UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
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FORM 8-K
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CURRENT REPORT
Pursuant to Section 13 or 15(d)
of the Securities Exchange Act of 1934
Date of Report (Date of earliest event reported): June 1, 2021
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Foghorn Therapeutics Inc.
(Exact name of registrant as specified in its charter)
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| Delaware | 001-39634 | 47-5271393 | ||||||||||||
| (State or other jurisdiction of incorporation) | (Commission File Number) | (IRS Employer Identification No.) | ||||||||||||
500 Technology Square, Ste 700 Cambridge, MA | 02139 | |||||||
| (Address of principal executive offices) | (Zip Code) | |||||||
(Registrant’s telephone number, including area code): (617) 245-0399
Not Applicable
(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:
| ☐ | Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) | ||||
| ☐ | Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) | ||||
| ☐ | Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) | ||||
| ☐ | Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) | ||||
Securities registered pursuant to Section 12(b) of the Act:
| Title of each class | Trading Symbol(s) | Name of each exchange on which registered | ||||||||||||
| Common Stock, $0.0001 par value per share | FHTX | The Nasdaq Global Market | ||||||||||||
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 ☒
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. ☐
Item 7.01 Regulation FD Disclosure.
Foghorn Therapeutics Inc. (the “Company”) is furnishing as Exhibit 99.1 to this Current Report on Form 8-K a presentation, dated June 1, 2021, which the Company intends to use at the Jefferies Healthcare Conference and from time to time thereafter in meetings with or presentations to investors.
The information in this Item 7.01 (including 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 otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as expressly set forth by specific reference in such filing.
Item 9.01 Financial Statements and Exhibits.
(d) Exhibits
| Exhibit No. | Description | ||||
| 99.1 | |||||
SIGNATURES
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.
FOGHORN THERAPEUTICS INC. | ||||||||
| By: | /s/ Allan Reine | |||||||
| Allan Reine, M.D. | ||||||||
| Chief Financial Officer | ||||||||
Date: June 1, 2021
Targeting the Chromatin Regulatory System Broadening the Impact of Precision Medicines for Oncology and Other Diseases June 2021
Disclaimer, Confidentiality, and Forward-Looking StatementsThis presentation contains forward-looking statements. All statements other than statements of historical facts contained in this presentation are forward-looking statements. In some cases, you can identify forward-looking statements by terms such as “may,” “will,” “should,” “expect,” “plan,” “anticipate,” “could,” “intend,” “target,” “project,” “contemplate,” “believe,” “estimate,” “predict,” “potential” or “continue” or the negative of these terms or other similar expressions, although not all forward-looking statements contain these words. Forward-looking statements include, but are not limited to, statements concerning: the initiation, timing, progress and results of our research and development programs and preclinical and clinical trials, our ability to advance product candidates that we may develop and successfully complete preclinical and clinical studies; our ability to leverage our initial programs to develop additional product candidates using our Gene Traffic Control Platform; the impact of the COVID-19 pandemic in our and our collaborators’ business operations, including our research and development programs and preclinical studies; developments related to our competitors and our industry; our ability