                           and transplant
CDX-1135                   Renal disease                  -                 Preclinical
CDX-014                    Ovarian and renal cancer       -                 Preclinical

Rotarix® Rotavirus infection GlaxoSmithKline Marketed

The expenditures that will be necessary to execute our business plan are subject to numerous uncertainties. Completion of clinical trials may take several years or more, and the length of time generally varies substantially according to the type, complexity, novelty and intended use of a product candidate. It is not unusual for the clinical development of these types of product candidates to each take five years or more, and for total development costs to exceed $100 million for each product candidate. Our estimates that clinical trials of the type we generally conduct are typically completed over the following timelines:

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Clinical Phase     Period
Phase 1          1 - 2 Years
Phase 2          1 - 5 Years
Phase 3          1 - 5 Years

The duration and the cost of clinical trials may vary significantly over the life of a project as a result of differences arising during the clinical trial protocol, including, among others, the following:

†          the number of patients that ultimately participate in the trial;

†          the duration of patient follow-up that seems appropriate in view of

† the number of clinical sites included in the trials;

† the length of time required to enroll suitable patient subjects; and

† the efficacy and safety profile of the product candidate.

We test potential product candidates in numerous preclinical studies for safety, toxicology and immunogenicity. We may then conduct multiple clinical trials for each product candidate. As we obtain results from trials, we may elect to discontinue or delay clinical trials for certain product candidates in order to focus our resources on more promising product candidates.

An element of our business strategy is to pursue the research and development of a broad portfolio of product candidates. This is intended to allow us to diversify the risks associated with our research and development expenditures. As a result, we believe our future capital requirements and our future financial success are not substantially dependent on any one product candidate. To the extent we are unable to maintain a broad range of product candidates, our dependence on the success of one or a few product candidates increases.

Regulatory approval is required before we can market our product candidates as therapeutic or vaccine products. In order to proceed to subsequent clinical trial stages and to ultimately achieve regulatory approval, the regulatory agency must conclude that our clinical data is safe and effective. Historically, the results from preclinical testing and early clinical trials (through Phase 2) have often not been predictive of results obtained in later clinical trials. A number of new drugs, biologics and vaccines have shown promising results in early clinical trials, but subsequently failed to establish sufficient safety and efficacy data to obtain necessary regulatory approvals.

Furthermore, our business strategy includes the option of entering into collaborative arrangements with third parties to complete the development and commercialization of our product candidates. In the event that third parties take over the clinical trial process for one of our product candidates, the estimated completion date would largely be under control of that third party rather than us. We cannot forecast with any degree of certainty which proprietary products, if any, will be subject to future collaborative arrangements, in whole or in part, and how such arrangements would affect our development plan or capital requirements. Our programs may also benefit from subsidies, grants, contracts or government or agency-sponsored studies that could reduce our development costs.

As a result of the uncertainties discussed above, among others, we are unable to estimate the duration and completion costs of our research and development projects or when, if ever, and to what extent it will receive cash inflows from the commercialization and sale of a product. Our inability to complete our research and development projects in a timely manner or our failure to enter into collaborative agreements, when appropriate, could significantly increase our capital requirements and could adversely impact our liquidity. These uncertainties could force us to seek additional, external sources of financing from time to time in order to continue with our business strategy. Our inability to raise additional capital, or to do so on terms reasonably acceptable to us, would jeopardize the future success of our business.

During the past five years through December 31, 2011, we incurred an aggregate of $118.8 million in research and development expenses. The following table indicates the amount incurred for each of our significant research programs and for other identified research and development activities during the nine months ended September 30, 2012 and 2011. The amounts disclosed in the following table reflect direct research and development costs, license fees associated with the underlying technology and an allocation of indirect research and development costs to each program.

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Nine Months Ended September 30,
                          2012                  2011
                                (In thousands)
Rindopepimut        $          17,396     $           4,249
CDX-011                         3,437                 3,593
CDX-1127                        3,043                 4,800
CDX-1401                          827                 1,888
CDX-301                         1,143                   856
CDX-1135                        6,321                 3,553
CDX-014                           612                   347
Other Programs                    871                 3,329
Total R&D Expense   $          33,650     $          22,615

Clinical Development Programs

Rindopepimut (CDX-110)

Our lead clinical development program, rindopepimut, is an immunotherapeutic vaccine that targets the tumor-specific molecule, epidermal growth factor receptor variant III, or EGFRvIII. EGFRvIII is a mutated form of the epidermal growth factor receptor, or EGFR, that is only expressed in cancer cells and not in normal tissue and can directly contribute to cancer cell growth. EGFRvIII has been shown by polymerase chain reaction analysis to be expressed in approximately 31% of glioblastoma, or GB, tumors, also referred to as glioblastoma multiforme, or GBM, the most common and aggressive form of brain cancer. The rindopepimut vaccine is composed of the EGFRvIII peptide linked to a carrier protein called Keyhole Limpet Hemocyanin, or KLH, and administered together with the adjuvant GM-CSF. The Food and Drug Administration, or FDA, and the European Medicines Agency, or EMA, have both granted orphan drug designation for rindopepimut for the treatment of EGFRvIII expressing GB and the FDA has also granted Fast Track designation.

