Delaware (State or other jurisdiction of incorporation) | 001-36065 (Commission File Number) | 27-0072226 (I.R.S. Employer Identification Number) | ||
128 Sidney Street Cambridge, MA (Address of principal executive offices) | 02139 (Zip Code) |
Exhibit Number | Description of Exhibit | |
99.1 | Press release of Acceleron Pharma Inc. and Celgene Corporation dated December 4, 2016. | |
99.2 | Press release of Acceleron Pharma Inc. and Celgene Corporation dated December 5, 2016. | |
99.3 | Press release of Acceleron Pharma Inc. and Celgene Corporation dated December 5, 2016. |
ACCELERON PHARMA INC. | ||
By: | /s/ John D. Quisel, J.D., Ph.D. | |
John D. Quisel, J.D., Ph.D. | ||
Senior Vice President and General Counsel | ||
Date: December 7, 2016 |
Transfusion Burden | IWG HI-E, n/N (%) | RBC-TI, n/N (%) | ||
Base N=64 | Extension N=42 | Base N=49 | Extension N=28 | |
All | 12/20 (60%) | 13/16 (81%) | 9/12 (75%) | 8/10 (80%) |
Low Transfusion Burden | 6/13 (46%) | 8/11 (73%) | 5/5 (100%) | 5/5 (100%) |
High Transfusion Burden | 6/7 (86%) | 5/5 (100%) | 4/7 (57%) | 3/5 (60%) |
• | In patients with EPO levels < 200, response rates were similar in both RS+ and RS- patients |
• | In the patients with EPO levels ≥ 200 to ≤ 500, luspatercept response rates remained encouraging in those patients who are RS+ |
Baseline EPO (U/L) | RS Status | IWG HI-E, n/N (%) | RBC-TI, n/N (%) | ||
Base N=64* | Extension N=42* | Base N=49* | Extension N=28* | ||
< 200 | RS+ | 18/29 (62%) | 19/23 (83%) | 13/19 (68%) | 10/14 (71%) |
RS- | 2/5 (40%) | 3/3 (100%) | 1/4 (25%) | 1/2 (50%) | |
≥ 200 to ≤ 500 | RS+ | 5/11 (46%) | 7/8 (88%) | 3/9 (33%) | 3/5 (60%) |
RS- | 0/3 (0%) | 0/1 (0%) | 2/2 (100%) | 1/1 (100%) |
• | The majority of adverse events (AEs) were grade 1 or 2 |
• | There were four grade 3/serious AEs possibly or probably related to study drug as of November 28, 2016: blast cell count increase, myalgia, worsening of general condition, progression to AML |
• | Adverse events at least possibly related to study drug that occurred in at least 2 patients during studies were diarrhea, fatigue, headache, hypertension, arthralgia, bone pain, injection site erythema, myalgia and peripheral edema. |
• | 19 patients were enrolled and treated with sotatercept (12 patients at 0.75 mg/kg and 7 at 1 mg/kg) and 14 of these patients have received at least 5 doses of sotatercept and are evaluable for response |
• | 36% (5/14) of the evaluable patients achieved an anemia response, defined as a composite of RBC-transfusion-independence and hemoglobin response (increase of ≥1.5 g/dL from baseline on every determination consecutively over ≥84 days without RBC transfusions). |
• | Most adverse events were grades 1 or 2. |
• | Adverse events at least possibly related to study drug that occurred include grade 3 hypertension leading to discontinuation, grade 1 myalgia, bone pain, pain in extremity and injection site reaction. |
• | 13 patients have discontinued from the study: 5 due to no response, 2 proceeded to stem cell transplantation, 2 had MF progression, 1 transformed to AML, 1 each withdrew consent, had unrelated medical problems and hypertension |
RBC transfusion reduction over any 12 weeks versus 12 weeks pre-treatment | Response rate (% of patients) | |
3-month base study (n=31) | Long-term extension study (n=24) | |
≥ 20% | 81% (25/31) | 96% (23/24) |
≥ 33% | 71% (22/31) | 83% (20/24) |
≥ 50% | 55% (17/31) | 71% (17/24) |
Hemoglobin (Hb) response over any 12 weeks versus 12 weeks pre-treatment | Response rate (% of patients) in patients treated with ≥ 0.6 mg/kg | |
3-month base study (n=21) | Long-term extension study (n=27) | |
Increase in mean Hb ≥ 1.0 g/dL | 62% (14/21) | 78% (21/27) |
Increase in mean Hb ≥ 1.5 g/dL | 33% (7/21) | 52% (14/27) |
• | There were no related serious adverse events and related grade 3 adverse events included: bone pain (n=2 base, n=1 extension), asthenia (n=2 base) and headache (n=1 extension) |
• | The most common related adverse events (all grades) were bone pain, myalgia, headache, musculoskeletal pain, arthralgia, and injection site pain. |
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
4T%JW ]O#I