to expand the target populations of our programs and the availability of patients for clinical testing; our ability to obtain regulatory approval for FHD-286, FHD-609 and any future product candidates from the FDA and other regulatory authorities; our ability to identify and enter into future license agreements and collaborations; our ability to continue to rely on our CDMOs and CROs for our manufacturing and research needs; regulatory developments in the United States and foreign countries; our ability to attract and retain key scientific and management personnel; the scope of protection we are able to establish, maintain and enforce for intellectual property rights covering FHD-286 and FHD-609, our future products and our Gene Traffic Control Platform; and our use of proceeds from our initial public offering, estimates of our expenses, capital requirements and needs for additional financing. Any forward-looking statements represent the Company’s views only as of today and should not be relied upon as representing its views as of any subsequent date. The Company explicitly disclaims any obligation to update any forward-looking statements. The Company’s business is subject to substantial risks and uncertainties. Forward-Looking Statements
The Chromatin Regulatory System: The Next Wave of Cancer Therapies 3 Cytotoxics Targeted Antibodies IO / Cell Therapy Medicines targeting breakdowns in the chromatin regulatory system Cancer is one of the leading causes of death worldwide 1950s – 1960s Kinases 1990s 2000s 2010s The Future
Dysregulation of the Chromatin Regulatory System Has Been Implicated in up to 50% of All Cancers 4 Significant Market Opportunity 2.5M People 50% of All Cancers Based on exome sequencing, the chromatin regulatory system is implicated in ~50% of all cancers $400+ billion 2030 global oncology market opportunity Patients impacted by these cancers
Our Gene Traffic Control Platform Makes It Possible to Understand and Drug Genetic Dependencies within the Chromatin Regulatory System 5 Integrated, Scalable, Efficient – Repeatable Paradigm Target Identification & Validation Production of Chromatin Regulatory System Components at Scale & Proprietary Assays Discovery and Optimization of Chemical Matter Targeted Protein Degraders Enzymatic Inhibitors Transcription Factor Disruptors Translation to Clinic and Identification of Biomarkers Determine dependencies (e.g., synthetic lethal)
6 Production of Chromatin Regulatory System Components Platform is Powered by Ability to Produce Components at Scale Drives Drug Discovery Pipeline with Cutting Edge Technology Surface Mapping Assembly HTS Biophysics/ SPR Affinity Screening and Validation Characterize TF/BAF Binding Sites Synthesize subcomplexes to enable drug discovery ASMS on full complex to yield novel degraders Multiple screening options with full complex Validation of novel small molecule binders BenefitsFeatures
Program / Target Modality Discovery IND-enabling Phase 1 Phase 2 Phase 3 Global Rights FHD-286 (BRG1 / BRM) Enzyme inhibitor FHD-609 (BRD9) Protein degrader Selective BRM I) Enzyme inhibitor II) Protein degrader Selective ARID1B Protein degrader Synthetic Lethal Targets (multiple) I) Enzyme inhibitors II) Protein degraders Transcription Factors (multiple) Transcription factor disruptors Partnered program (undisclosed) Transcription factor disruptor 7 Precision Oncology / Breadth and Depth First Two Programs in the Clinic, Broad Pipeline Advancing AML Early Clinical Data (Q4 2021) Uveal melanoma Early Clinical Data (Q4 2021) Synovial sarcoma Early Clinical Data (H1 2022) BRG1 mutated cancers IND 2022 ARID1A mutated cancers BRG1 mutated cancers Gene Traffic Control® Platform
The Chromatin Regulatory System Orchestrates Gene Expression
