KROS Keros Therapeutics Inc.

57.55
-4.15  -7%
Previous Close 61.7
Open 61.7
52 Week Low 19.1
52 Week High 88.8
Market Cap $1,333,914,100
Shares 23,178,351
Float 10,187,880
Enterprise Value $1,384,674,639
Volume 111,547
Av. Daily Volume 154,939
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Upcoming Catalysts

Drug Stage Catalyst Date
KER-050
Myelodysplastic syndromes
Phase 2
Phase 2
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Drug Pipeline

Drug Stage Notes
KER-047
Anemia
Phase 1
Phase 1
Phase 1 data presented at ASH December 5, 2020.
KER-012
Osteoporosis
Phase 1
Phase 1
Phase 1 trial to be initiated 2H 2021.

Latest News

  1. LEXINGTON, Mass., March 02, 2021 (GLOBE NEWSWIRE) -- Keros Therapeutics, Inc. ("Keros") (NASDAQ:KROS), a clinical-stage biopharmaceutical company focused on the discovery, development and commercialization of novel treatments for patients suffering from hematological and musculoskeletal disorders with high unmet medical need, today announced that Keros President and Chief Executive Officer Jasbir S. Seehra, Ph.D. will present at the H.C. Wainwright Global Life Sciences 2021 Virtual Conference.

    The presentation will be available on Tuesday, March 9 starting at 7:00 am ET at https://journey.ct.events/view/0765d266-9f83-4bfb-b12e-dadbd0da9d03 and archived in the Investors section of the Keros website at https://ir.kerostx.com/. A replay will…

    LEXINGTON, Mass., March 02, 2021 (GLOBE NEWSWIRE) -- Keros Therapeutics, Inc. ("Keros") (NASDAQ:KROS), a clinical-stage biopharmaceutical company focused on the discovery, development and commercialization of novel treatments for patients suffering from hematological and musculoskeletal disorders with high unmet medical need, today announced that Keros President and Chief Executive Officer Jasbir S. Seehra, Ph.D. will present at the H.C. Wainwright Global Life Sciences 2021 Virtual Conference.

    The presentation will be available on Tuesday, March 9 starting at 7:00 am ET at https://journey.ct.events/view/0765d266-9f83-4bfb-b12e-dadbd0da9d03 and archived in the Investors section of the Keros website at https://ir.kerostx.com/. A replay will be available for 90 days following the conclusion of the event.

    About Keros Therapeutics, Inc.

    Keros is a clinical-stage biopharmaceutical company focused on the discovery, development and commercialization of novel treatments for patients suffering from hematologic and musculoskeletal disorders with high unmet medical need. Keros is a leader in understanding the role of the transforming growth factor-Beta, or TGF-ß, family of proteins, which are master regulators of red blood cell and platelet production as well as of the growth, repair and maintenance of muscle and bone. Keros' lead protein therapeutic product candidate, KER-050, is being developed for the treatment of low blood cell counts, or cytopenias, including anemia and thrombocytopenia, in patients with myelodysplastic syndromes and in patients with myelofibrosis. Keros' lead small molecule product candidate, KER-047, is being developed for the treatment of anemia resulting from iron imbalance, as well as for the treatment of fibrodysplasia ossificans progressiva. Keros' third product candidate, KER-012, is being developed for the treatment of disorders associated with bone loss, such as osteoporosis and osteogenesis imperfecta, and for the treatment of pulmonary arterial hypertension.

    Investor Contact:

    Julia Balanova



    646-378-2936

     



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  2. LEXINGTON, Mass., Feb. 17, 2021 (GLOBE NEWSWIRE) -- Keros Therapeutics, Inc. ("Keros") (NASDAQ:KROS), a clinical-stage biopharmaceutical company focused on the discovery, development and commercialization of novel treatments for patients suffering from hematological and musculoskeletal disorders with high unmet medical need, today announced that Keros's President and Chief Executive Officer Jasbir S. Seehra, Ph.D. will present at the 10th Annual SVB Leerink Global Healthcare Conference on Wednesday, February 24th at 1:40 pm ET.

