Keros Therapeutics, Inc. · NASDAQ:KROS

Keros Therapeutics — Investor Presentation (June 2021)

32 slides from Keros Therapeutics's investor presentation, Jun 22, 2021

  1. Slide 1: June 2021 Corporate Presentation

    June 2021 Corporate Presentation

  2. Slide 2: Disclaimer

    Disclaimer Statements contained in this presentation 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,” “poten

  3. Slide 3: Harnessing the Powerful Biology of the TGF-β Superfamily

    Harnessing the Powerful Biology of the TGF-β Superfamily • Clinical-stage biopharmaceutical company developing novel therapeutics that target the TGF-β superfamily • Approach validated by marketed products, InfuseTM (BMP2) for spinal fusion and Reblozyl® (modified activin receptor IIB) for treatment

  4. Slide 4: Differentiated Clinical Assets in Hematological and Musculoskeletal Disorders

    Keros is Developing Differentiated Clinical Assets in Hematological and Musculoskeletal Disorders 4* Anticipated clinical milestones are subject to the impact of COVID-19 on our business.

  5. Slide 5: KER-050

    KER-050 A novel treatment designed to address diseases arising from ineffective hematopoiesis • Myelodysplastic syndromes • Myelofibrosis 5

  6. Slide 6: Myelodysplastic Syndromes (MDS) Overview

    Myelodysplastic Syndromes (MDS) Overview *MDS Foundation • Hematologic malignancy predominantly affecting the elderly, resulting in multiple cytopenias (anemia, thrombocytopenia, neutropenia) due to ineffective hematopoiesis • 60,000-170,000 MDS patients in U.S.* • 15,000-20,000 newly diagnosed MDS

  7. Slide 7: Myelofibrosis (MF) is Characterized by Ineffective Hematopoiesis

    Myelofibrosis (MF) is Characterized by Ineffective Hematopoiesis *Gangat 2011;**Srour 2016; ***Naymagon 2017 16,000-18,500 Prevalence of MF patients in US* >3,000 New MF patients diagnosed each year** ~100 % Nearly all MF patients will become transfusion- dependent*** 51% Anemia 38% Transfusion Depe

  8. Slide 8: KER-050 is a Modified ActRII Fusion Protein

    KER-050 is a Modified ActRII Fusion Protein • Activin receptors are expressed on hematopoietic cells and modulate differentiation of precursor cells • KER-050 is a ligand trap composed of a modified extracellular domain of activin receptor IIA (ActRIIA) fused to the Fc region of human IgG • KER-050

  9. Slide 9: RKER-050 Increased Erythropoiesis and Serum Erythropoietin in Preclinical Study

    Treatment with RKER-050 Increased Erythropoiesis by Potentially Promoting Maturation at Multiple Stages and Increased Serum Erythropoietin • In a preclinical study conducted in mice, a single, subcutaneous 10 mg/kg dose of a mouse version of KER-050 (RKER-050) resulted in: • Rapid increase in RBCs •

  10. Slide 10: KER-050 Completed First-in-Human Trial

    KER-050 Completed First-in-Human Trial • First-in-human trial was designed to explore the safety, tolerability and PK in healthy volunteers with a secondary objective to evaluate changes in PD (hematology and bone biomarkers) • Observed that KER-050 drug levels were dose proportional in Part 1 of th

  11. Slide 11: KER-050 Phase 1 Trial Recapitulated Learnings from Preclinical Studies

    KER-050 Phase 1 Clinical Trial Recapitulated Learnings from Preclinical Studies • Single, subcutaneous administration of KER-050 in healthy volunteers • Observed rapid increase in red blood cell parameters is supportive of acceleration of maturation of late-stage precursors • Reticulocytes, red bloo

  12. Slide 12: KER-050 Led to Clinically Meaningful Changes in Platelets after a Single Dose

    KER-050 Treatment was Observed to Lead to Clinically Meaningful Changes in Platelets after a Single Dose Mean Change from Baseline in Platelets at Each Dose -1 2 4 7 15 21 29 -40 -20 0 20 40 60 Days Post-Dose Placebo 0.05 mg/kg 0.5 mg/kg 1.5 mg/kg 4.5 mg/kg 30 x 109 cells/L 20 x 109 cells/L Ch an ge

  13. Slide 13: KER050-MD-201 Phase 2 Trial in MDS Anemia

    KER050-MD-201 A Phase 2 Clinical Trial Of KER-050 For The Treatment Of Anemia In Patients With Very Low, Low Or Intermediate Risk Myelodysplastic Syndromes (MDS)

  14. Slide 14: Phase 2 Clinical Trial of KER-050 in MDS

    Phase 2 Clinical Trial of KER-050 in MDS • Phase 2, multicenter, open-label clinical trial in very low-, low- and intermediate-risk MDS patients • KER-050 administered once every four weeks (Q4W) for 12 weeks • Trial objectives: • Safety, tolerability and pharmacokinetics • Evaluate pharmacodynamic

  15. Slide 15: Phase 2 Trial in MDS Key Eligibility Criteria and Endpoints

    Phase 2 Clinical Trial of KER-050 in MDS Key Eligibility Criteria: • MDS with very low-, low-, or intermediate-risk disease, as classified by the International Prognostic Scoring System- Revised, including both RS positive and non-RS • ESA naïve and experienced patients are eligible • No prior treat