Normal gene expression The Chromatin Regulatory System Orchestrates Gene Expression 9 Two Major Components Work in Concert - Chromatin Remodeling Complexes and Transcription Factors Work together to orchestrate gene expression TF’s guide chromatin remodeling complexes to the right locations Once chromatin unpacked, gene expression can occur 1 2 3 Chromatin – compacted form of DNA inside the nucleus of the cell Chromatin Right genes Transcription FactorChromatin remodeling complex
Breakdowns in the Chromatin Regulatory System Lead to Disease 10 Mutations or overexpression in chromatin remodeling complexes result in abnormal gene expression Mutated or overexpressed TF hijacks chromatin remodeling complex to wrong location DISEASE DISEASE
Chromatin Regulatory System – Abundance of Targets 11 28 Chromatin Remodeling Complexes and >1,000 TFs Estimate >100 Transcription Factors Associated with just the BAF Complex BAF Complex and Associated Transcription Factors + BAF Complex Subunits Mutated and Dysregulated in Cancer
Mutations Lead to Disease Specific Genetic Dependencies on the Chromatin Regulatory System 12 Transcription Factor Mutations / Overexpression Chromatin Remodeling Complexes Mutations / Overexpression Mutations that Impinge on the Chromatin Regulatory System Novel Targets / Dependencies Targeted Protein Degradation: Bi-functional protein degraders for targets with no enzymatic activity Enzymatic Inhibitors: Highly selective and allosteric small molecule inhibitors Transcription Factor Disruptors: Disrupt interactions between chromatin remodeling complexes and transcription factors Tailored Drugging Approaches ATP ADP Potential druggable sites
FHD-286: Clinical Entry Point - AML and Uveal Melanoma FHD-286 is a Potent, Selective, Allosteric, Small Molecule Inhibitor of the BRG1 and BRM subunits of the BAF complex
FHD-286 Targets Abnormal Dependencies on BAF in Cancer 14 • BRM/BRG1 is the engine (ATPase) of the BAF chromatin remodeling complex • BRG1 & BRM are highly similar proteins BRG and BRM Subunits BRMBRG1 Target / Approach • BRG1/BRM ATPase • Small molecule, allosteric, oral enzymatic inhibitor Indications • Acute myelogenous leukemia (AML) • Uveal melanoma • Indication expansion work ongoing in multiple solid tumors Mutation / Aberration • AML: Elevated BRG1-BAF / TF activity in AML blast cells • Uveal Melanoma: GNAQ/GNA11 mutated UM is driven by dependency on BAF / TF activity Program Status / Milestones • Phase I studies enrolling in AML and metastatic uveal melanoma • Phase I data as early as Q4’21 New Patients Impacted / Year* • AML: Over 20,000 relapsed and/or refractory patients • Uveal melanoma: Over 5,000 patients BAF Chromatin Remodeling Complex * US
15 Disease State Treatment with FHD-286 Loss of blast phenotype / Apoptosis Differentiation AML blasts stuck in BAF / TF dependent proliferative phase HSC Cancerous blast cells rely on BRG1 containing BAF / TF activity BAF – TF Activity BAF – TF Activity AML Dependent on BRG1 / Lineage Dependent TF Interaction
AML Dependent on BRG1 / Lineage Dependent TF Interaction 16 Subtype Sample ID TF #1 SPI1 (PU.1) TF #3 TF #4 SPI1 (PU.1) / BAF Dependency SPI1 ChIPseq TF Association with AML by FAB Classification: 70% BRG1 Inhibition Leads to Down Regulation of SPI1 (PU.1)
FHD-286 Shows Broad Efficacy Across AML Patient Derived Samples 17 Notable Patient ID Deep Response Pathology Review Disease Status 1690AML1 Y AML Secondary 1695AML1 Y AML/MDS Secondary 1696AML1 Y AML Secondary 1701AML1 Y AML Secondary 1893AML1 Y AML R/R 1899AML1 Y AML R/R 1990pAML1 Y AML R/R 1991pAML1 Y AML de novo 2041AML1 Y N/A de novo 2043pAML1 Y AML R/R 2059AML1 Y AML R/R 1682AML1 ~ N/A N/A 1689AML1 ~ AML/MDS de novo 1684AML1 N CML R/R 1924AML1 N AML/MDS R/R • Response observed in a majority of primary AML samples, irrespective of prior treatment or disease stage • Additional data set from patient derived samples demonstrate mutation agnostic responses 1695AML1 – BM-secondary Aza + venetoclax 7+3 Pro-differentiation effect Y = Complete reduction in blast cells ~ = Partial reduction N = No response