    The fireside chat presentation will be webcast live at https://wsw.com/webcast/svbleerink47/kros/2684928 and archived in the Investors section of the Keros website at https://ir.kerostx.com/. A replay will be available…

    LEXINGTON, Mass., Feb. 17, 2021 (GLOBE NEWSWIRE) -- Keros Therapeutics, Inc. ("Keros") (NASDAQ:KROS), a clinical-stage biopharmaceutical company focused on the discovery, development and commercialization of novel treatments for patients suffering from hematological and musculoskeletal disorders with high unmet medical need, today announced that Keros's President and Chief Executive Officer Jasbir S. Seehra, Ph.D. will present at the 10th Annual SVB Leerink Global Healthcare Conference on Wednesday, February 24th at 1:40 pm ET.

    The fireside chat presentation will be webcast live at https://wsw.com/webcast/svbleerink47/kros/2684928 and archived in the Investors section of the Keros website at https://ir.kerostx.com/. A replay will be available for 90 days following the conclusion of the event.

    About Keros Therapeutics, Inc.

    Keros is a clinical-stage biopharmaceutical company focused on the discovery, development and commercialization of novel treatments for patients suffering from hematologic and musculoskeletal disorders with high unmet medical need. Keros is a leader in understanding the role of the transforming growth factor-Beta, or TGF-ß, family of proteins, which are master regulators of red blood cell and platelet production as well as of the growth, repair and maintenance of muscle and bone. Keros' lead protein therapeutic product candidate, KER-050, is being developed for the treatment of low blood cell counts, or cytopenias, including anemia and thrombocytopenia, in patients with myelodysplastic syndromes and in patients with myelofibrosis. Keros' lead small molecule product candidate, KER-047, is being developed for the treatment of anemia resulting from iron imbalance, as well as for the treatment of fibrodysplasia ossificans progressiva. Keros' third product candidate, KER-012, is being developed for the treatment of disorders associated with bone loss, such as osteoporosis and osteogenesis imperfecta, and for the treatment of pulmonary arterial hypertension.

    Investor Contact:

    Julia Balanova



    646-378-2936



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  3. LEXINGTON, Mass., Dec. 21, 2020 (GLOBE NEWSWIRE) -- Keros Therapeutics, Inc. ("Keros") (NASDAQ:KROS), a clinical-stage biopharmaceutical company focused on the discovery, development and commercialization of novel treatments for patients suffering from hematological and musculoskeletal disorders with high unmet medical need, today announced that is has been selected for addition to the NASDAQ Biotechnology Index® (NASDAQ:NBI). Keros' addition to the NBI will become effective prior to market open on Monday, December 21, 2020.

    The NASDAQ Biotechnology Index is designed to track the performance of a set of securities listed on The Nasdaq Stock Market® that are classified as either biotechnology or pharmaceutical according to the Industry Classification…

    LEXINGTON, Mass., Dec. 21, 2020 (GLOBE NEWSWIRE) -- Keros Therapeutics, Inc. ("Keros") (NASDAQ:KROS), a clinical-stage biopharmaceutical company focused on the discovery, development and commercialization of novel treatments for patients suffering from hematological and musculoskeletal disorders with high unmet medical need, today announced that is has been selected for addition to the NASDAQ Biotechnology Index® (NASDAQ:NBI). Keros' addition to the NBI will become effective prior to market open on Monday, December 21, 2020.

    The NASDAQ Biotechnology Index is designed to track the performance of a set of securities listed on The Nasdaq Stock Market® that are classified as either biotechnology or pharmaceutical according to the Industry Classification Benchmark. All securities in the index are listed on the Nasdaq Global Market or the Nasdaq Global Select Market. The NBI is re-ranked each year and is calculated under a modified capitalization-weighted methodology. More information about the NBI, including eligibility criteria, can be found at www.nasdaq.com.

    About Keros Therapeutics, Inc.

    Keros is a clinical-stage biopharmaceutical company focused on the discovery, development and commercialization of novel treatments for patients suffering from hematologic and musculoskeletal disorders with high unmet medical need. Keros is a leader in understanding the role of the Transforming Growth Factor-Beta family of proteins, which are master regulators of red blood cell and platelet production as well as of the growth, repair and maintenance of muscle and bone. Keros' lead protein therapeutic product candidate, KER-050, is being developed for the treatment of low blood cell counts, or cytopenias, including anemia and thrombocytopenia, in patients with myelodysplastic syndromes and in patients with myelofibrosis. Keros' lead small molecule product candidate, KER-047, is being developed for the treatment of anemia resulting from iron imbalance, as well as for the treatment of fibrodysplasia ossificans progressiva. Keros' third product candidate, KER-012, is being developed for the treatment of disorders associated with bone loss, such as osteoporosis and osteogenesis imperfecta, and for the treatment of pulmonary arterial hypertension.

