SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934
Date of Report (Date of earliest event reported): January 8, 2018
ACCELERON PHARMA INC.
(Exact name of Registrant as specified in its charter)
(State or other jurisdiction
128 Sidney Street
(Address of principal
Registrant’s telephone number, including area code: (617) 649-9200
(Former name or former address, if changed since last report)
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:
o Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
o Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
o Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
o Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))
Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).
Emerging growth company o
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o
Item 7.01 Regulation FD Disclosure.
On January 8, 2018, Acceleron Pharma Inc. (the "Company") uploaded a slide presentation to its website to be presented at the JP Morgan Healthcare Conference. A copy of this slide presentation is furnished herewith as Exhibit 99.1 to this Current Report on Form 8-K.
The furnishing of the attached slide presentation is not an admission as to the materiality of any information therein. The information contained in the slides is summary information that is intended to be considered in the context of more complete information included in the Company's filings with the Securities and Exchange Commission and other public announcements that the Company has made and may make from time to time by press release or otherwise. The Company undertakes no duty or obligation to update or revise the information contained in this report, although it may do so from time to time as its management believes is appropriate.
The information contained in Item 7.01 of this Current Report on Form 8-K and Exhibit 99.1 attached hereto is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”) or for any other purpose, and shall not be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, regardless of any general incorporation language in any such filing, except as expressly set forth by specific reference in such a filing.
Item 8.01 Other Events.
On January 8, 2018, the Company issued a press release titled "Acceleron Announces Preliminary Results from Part 1 of the ACE-083 Phase 2 Trial in Patients with Facioscapulohumeral Dystrophy." A copy of the press release is attached as Exhibit 99.2 to this Current Report on Form 8-K and is incorporated herein by reference.
Item 9.01 Financial Statements and Exhibits.
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.
ACCELERON PHARMA INC.
/s/ John D. Quisel, J.D., Ph.D.
John D. Quisel, J.D., Ph.D.
Senior Vice President and General Counsel
Date: January 8, 2018
Acceleron Forward-Looking Statements
THIS PRESENTATION CONTAINS FORWARD-LOOKING STATEMENTS ABOUT THE COMPANY’S STRATEGY, FUTURE PLANS
and prospects, including statements regarding the development of the Company's compounds, the timeline for clinical
development and regulatory approval of the Company’s compounds and the expected timing for reporting of data from
ongoing clinical trials. The words “anticipate,” “believe,” “could,” “estimate,” “expect,” “goal,” “intend,” “may,” “plan,”
“potential,” “project,” “should,” “target,” “will,” “would,” and similar expressions are intended to identify forward-looking
statements, although not all forward-looking statements contain these identifying words.
ACTUAL RESULTS COULD DIFFER MATERIALLY FROM THOSE INCLUDED IN THE FORWARD-LOOKING STATEMENTS DUE to
various risks and uncertainties, including, but not limited to, that preclinical testing of the Company's compounds
data from clinical trials may not be predictive of the results or success of ongoing or later clinical trials, that the
development of the Company's compounds will take longer and/or cost more than planned, that the Company or its
collaboration partner, Celgene, will be unable to successfully complete the clinical development of the Company’s
compounds, that the Company or Celgene may be delayed in initiating, enrolling or completing any clinical trials, and that
the Company's compounds will not receive regulatory approval or become commercially successful products. These and
other risks and uncertainties are identified under the heading "Risk Factors" included in the Company's most recent
Annual Report on Form 10-K, and other filings that the Company has made and may make with the SEC in the future.
THE FORWARD-LOOKING STATEMENTS CONTAINED IN THIS PRESENTATION ARE BASED ON MANAGEMENT’S CURRENT
views, plans, estimates, assumptions and projections with respect to future events, and the Company does not undertake
and specifically disclaims any obligation to update any forward-looking statements.