In April 2008, we and Pfizer Inc. entered into a License and Development Agreement under which Pfizer was granted an exclusive worldwide license to rindopepimut. This agreement provided for reimbursement by Pfizer of all costs incurred by us in connection with the collaboration since the effective date. In November 2010, the agreement was terminated and all rights to rindopepimut were returned to us. Pfizer did not provide a reason for termination. Since the termination of this agreement, Pfizer is no longer funding the development of rindopepimut.

The Phase 2a study of rindopepimut referred to as ACTIVATE was led by collaborating investigators at the Brain Center at Duke Comprehensive Cancer Center in Durham, North Carolina and at M.D. Anderson Cancer Center in Houston, Texas and enrolled 18 evaluable GB patients. An extension of the Phase 2a study referred to as ACT II evaluated 22 additional GB patients treated in combination with the current standard of care, maintenance temozolomide, or TMZ, at the same two institutions.

We initiated ACT III, a Phase 2b/3 randomized study of rindopepimut combined with standard of care, TMZ, versus standard of care alone in patients with GB in over 30 sites throughout the United States. In December 2008, we announced an amendment to convert the ACT III study to a single-arm Phase 2 clinical trial in which all patients were to receive rindopepimut in combination with TMZ. The decision, which followed the recommendation of the Independent Data Monitoring Committee, was based on the observation that the majority of patients randomized to the control (standard of care) arm withdrew from this open-label study after being randomized to the control arm. Patients participating in the control arm of the study were offered the option to receive treatment with rindopepimut. Under this amendment, the ACT III study provided for a multi-center, non-randomized dataset for rindopepimut in patients with newly diagnosed GB.

In November 2010, we announced complete data for the primary endpoint of the 65 patients enrolled to receive rindopepimut in combination with maintenance TMZ in the ACT III study. The data showed that 43 of 65 patients (66%) were progression-free at 5.5 months after entry into the study. Taking into account the 3 to 3.5 months required to complete pre-study chemoradiation and enter into the study, the 5.5 month time point in ACT III corresponds to approximately 8.5 months after diagnosis. The ACTIVATE and ACT II trials, which were conducted in two leading centers, reported progression-free rates at 8.5 months after diagnosis of 70% and 80%, respectively, and similar results were seen in the ACT III trial, which enrolled patients in over 25 centers in the United States.

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The following table summarizes the progression free survival, or PFS, and overall survival, or OS, rates from clinical trials of rindopepimut as compared to matched historical controls and the standard of care, or SOC.

                                               Median PFS from         Median OS from
                                              diagnosis (months)     diagnosis (months)    OS at 24 months
ACT III (n=65)                                              12.3 (1)               24.6                 52 %
ACT II (n=22)                                               15.3                   24.4                 50 %
ACTIVATE (n=18)                                             14.2                   24.6                 50 %
Matched historical control (n=17)(2)                         6.4                   15.2                  6 %
Standard of care radiation/TMZ (n=287)(3)                    6.9                   14.6                 27 %

(1) Change in median PFS not statistically significant from ACTIVATE and ACT II.

(2) Sampson, et al. J. Clin. Oncol. 2010 Nov 1, 28(31), 4722-9. Historical controls were treated at M.D. Anderson and matched for eligibility (EGFRvIII-positive, Karnofsky performance status greater-than or equal to 80%, complete resection, radiation/TMZ and without progression through approximately 3 months post-diagnosis).

(3) Stupp, et al. N. Engl. J. Med. 2005, 352, 987-96.

Importantly, rindopepimut showed a similar benefit in patients whether or not they expressed MGMT, an active DNA repair gene that has been shown to limit the benefit from TMZ treatment. In ACT III, the number of patients who were expected to be resistant to the TMZ chemotherapy appeared to do better with vaccination than the numbers observed in the historical data. Patients who have an unmethylated MGMT generally have a worse outcome presumably because they do not gain much benefit from TMZ as reported in the literature. Patients with a methylated MGMT promoter in their tumor do not express MGMT and have a more favorable outcome to TMZ treatment. Patients with methylated tumors (n=25) that were treated with the rindopepimut regimen experienced a median PFS of 17.5 months, which compares favorably with the published data from the SOC of radiation plus TMZ of 10.3 months. Patients with unmethylated tumors (n=40) that were treated with the rindopepimut regimen experienced a median PFS of 11.2 months, which compared favorably to the PFS with SOC of 5.3 months in this patient population. Thus, rindopepimut would appear to benefit both methylated and unmethylated MGMT patients. We expect to present updated overall survival data from the Phase 2 ACT III, ACT II and ACTIVATE studies at the Society for Neuro-Oncology meeting in November 2012.