    Cautionary Note Regarding Forward-Looking Statements

    Statements contained in this press release regarding matters that are not historical facts are "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995, as amended. Words such as "anticipates," "believes," "expects," "intends," "plans," "potential," "projects," "would" and "future" or similar expressions are intended to identify forward-looking statements. Examples of these forward-looking statements include statements concerning: the Company's anticipated addition to the NASDAQ Biotechnology Index® and the timing of such inclusion. Because such statements are subject to risks and uncertainties, actual results may differ materially from those expressed or implied by such forward-looking statements. Many factors could cause the actual results, performance or achievements that may be expressed or implied by such forward-looking statements to vary from those described herein should one or more of these risks or uncertainties materialize, including those risk factors discussed or referred to in Keros' filings with the Securities and Exchange Commission ("SEC"), including the "Risk Factors" section of the Company's Quarterly Report on Form 10-Q, filed with the SEC on November 10, 2020, and its other documents subsequently filed with or furnished to the SEC. All forward-looking statements contained in this press release speak only as of the date on which they were made. Except to the extent required by law, Keros undertakes no obligation to update such statements to reflect events that occur or circumstances that exist after the date on which they were made.

    Investor Contact:

    Julia Balanova

     

    646-378-2936



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  4. LEXINGTON, Mass., Dec. 17, 2020 (GLOBE NEWSWIRE) -- Keros Therapeutics, Inc. ("Keros" or the "Company") (NASDAQ:KROS), a clinical-stage biopharmaceutical company focused on the discovery, development and commercialization of novel treatments for patients suffering from hematological and musculoskeletal disorders with high unmet medical need, today announced that it appointed Mary Ann Gray, Ph.D., to its Board of Directors.

    "We are delighted to welcome Dr. Gray to Keros' Board of Directors," said President and Chief Executive Officer Jasbir Seehra, Ph.D. "Her deep experience guiding both growing and commercial-stage companies as a board member, coupled with her scientific and financial acumen, will be a tremendous asset as we continue…

    LEXINGTON, Mass., Dec. 17, 2020 (GLOBE NEWSWIRE) -- Keros Therapeutics, Inc. ("Keros" or the "Company") (NASDAQ:KROS), a clinical-stage biopharmaceutical company focused on the discovery, development and commercialization of novel treatments for patients suffering from hematological and musculoskeletal disorders with high unmet medical need, today announced that it appointed Mary Ann Gray, Ph.D., to its Board of Directors.

    "We are delighted to welcome Dr. Gray to Keros' Board of Directors," said President and Chief Executive Officer Jasbir Seehra, Ph.D. "Her deep experience guiding both growing and commercial-stage companies as a board member, coupled with her scientific and financial acumen, will be a tremendous asset as we continue to further advance multiple assets in the clinic."

    Dr. Gray is President of Gray Strategic Advisors, LLC, a biotechnology strategic planning and advisory firm. Previously, she served as Senior Analyst and Portfolio Manager of Federated Kaufmann Fund, where she focused on both public and private healthcare investments. Prior to Federated Kaufmann Fund, she served as a biotechnology equity research analyst at multiple firms. Earlier in her career, she worked as a senior scientist both at Schering Plough Research and NeoRx Corporation. Dr. Gray currently serves on the boards of BioAtla, Inc., Sarepta Therapeutics, Inc., Seneca Biopharmaceuticals, Inc. and Rapt Therapeutics, Inc. and previously served on the board of many public and private biotechnology companies.

    Dr. Gray holds a B.S. from the University of South Carolina, a Ph.D. in pharmacology from the University of Vermont, and completed her post-doctoral work at Northwestern University Medical School and at the Yale University School of Medicine.