  16. Slide 16: Trial Status and Baseline Characteristics

    Trial Status and Baseline Characteristics • Data cut-off date: May 14, 2021 • Preliminary data presented from two lowest dose cohorts: • Cohort 1: 0.75 mg/kg Q4W for 12 weeks • Cohort 2: 1.5 mg/kg Q4W for 12 weeks • 12 patients received at least one dose of KER-050 as of the data cut-off date • 9 pa

  17. Slide 17: Safety Profile as of May 14, 2021

    Safety Profile as of May 14, 2021 • Safety Review Committee has reviewed preliminary 0.75 mg/kg (Cohort 1) and 1.5 mg/kg (Cohort 2) data • Summary of safety profile* (Cohorts 1 and 2; n=12): • No drug related serious adverse events (SAEs) • 4 treatment-emergent SAEs deemed unrelated to study drug (a

  18. Slide 18: Preliminary Results from Phase 2 Clinical Trial

    Preliminary Results from Phase 2 Clinical Trial Preliminary results*: • Consistent with the data from the Phase 1 clinical trial, increases in reticulocytes, Hgb and platelets were observed in MDS patients • 5 patients that completed 8 weeks of treatment with KER-050 as of the data cut-off date met

  19. Slide 19: Reduction in Transfusion Burden Observed

    Reduction in Transfusion Burden Observed+ +Data cut-off date: May 14, 2021 *Baseline transfusion burden over 8 weeks **Percent transfusion reduction over 8 weeks on treatment compared to baseline transfusion burden • Patients requiring transfusions at baseline (≥2 RBC units/8 weeks) that completed 8

  20. Slide 20: Summary of KER-050 Phase 2 Clinical Trial

    Summary of KER-050 Phase 2 Clinical Trial • Keros believes the initial preliminary data from this 12-week treatment Phase 2 clinical trial demonstrate proof-of-concept of KER-050 in patients with very low-, low- or intermediate-risk MDS • Data consistent with observations from the Phase 1 clinical t

  21. Slide 21: KER-047

    KER-047 A novel treatment designed to address: • Anemia resulting from iron imbalance • Iron deficiency anemia • IRIDA • Fibrodysplasia ossificans progressiva (FOP) 21

  22. Slide 22: ALK2 Regulates Hepcidin and Iron Homeostasis

    • ALK2 signaling in the liver controls hepcidin expression, a hormone that controls iron homeostasis • Excessive ALK2 signaling results in high hepcidin and a shortage of iron availability for RBC production • ALK2 signaling requires BMP ligand and the co-receptor hemojuvelin • Hepcidin expression i

  23. Slide 23: Inhibition of ALK2 Demonstrated Activity in Rodent Models of Iron Imbalance

    Inhibition of ALK2 Demonstrated Activity in Rodent Models of Iron Imbalance • ALK2 inhibition decreased hepcidin and increased serum iron in mice • In a mouse model of IRIDA, treatment with ALK2 inhibitors reduced hepcidin and ameliorated anemia • In a mouse model of chronic kidney disease, chronic

  24. Slide 24: Phase 1 Clinical Trial of KER-047 in Healthy Volunteers

    Phase 1 Clinical Trial of KER-047 in Healthy Volunteers • KER-047 is a small molecule inhibitor of the ALK2 kinase domain with low nanomolar IC50 • PK/ADME: Suitable for 1x daily oral dosing • In November 2020, Keros completed a randomized, double-blind, placebo-controlled, two-part Phase 1 clinical

  25. Slide 25: KER-047 Led to Reduced Hepcidin Levels and Increased Reticulocyte Hemoglobin

    • Consistent with ALK2 inhibition, decreases in serum hepcidin were observed in Cohorts 1 through 3 of Part of the expanded trial Phase 1 Clinical Trial: KER-047 Treatment Led to Reduced Hepcidin Levels and Increased Hemoglobin Content in Reticulocytes • An increase in reticulocyte hemoglobin was ob

  26. Slide 26: Phase 2 Trials to Provide Proof-of-Concept in IDA and IRIDA

    Phase 2 Trials to Provide Proof-of-Concept for Treatment of Anemia Resulting from Iron Imbalance, Including IDA and IRIDA • KER-047 is designed to normalize high hepcidin levels, restore serum iron and ameliorate anemia • We expect to initiate a Phase 2 clinical trial in patients with IRIDA in H2 20

  27. Slide 27: KER-012

    KER-012 A preclinical program designed to address • Bone loss disorders such as osteoporosis and osteogenesis imperfecta • Pulmonary arterial hypertension (PAH) 27

  28. Slide 28: KER-012: Preclinical Product Candidate

    KER-012: Preclinical Product Candidate • Proprietary selective activin receptor ligand trap in preclinical development for the treatment of pulmonary arterial hypertension (PAH) and bone disorders • In preclinical studies, KER-012: • Demonstrated high affinity for, and potent inhibition of, ligands

  29. Slide 29: Keros Summary

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  30. Slide 30: Keros is Positioned for Clinical and Commercial Success

    We Believe Keros is Positioned for Clinical and Commercial Success • Keros is focused on the development of novel TGF-β therapeutics • Robust biology that has been validated in the clinic • Keros is well-positioned to harness the potential of the TGF-β superfamily • ActRII program (KER-050) is in a

  31. Slide 31: Anticipated Key Milestones

    Anticipated Key Milestones* KER-050 • Announce additional data from Part 1 of Phase 2 trial in MDS End of 2021 • Initiate Phase 2 trial in myelofibrosis Q3 2021 (initial data 2022) KER-047 • Initiate Phase 2 trial in IDA H2 2021 (initial data 2022) • Initiate Phase 2 trial in IRIDA H2 2021 (initial

  32. Slide 32: Thank You

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