In December 2011, we initiated ACT IV, a pivotal, randomized, double-blind, controlled Phase 3 study of rindopepimut in patients with surgically resected, EGFRvIII-positive GB. Patients are randomized after the completion of surgery and standard chemoradiation treatment. The treatment regime includes a vaccine priming phase post-radiation followed by an adjuvant TMZ phase and a vaccine maintenance therapy phase. Patients are treated until disease progression or intolerance to therapy. The primary objective of the study is to determine whether rindopepimut plus adjuvant GM-CSF improves the overall survival of patients with newly diagnosed EGFRvIII-positive GB after Gross Total Resection, or GTR, when compared to treatment with TMZ and a control injection of KLH. KLH is a component of rindopepimut and was selected due to its ability to generate a similar injection site reaction to that observed with the rindopepimut vaccine. ACT IV will enroll up to 440 patients at over 150 centers worldwide to recruit approximately 374 patients with GTR to be included in the primary analysis. Our targeted patient accrual is 24 months and another 18 to 24 months of follow-up. In early 2013, we anticipate initiating a parallel, randomized, double-blind, controlled Phase 2 study in western Europe to optimize accrual of the pivotal (registration) study and to further support potential future commercial efforts in this region, assuming rindopepimut is approved by the EMA. We anticipate these two studies to cost over $60 million during their duration.

In December 2011, we also initiated ReACT, a Phase 2 study of rindopepimut in combination with Avastin® in patients with recurrent EGFRvIII-positive GB. ReACT will enroll approximately 95 patients in a first or second relapse of GB following receipt of standard therapy and will be conducted at approximately 20 sites across the United States. Approximately 70 patients who have yet to receive Avastin will be randomized to receive either rindopepimut and Avastin or a control injection of KLH and Avastin in a blinded fashion. Another 25 patients who are refractory to Avastin having received Avastin in either the frontline or recurrent setting with subsequent progression will receive rindopepimut plus Avastin in a single treatment arm. We expect preliminary data from this study to be available in the second half of 2013.

In addition, researchers at Stanford University are conducting an investigator sponsored, pilot trial of rindopepimut in pediatric patients with pontine glioma. Patient screening is ongoing for this trial.

Glembatumumab Vedotin (CDX-011)

CDX-011 is an antibody-drug conjugate, or ADC, that consists of a fully-human monoclonal antibody, CR011, linked to a potent cell-killing drug, monomethyl-auristatin E, or MMAE. The CR011 antibody specifically targets glycoprotein NMB, or

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GPNMB, that is expressed in a variety of human cancers including breast cancer and melanoma. The ADC technology, comprised of MMAE and a stable linker system for attaching it to CR011, was licensed from Seattle Genetics, Inc. The ADC is designed to be stable in the bloodstream. Following intravenous administration, CDX-011 targets and binds to GPNMB and upon internalization into the targeted cell, CDX-011 is designed to release MMAE from CR011 to produce a cell-killing effect. The FDA has granted Fast Track designation to CDX-011 for the treatment of advanced, refractory/resistant GPNMB-expressing breast cancer.

Treatment of Breast Cancer: In June 2008, an open-label, multi-center Phase 1/2 study was initiated of CDX-011 administered intravenously once every three weeks to patients with locally advanced or metastatic breast cancer who had received prior therapy (median of seven prior regimens). The study began with a bridging phase to confirm the maximum tolerated dose, or MTD, and then expanded into a Phase 2 open-label, multi-center study.

The study confirmed the safety of CDX-011 at the pre-defined maximum dose level (1.88 mg/kg) in 6 patients. An additional 28 patients were enrolled in an expanded Phase 2 cohort (for a total of 34 treated patients at 1.88 mg/kg, the Phase 2 dose) to evaluate the PFS rate at 12 weeks. As previously seen in melanoma patients, the 1.88 mg/kg dose was well tolerated in this patient population with the most common adverse events of rash, alopecia, and fatigue. The primary activity endpoint, which called for at least 5 of 25 (20%) patients in the Phase 2 study portion to be progression-free at 12 weeks, was met as 9 of
26 (35%) evaluable patients were progression-free at 12 weeks.

For all patients treated at the maximum dose level, tumor shrinkage was seen in 62% (16/26) and median PFS was 9.1 weeks. A subset of 10 patients had "triple negative disease," a more aggressive breast cancer subtype that carries a high risk of relapse and reduced survival as well as limited therapeutic options due to lack of over-expression of HER2/neu, estrogen and progesterone receptors. In these patients, 78% (7/9) had some tumor shrinkage, 12-week PFS rate was 70% (7/10), and median PFS was 17.9 weeks. Tumor samples from a subset of patients . . .

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