    Concurrent with Dr. Gray joining Keros' Board of Directors, the Company also announced that Alon Lazarus will be stepping down as a director of the Company. Dr. Lazarus has served on Keros' Board of Directors since April 2016. Dr. Seehra commented, "On behalf of the Board and Keros' executive team, I would like to thank Alon for the service he has provided to the company and wish him well in any and all future endeavors."

    About Keros Therapeutics, Inc.

    Keros is a clinical-stage biopharmaceutical company focused on the discovery, development and commercialization of novel treatments for patients suffering from hematologic and musculoskeletal disorders with high unmet medical need. Keros is a leader in understanding the role of the Transforming Growth Factor-Beta family of proteins, which are master regulators of red blood cell and platelet production as well as of the growth, repair and maintenance of muscle and bone. Keros' lead protein therapeutic product candidate, KER-050, is being developed for the treatment of low blood cell counts, or cytopenias, including anemia and thrombocytopenia, in patients with myelodysplastic syndromes and in patients with myelofibrosis. Keros' lead small molecule product candidate, KER-047, is being developed for the treatment of anemia resulting from iron imbalance, as well as for the treatment of fibrodysplasia ossificans progressiva. Keros' third product candidate, KER-012, is being developed for the treatment of disorders associated with bone loss, such as osteoporosis and osteogenesis imperfecta, and for the treatment of pulmonary arterial hypertension.

    Investor Contact:

    Julia Balanova 



    646-378-2936



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    • Presentation highlights data from Keros' Phase 1 clinical trial of KER-047, which demonstrated robust and sustained dose-related increases in serum iron and transferrin saturation that were associated with decreases in ferritin and hepcidin.
    • Preclinical presentation demonstrates that inhibition of activin receptor-like kinase-2 ("ALK2") signaling through both small molecule and biologic approaches has potentially positive effects on hepcidin-mediated iron deficiency.
    • Additional preclinical presentations demonstrate that KER-050 potentially works at multiple stages of erythroid differentiation and resolved anemia in multiple preclinical models.

    LEXINGTON, Mass., Dec. 07, 2020 (GLOBE NEWSWIRE) -- Keros Therapeutics, Inc. ("Keros") (NASDAQ:KROS

    • Presentation highlights data from Keros' Phase 1 clinical trial of KER-047, which demonstrated robust and sustained dose-related increases in serum iron and transferrin saturation that were associated with decreases in ferritin and hepcidin.
    • Preclinical presentation demonstrates that inhibition of activin receptor-like kinase-2 ("ALK2") signaling through both small molecule and biologic approaches has potentially positive effects on hepcidin-mediated iron deficiency.
    • Additional preclinical presentations demonstrate that KER-050 potentially works at multiple stages of erythroid differentiation and resolved anemia in multiple preclinical models.

    LEXINGTON, Mass., Dec. 07, 2020 (GLOBE NEWSWIRE) -- Keros Therapeutics, Inc. ("Keros") (NASDAQ:KROS), a clinical-stage biopharmaceutical company focused on the discovery, development and commercialization of novel treatments for patients suffering from hematological and musculoskeletal disorders with high unmet medical need, today announced that it presented data from its Phase 1 clinical trial evaluating the safety, tolerability, pharmacokinetics and pharmacodynamic effects of ascending dose levels of KER-047 in healthy volunteers and preclinical data evaluating the role of ALK2 inhibition in regulating hepcidin and serum iron at the virtual 62nd American Society of Hematology Annual Meeting and Exposition ("ASH") held December 5 through 8, 2020. In addition, Keros announced preclinical data on the differentiated mechanism of action of KER-050 and its activity in multiple anemia models.

    "We were pleased to present complete data from all cohorts of our Phase 1 first-in-human clinical trial of KER-047, following our initial data announcement on August 4, 2020.   In addition to characterizing the tolerability profile of KER-047 in healthy volunteers across increasing doses and after multiple administrations, we observed rapid, robust and sustained dose-related increases in serum iron and transferrin saturation that were associated with decreases in ferritin and hepcidin. Reticulocyte hemoglobin was also observed to increase, which we believe suggests that the iron mobilized with treatment was incorporated into hemoglobin. Based on these findings, we believe that the differentiated pharmacologic effect of KER-047 on hepcidin and iron mobilization has the potential to treat diseases arising from iron imbalance," said Jasbir S. Seehra, Ph.D., President and Chief Executive Officer of Keros. "In addition, the data from our preclinical studies of KER-050 further elucidate its differentiated mechanism of action and ability to potentially target multiple stages along the spectrum of erythropoiesis and resolve anemia due to multiple causes. These data further support our belief that KER-050 can potentially treat diseases that cause cytopenias due to ineffective hematopoiesis, including myelodysplastic syndromes ("MDS") and myelofibrosis."