is to transform the lives
of patients with serious
and rare diseases
Harnessing the Power of TGF-Beta Biology
Strategic Focus in Three Therapeutic Areas
C E L L U L A R :
High Unmet Medical Need Across Therapeutic Area Focus
HEMATOLOGY NEUROMUSCULAR PULMONARY
MDS / Thalassemia / MF FSHD / CMT PAH
No approved anemia therapies
RBC transfusions + off-label meds
Focal muscle disease
Physical therapy and bracing
Multiple drugs approved,
yet still only 5-7 year survival
Leader in neuromuscular and
Complement in-house research
portfolio success with BD efforts
to drive therapeutic area leadership
Drive life-cycle management
Potential multi-billion $ asset
Leader in chronic anemia
Develop first-in/best-in class assets
Building Therapeutic Area Leadership
Myelodysplastic Syndromes (MDS)
Preclinical Phase 2 Phase 3 Product
MEDALIST Phase 3
COMMANDS Phase 3 (Planned)
BELIEVE Phase 3
Phase 2 Base/Extension
Myelofibrosis (MF) Phase 2
BEYOND Phase 2
Phase 2 CMT Disease
Sotatercept Phase 2 Study (Planned) Pulmonary Arterial Hypertension (PAH)
ACE-1334 Pulmonary Disease Preclinical
Phase 2 (Planned)
Chronic Anemia Due to Rare Blood Disorders
Genetic hemoglobin mutation
Fibrotic bone marrow disease
Bone marrow failure disorder
High Need for RBC Transfusion Reduction/Elimination
Reduces quality of life
Negatively impacts progression and survival
Inconvenient – 3 to 5 hours every 2 to 3 weeks
Causes high spikes and low troughs in Hb levels
Human derived product
Potential iron overload
Increase and maintain ↑ hemoglobin levels
Reduce or eliminate RBC transfusion burden
Non-EPO Driven/Ineffective Erythropoiesis Chronic Anemias
Erythroid maturation agent (EMA)
1 2 3 4 5 6 7
Hemoglobin (Hb) production
Multiple Phase 3 and Phase 2 Trials Ongoing and Planned
First-line / ESA Naive RS+ ESA Refractory / Ineligible
Monotherapy / Combination
MDS Trials Supported by Luspatercept Phase 2 Results
First-line / ESA Naïve RS+ ESA Refractory / Ineligible
RBC Transfusion Independence
1. ASH 2017: ESA naïve LR MDS patients, RBC-TI: 17/31 or 55%
2. ASH 2015: RS+ LR MDS patients, RBC-TI: 12/31 or 39%
RBC Transfusion Independence
Phase 2 Results
Beta-Thalassemia Trials Supported by Luspatercept Phase 2 Results
Increase in Mean Hb ≥ 1.5 g/dL
1. EHA 2017: NTD patients, ≥ 1.5 g/dL, 16/31 or 52%, over a 12-week period on treatment versus baseline
2. EHA 2017: TD patients, 12/29 or 41%, in weeks 13-24 fixed interval compared to 12 weeks pre-treatment
RBC Transfusion Reduction ≥ 33%
Phase 2 Results
MF Trial Supported by Sotatercept Phase 2 MD Anderson IST Results
1. ASH 2017: sotatercept, 7/18 or 39% of evaluable patients
2. ASH 2017: sotatercept, 3/10 or 30% of evaluable patients
Phase 2 Results
MDS (RS+) ESA
Building a Potential Multi-Billion Dollar Anemia Brand
Long-Term Durability of Response (Ongoing Phase 2 Trials)
1. ASH 2017: Mutational Profile and Analysis of Lower-Risk Myelodysplastic Syndromes (MDS) Patients Treated with Luspatercept: Phase 2 PACE-MDS Study
2. EHA 2017: Luspatercept Increases Hemoglobin and Decreases Transfusion Burden in Adults With Beta-Thalassemia
3. ASH 2017: Sotatercept (ACE-011) Alone and with Ruxolitinib in Patients with MPN-associated Myelofibrosis (MF) and Anemia, 7/18 monotherapy
Collaborating with the Leader in Hematology
100% Celgene funded
Low- to mid-20%
Building a Neuromuscular Franchise with ACE-083 and ACE-2494
Administered into target muscle
for concentrated effect
ACE-083: A Locally-Acting Myostatin+ Therapy to Target Focal
20,000 US patients
> 100,000 US patients
Preliminary Results for Phase 2 FSHD Study - Part 1, Cohorts 1
and 2 Pooled
N=11 N=12 %
Tibialis Anterior Biceps Brachii
Tibialis Anterior Biceps Brachii
No serious adverse events, a majority of adverse events were injection-site related and grades 1-2
One patient with related grade 3 non-serious adverse event of “lower leg intramuscular swelling”
MRI 3 weeks after last dose
Building a Pulmonary Platform Starting with PAH
Sotatercept Profile and Preclinical Results in PAH
SOTATERCEPT IS A TGF-BETA LIGAND TRAP
Blocks activin restoring the BMP signaling pathway
Phase 2 ready with ~400 patients of clinical experience
Subcutaneous injection every three weeks
Outperforms standard of care in preclinical animal models
Pulmonary Arterioles (10-50 µm, N=100) Classification (%)
% of Completely Muscularized Vessels
Vehicle Sildenafil Sotatercept1
Where Could Sotatercept Fit in Treatment Paradigm?