    Clinical Data Highlight the Effects of KER-047 on Iron Mobilization

    • Administration of KER-047, a Novel ALK2 Inhibitor, Elicited Robust and Sustained Increases in Serum Iron in Healthy Participants - Publication Number: 769.

    In Part 1 of the Phase 1 first-in-human clinical trial, two formulations of KER-047 were evaluated in single ascending oral doses, ranging from 1 mg to 300 mg of a capsule formulation, and 30 mg to 450 mg of a liquid formulation or placebo. In Part 2 of this trial, the liquid formulation was evaluated in multiple ascending doses (50 mg, 100 mg, 200 mg and 350 mg) of KER-047 or placebo, administered daily for 7 to 14 days.

    In healthy participants, administration of KER-047 elicited rapid, robust and sustained dose-related increases in serum iron and transferrin saturation that were associated with decreases in ferritin, an effect which is consistent with mobilization of iron stores [Figures 1, 2 and 3].Keros also observed decreases in serum hepcidin in Cohorts 1 through 3 of Part 2 of this trial (50 mg, 100 mg and 200 mg dose groups) [Figure 4]. These data were not collected in Part 1 of this trial or in Cohort 4 of Part 2 of this trial (350 mg dose group).

    Additionally, Keros observed a decrease in hepcidin as early as four hours after administration of the first dose in Cohort 5 of Part 2 of this trial (100 mg dose group).

    Keros also observed an increase in reticulocyte hemoglobin in Cohorts 1 through 4 of Part 2 of this trial, starting on Day 4 of treatment [Figure 5].

    We believe the observed decrease in ferritin and hepcidin coupled with the observed increases in reticulocyte hemoglobin content are indicative of increased iron mobilization, resulting in increased iron incorporation into hemoglobin.

    The tolerability profile of KER-047 in healthy participants was characterized in this Phase 1 trial. There were no serious adverse events ("SAEs") in either part of the trial, and the majority of adverse events ("AEs") observed were mild or moderate in severity.  

    In Part 2 of this trial, 10 of 40 (25%) participants administered KER-047 and 1 of 11 (9.1%) participants administered placebo discontinued study drug due to AEs. AEs that led to study drug discontinuation in three or more participants in the KER-047 groups included lymphopenia and chills.   Details on AEs were as follows:

    • Severe AEs were reported in 1 of 8 (12.5%) participants in the 350 mg and 100 mg (Cohort 5) dose groups.
    • AEs reported in two or more participants and more common in the KER-047 groups than placebo were: abdominal discomfort, abdominal pain (upper), chills, decreased appetite, diarrhea, dizziness, fatigue, gastroenteritis, headache, lymphopenia, myalgia, nausea, neutropenia, pyrexia, rhinorrhea, tonsilitis, vomiting.
    • Lymphopenia, which Keros believes is consistent with KER-047's mechanism of action, was observed after multiple doses that was reversible after discontinuation of study drug.

    Photos accompanying this announcement are available at

    https://www.globenewswire.com/NewsRoom/AttachmentNg/030e90e0-609b-4ec7-988c-759ce3ae4486

    https://www.globenewswire.com/NewsRoom/AttachmentNg/1d3af6eb-127a-40f7-b894-f93ec20e39b3

    https://www.globenewswire.com/NewsRoom/AttachmentNg/126f6ad1-d11c-438d-a7b2-ee39a8d3b0c8

    https://www.globenewswire.com/NewsRoom/AttachmentNg/a7d6cde6-40f5-4820-97ea-84780e65f8f3

    https://www.globenewswire.com/NewsRoom/AttachmentNg/fd4f5f2d-36f8-4776-ba5b-84619dfd6772

    Multiple Modalities of ALK2 Inhibition Reduced Hepcidin and Resolved Anemia in IRIDA Model

    • Selective Inhibition of ALK2 Signaling Suppresses Serum Hepcidin and Increases Serum Iron Publication Number: 771

    In an siRNA-based model of iron-refractory iron deficiency anemia ("IRIDA"), administration of either KTI-2338, a small molecule ALK2 kinase inhibitor, or KTI-A2.0MAb, a novel neutralizing ALK2 antibody, resulted in the rescue of hemoglobin ("HGB"), hematocrit ("HCT"), serum hepcidin and serum iron from the disease state. Following treatment, HGB, HCT and serum iron were increased and serum hepcidin was decreased in treated groups compared to control cohorts receiving vehicle.

    These data further show that inhibition of ALK2 signaling via either modality in anemic mice potentially contributes to a decrease in serum hepcidin and an increase in serum iron levels, which we believe suggests that ALK2 signaling is an integral part of hepcidin-mediated iron mobilization, and illustrate the potential therapeutic benefit of ALK2 inhibition (with a small molecule inhibitor or a neutralizing monoclonal antibody) in anemia of high hepcidin, including IRIDA and anemia of inflammation.

    Preclinical Studies of KER-050 Demonstrated Effects on Multiple Stages in the Erythropoiesis Cascade and in Multiple Models of Anemia

    • KER-050, a Modified ActRIIA Ligand Trap, Alleviates Cytopenia Arising from Multiple Etiologies Presentation Number: 2582.

    Administration of a research form of KER-050 ("RKER-050") was shown to alleviate cytopenias caused by multiple conditions:

    • Aged (2-year-old), vehicle-treated mice had significantly lower red blood cells ("RBCs"), HGB and HCT (-14.0%, -13.5%, -10.9%, respectively) relative to 11-week-old young vehicle-treated mice after six weeks of twice weekly treatment. However, aged mice treated with RKER-050 had higher RBCs, HGB and HCT (+12.3%, +10.0%, +9.1%, respectively) compared to aged mice receiving vehicle, with levels indistinguishable from those of young controls.
    • Anemic NUP98-HOXD13 mice (a murine model of MDS) dosed twice weekly with RKER-050 for six weeks had increases in RBCs, HGB and HCT (+10.9%, +11.2%, + 9.8%, respectively), achieving values comparable to the wild-type control animal of the same age, while vehicle-treated MDS mice continued to have significantly reduced RBCs, HGB and HCT.
    • In Sprague-Dawley rats, where anemia was induced by bleeding 20% of total blood volume, treatment with RKER-050 twice weekly showed early and robust increases in both RBCs and HGB that exceeded baseline levels, whereas decreased RBCs and HGB in the vehicle-treated group persisted longer. RKER-050 treatment also resulted in an increase in platelet count at Day 3 post-phlebotomy, which remained elevated at Day 6. 



    • KER-050, a Novel Inhibitor of TGF-β Superfamily Signaling, Induces Red Blood Cell Production by Promoting Multiple Stages of Erythroid Differentiation Presentation Number: 2736. 

    Mice treated with a single 10 mg/kg dose of RKER-050 had increased RBCs, HGB and HCT (+8%, +9%, +7%, respectively) 12 hours after administration compared to vehicle-treated mice. This effect was further increased on Day 7 and persisted to at least Day 14. The following was also observed:

    • A reduction in the number of enucleated erythroid cells in the bone marrow and a parallel increase in the percent of immature reticulocytes ("RET") in peripheral blood, suggesting an increased outflux of RET into circulation.
    • Increases in colony forming unit-erythroid progenitors, which is consistent with an effect on early stages of erythropoiesis.
    • Changes in polyerythrochromatic/early orthochromatic erythroid precursors and late orthochromatic erythroblasts/RETs, which is consistent with progression of cells through erythropoiesis.
    • A greater than two-fold increase in serum levels of erythropoietin ("Epo") at Days 4, 7 and 14.

    Overall, we believe these data demonstrate that KER-050 stimulates terminal maturation of late-stage

    erythroid precursors, expands the early-stage precursor population and progresses precursors

    through erythropoiesis. Additionally, KER-050 was observed to increase Epo concurrent with elevated RBCs.