Standard of Care Options
Goal: Significantly Extend Survival and Quality of Life with Disease Modifying
sGC Stimulators + SOTATERCEPT
MOA: Vascular Remodeling/
Upcoming Corporate Priorities
– MEDALIST and BELIEVE Phase 3 trial top-line results expected in mid-2018
– Initiate the COMMANDS Phase 3 trial in 1H 2018
– FSHD and CMT Part 1 of Phase 2 trial preliminary results from all dose-escalation cohorts in 2H 2018
– Initiate FSHD Part 2 of Phase 2 trial Q2 2018
– Initiate CMT Part 2 of Phase 2 trial YE 2018
– Phase 1 healthy volunteer trial results in 1H 2019
– Initiate Phase 2 trial in PAH in 1H 2018
Our Commitment to Late-Stage Milestones
Acceleron Announces Preliminary Results from Part 1 of the ACE-083 Phase 2 Trial
in Patients with Facioscapulohumeral Dystrophy
- Mean total muscle volume increases of over 12% in the tibialis anterior and biceps brachii muscle cohorts -
- Company plans to initiate Part 2 of the FSHD Phase 2 trial in Q2 2018 -
Cambridge, Mass. – January 8, 2018 – Acceleron Pharma Inc. (NASDAQ:XLRN), a leading biopharmaceutical company in the discovery and development of TGF-beta therapeutics to treat serious and rare diseases, today announced positive preliminary results for the first two cohorts in Part 1 of the Phase 2 clinical trial with ACE-083 in patients with facioscapulohumeral dystrophy (FSHD), a rare genetic muscle disorder that results in progressive focal muscle loss and weakness. The Company plans to initiate Part 2 of the ACE-083 FSHD Phase 2 trial during the second quarter of 2018.
“Preliminary results of ACE-083 in FSHD patients demonstrated positive safety and tolerability along with unprecedented mean increases in total muscle volume of over 12% in the two distinct muscles evaluated,” said Matthew Sherman, M.D., Chief Medical Officer of Acceleron. “These data support
our decision to advance to Part 2 of the Phase 2 trial, which we expect to initiate in the second quarter of this year. We look forward to fully exploring functional outcomes in the larger, placebo-controlled Part 2 of the trial.”
Part 1 of the Phase 2 trial is an open-label, dose-escalation study of ACE-083 designed to evaluate safety as well as changes in total muscle volume in up to 36 patients with FSHD. Preliminary results include data from 23 patients evaluable for magnetic resonance imaging (MRI) among two different cohorts (11 patients with tibialis anterior weakness and 12 patients with biceps brachii weakness). Each patient received ACE-083 (150 mg or 200 mg) as a unilateral intramuscular injection once every three weeks for 12 weeks. Total muscle volume changes were measured by MRI relative to baseline at 3 weeks after the last injection of ACE-083. Based on overlap in dosing on a milligram per gram muscle analysis, dose cohorts were pooled for the analyses of each muscle.
Tibialis Anterior Part 1 Cohorts (150 mg and 200 mg pooled) Preliminary Results (n=11):
The tibialis anterior (TA), which is located in the lower leg, is the main muscle responsible for ankle dorsiflexion, or the ability to lift the front of the foot when taking a step. Over 70% of FSHD patients experience tibialis anterior weakness over the course of their disease, which can lead to general decreased mobility and an increased frequency of falling.
The TA cohorts generated a mean total muscle volume increase of 12.6%.
The TA cohorts produced a mean decrease or improvement in muscle fat fraction of 5.3%
Biceps Brachii Part 1 Cohorts (150 mg and 200 mg pooled) Preliminary Results (n=12):
The biceps brachii (BB), which is located in the upper arm, is a major muscle responsible for elbow flexion, or the ability to lift the lower arm. A majority of FSHD patients experience biceps brachii weakness early in their disease, which leads to the inability to lift objects or perform other important daily activities without assistance.
The BB cohorts generated a mean total muscle volume increase of 13.2%.
The BB cohorts produced a mean decrease or improvement in muscle fat fraction of 0.6%.
In the BB cohorts, the majority of patients had less intramuscular fat at baseline relative to the patients in the TA cohorts. Patients with higher fat fraction in the BB cohorts at baseline demonstrated larger decreases in fat fraction with treatment.
“I am encouraged by the preliminary safety and tolerability results of ACE-083 in Part 1 of the trial. There are currently no FDA approved therapies for FSHD, therefore limiting our treatment of patients to supportive options such as physical therapy and bracing," said Dr. Jeffrey Statland, M.D., Associate Professor of Neurology at the University of Kansas Medical Center and the ACE-083 FSHD Phase 2 trial principal investigator. “ACE-083 is demonstrating encouraging activity in its ability to increase muscle volume, and I look forward to its advancement in Part 2 of the trial.”
Strength and Function Tests:
Strength and function tests are being explored in Part 1 to assist with the design of the randomized, double-blind, placebo-controlled Part 2 of the study. Given the lack of placebo control and small sample size of patients in Part 1, no conclusions can be made on the strength and function assessments at this time. Effects of ACE-083 on strength and function versus a placebo-control will be evaluated in Part 2 of the study.
Part 1 Preliminary Safety Results (n=25):
There were no serious adverse events reported. The most common adverse events were injection site related and grades 1-2. One patient experienced a related grade 3 non-serious adverse event of lower leg intramuscular swelling. This patient fully recovered and was discontinued from the study.
Acceleron plans to present an in-depth review of Part 1 data at a medical conference in 2018.
For additional information on this clinical trial, please visit clinicaltrials.gov, identifier NCT02927080.
ACE-083 is a therapeutic candidate, based on the naturally-occurring protein follistatin, which utilizes the “Myostatin+” approach to inhibit multiple TGF-beta ligands. It is designed to have a concentrated effect along targeted muscles to maximize growth and strength selectively in the muscles into which the drug is administered. Acceleron is developing ACE-083 for diseases such as facioscapulohumeral dystrophy (FSHD) and Charcot-Marie-Tooth (CMT) disease, in which improved muscle strength in target muscles may provide a clinical benefit and enhance quality of life.
About Facioscapulohumeral Dystrophy (FSHD)
FSHD is a rare genetic muscle disorder affecting approximately 20,000 people in the United States for which there are currently no approved treatments. The primary clinical presentation of FSHD is debilitating skeletal muscle weakness and loss. The symptoms of FSHD develop in a descending pattern, beginning with the face and upper body and progressing to the lower body in a "muscle by muscle" fashion. The disease is typically diagnosed by a characteristic pattern of muscle weakness and other clinical symptoms, as well as through genetic testing.
Acceleron is a Cambridge-based, clinical-stage biopharmaceutical company dedicated to the discovery, development, and commercialization of therapeutics to treat serious and rare diseases. The Company’s leadership in the understanding of TGF-beta biology and protein engineering generates innovative compounds that engage the body’s ability to regulate cellular growth and repair.
Acceleron focuses its research and development efforts in hematologic, neuromuscular, and pulmonary diseases. In hematology, the Company and its global collaboration partner, Celgene, are developing luspatercept for the treatment of chronic anemia in myelodysplastic syndromes, beta-thalassemia, and myelofibrosis. Acceleron is also advancing its neuromuscular franchise with two distinct Myostatin+ agents, ACE-083 and ACE-2494, and a pulmonary program with a Phase 2 trial of sotatercept planned in pulmonary arterial hypertension.
For more information, please visit www.acceleronpharma.com. Follow Acceleron on Social Media: @AcceleronPharma and LinkedIn.
Cautionary Note Regarding Forward-Looking Statements
This press release contains forward-looking statements about the Company's strategy, future plans and prospects, including statements regarding the development of the Company's compounds, the timeline for clinical development and regulatory approval of the Company’s compounds and the expected timing for reporting of data from ongoing clinical trials. The words "anticipate," "believe," "could," "estimate," "expect," “goal”, "intend," "may," "plan," "potential," "project," "should," "target," "will," "would," and similar expressions are intended to identify forward-looking statements, although not all forward-looking statements contain these identifying words.
Actual results could differ materially from those included in the forward-looking statements due to various risks and uncertainties, including, but not limited to, that preclinical testing of the Company's compounds and data from clinical trials may not be predictive of the results or success of ongoing or later clinical trials, that the development of the Company's compounds will take longer and/or cost more than planned, that the Company or its collaboration partner, Celgene, will be unable to successfully complete the clinical development of the Company’s compounds, that the Company or Celgene may be delayed in initiating, enrolling or completing any clinical trials, and that the Company's compounds will not receive regulatory approval or become commercially successful products. These and other risks and uncertainties are identified under the heading "Risk Factors" included in the Company's most recent Annual Report on Form 10-K, and other filings that the Company has made and may make with the SEC in the future.
The forward-looking statements contained in this press release are based on management’s current views, plans, estimates, assumptions and projections with respect to future events, and the Company does not undertake and specifically disclaims any obligation to update any forward-looking statements.
Todd James, IRC, (617) 649-9393
Vice President, Investor Relations and Corporate Communications
Candice Ellis, 617-649-9226
Manager, Investor Relations and Corporate Communications
Brad Miles, (646) 513-3125
Source: Acceleron Pharma