    About KER-050

    Keros' lead protein therapeutic product candidate, KER-050, is an engineered ligand trap comprised of a modified ligand-binding domain of the Transforming Growth Factor-Beta receptor known as activin receptor type IIA that is fused to the portion of the human antibody known as the Fc domain. KER-050 is being developed for the treatment of low blood cell counts, or cytopenias, including anemia and thrombocytopenia, in patients with MDS and in patients with myelofibrosis. Keros has initiated a Phase 2 clinical trial in patients with MDS evaluating KER-050 for the treatment of cytopenias, including anemia and thrombocytopenia, and expects to report initial data from Part 1 of this trial in mid-2021. Keros also plans to initiate a Phase 2 clinical trial evaluating KER-050 for the treatment of patients with myelofibrosis-associated cytopenias in 2021.

    About KER-047

    Keros' lead small molecule product candidate, KER-047, is designed to selectively and potently inhibit ALK2, a Transforming Growth Factor-Beta receptor. KER-047 is being developed for the treatment of anemia resulting from iron imbalance, as well as for the treatment of fibrodysplasia ossificans progressiva, a rare musculoskeletal disorder. Keros expects to commence two Phase 2 clinical trials of KER-047, one in patients with iron deficiency anemia and one in patients with IRIDA, in 2021.

    About Keros Therapeutics, Inc.

    Keros is a clinical-stage biopharmaceutical company focused on the discovery, development and commercialization of novel treatments for patients suffering from hematologic and musculoskeletal disorders with high unmet medical need. Keros is a leader in understanding the role of the Transforming Growth Factor-Beta family of proteins, which are master regulators of red blood cell and platelet production as well as of the growth, repair and maintenance of muscle and bone. Keros' lead protein therapeutic product candidate, KER-050, is being developed for the treatment of low blood cell counts, or cytopenias, including anemia and thrombocytopenia, in patients with myelodysplastic syndromes and in patients with myelofibrosis. Keros' lead small molecule product candidate, KER-047, is being developed for the treatment of anemia resulting from iron imbalance, as well as for the treatment of fibrodysplasia ossificans progressiva. Keros' third product candidate, KER-012, is being developed for the treatment of disorders associated with bone loss, such as osteoporosis and osteogenesis imperfecta, and for the treatment of pulmonary arterial hypertension.

    Cautionary Note Regarding Forward-Looking Statements

    Statements contained in this press release regarding matters that are not historical facts are "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995, as amended. Words such as "anticipates," "believes," "expects," "intends," "plans," "potential," "projects," "would" and "future" or similar expressions are intended to identify forward-looking statements. Examples of these forward-looking statements include statements concerning: Keros' expectations regarding its growth, strategy, progress and timing of its clinical trials for KER-050 and KER-047; the potential of KER-050 to treat multiple cytopenias in diseases of ineffective hematopoiesis; the potential of KER-047 to treat diseases arising from iron imbalance; and the potential of ALK2 inhibition to treat IRIDA and other hepcidin-mediated anemias. Because such statements are subject to risks and uncertainties, actual results may differ materially from those expressed or implied by such forward-looking statements. These risks and uncertainties include, among others: Keros' limited operating history and historical losses; Keros' ability to raise additional funding to complete the development and any commercialization of its product candidates; Keros' dependence on the success of its lead product candidates, KER-050 and KER-047; that Keros may be delayed in initiating, enrolling or completing any clinical trials; competition from third parties that are developing products for similar uses; Keros' ability to obtain, maintain and protect its intellectual property; Keros' dependence on third parties in connection with manufacturing, clinical trials and pre-clinical studies; and risks relating to the impact on our business of the COVID-19 pandemic or similar public health crises.

    These and other risks are described more fully in Keros' filings with the Securities and Exchange Commission ("SEC"), including the "Risk Factors" section of the Company's Quarterly Report on Form 10-Q, filed with the SEC on November 10, 2020, and its other documents subsequently filed with or furnished to the SEC. All forward-looking statements contained in this press release speak only as of the date on which they were made. Except to the extent required by law, Keros undertakes no obligation to update such statements to reflect events that occur or circumstances that exist after the date on which they were made.

    Investor Contact:

    Julia Balanova



    646-378-2936 



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