Dose-Dependent Tumor Growth Inhibition Observed with FHD-286 Treatment in AML CDX Models 18 Tumor Volume Body Weight 0 7 14 21 0 250 500 750 1000 1250 Days Post Treatment T u m o r V o lu m e ( m m 3 ) 0 7 14 21 0 800 1600 2400 3200 Days Post Treatment T u m o r V o lu m e ( m m 3 ) 0 7 14 21 80 90 100 110 120 Days Post Treatment B o d y W e ig h t C h a n g e ( % ) 0 7 14 21 80 90 100 110 120 Days Post Treatment B o d y W e ig h t C h a n g e ( % ) MV4-11 CDX Model (FLT3 ITD, MLL-AF4) OCI-AML2 CDX Model (MII-AF6, DNMT3a mut.) Tumor Volume Body Weight
FHD-286 Shows Effect Across Range of Mutations in AML Patient Derived Samples 19 IC 5 0 ( n M ) Patient samples
Therapeutic Rationale for Uveal Melanoma: Dependency on Overexpression of the MITF / SOX10 Transcription Factors and the BAF Complex 20 Inhibiting BRG1/BRM to Shut Down the Abnormal TF Interaction with the BAF Complex SOX10 MITF MITF ChIPseq SOX10 ChIPseq Biology Over 85% of uveal melanoma cancers have GNAQ or GNA11 mutations Validation of Dependency and Approach
FHD-286 was Associated with Dose-Dependent Tumor Regression in Uveal Melanoma CDX Models at Tolerated Doses 21 0 7 14 21 28 0 300 600 900 1200 Days Post Treatment T u m o r V o lu m e ( m m 3 ) Tumor Volume 0 7 14 21 28 80 90 100 110 120 Days Post Treatment B o d y W e ig h t C h a n g e ( % ) Body Weight 0 5 10 15 20 0 150 300 450 600 750 900 Days Post Treatment T u m o r V o lu m e ( m m 3 ) 0 5 10 15 20 80 90 100 110 120 Days Post Treatment B o d y W e ig h t C h a n g e ( % ) Tumor Volume Body Weight MP-46 uveal melanoma CDX model • Dose-dependent tumor growth inhibition • Well tolerated 92-1 uveal melanoma CDX model • Dose-dependent tumor growth inhibition • Tumor regression at 1.5 mg/kg, PO, QD • Well tolerated
FHD-286 Clinical Development Plan 22 Clinical data as early as Q4 2021 Trial Designs • Single patient accelerated titration (n=1) • Convert to 3+3 once relevant PK/PD, safety or clinical activity observed • Retrospective biomarker analysis to further evaluate safety and efficacy • Assess safety, PK, biomarkers and efficacy CLINICAL PLAN AML & Uveal Melanoma FIH Phase 1 Studies Expansion cohorts in AML, UM and potentially other indications Potential for entry into definitive efficacy trials in AML Potential for entry into definitive efficacy trials in metastatic uveal melanoma Potential for Indication Expansion Beyond AML and UM Metastatic Uveal Melanoma Relapsed / Refractory AML
FHD-609: Clinical Entry Point – Synovial Sarcoma FHD-609 is a Selective, Potent, Protein Degrader of the BRD9 component of the BAF complex
FHD-609 Targets and Degrades the BRD9 subunit of BAF which is Required for Synovial Sarcoma Cells to Survive 24 Selective, Potent BRD9 Targeted Protein Degrader SS18-SSX1 / SSX2 / SSX4 mutated subunit Target / Approach • BRD9 • Intravenous Protein Degrader Initial Indication • Synovial Sarcoma Mutation / Aberration • SS18-SSX1 / SSX2 / SSX4 protein fusions Program Status / Milestones • Phase I data as early as H1’22 New Patients Impacted / Year* • Synovial Sarcoma: Over 1,800 patients / year • BRD9 is required for the survival of synovial sarcoma cells B R D 9 D e p e n d e n c y S c o re BRD9 subunit * US, EU5, Japan
Robust in vivo Activity Observed in Synovial Sarcoma Model and BRD9 Degradation Associated with FHD-609 Treatment 25 Weekly Dosing of FHD-609 Achieved Sustained BRD9 Degradation SY01 Synovial Sarcoma CDX Model • Mutation: SS18-SSX2 • Inhibited tumor growth • Dose dependent BRD9 degradation correlated with anti-tumor activity • Sustained BRD9 Degradation
ASKA CDX Model Superior Tumor Growth Inhibition of FHD-609 in a Synovial Sarcoma Model as Compared to Ifosfamide and Pazopanib 26 0 10 20 30 40 0 700 1400 2100 2800 Days Post Treatment T u m o r V o lu m e ( m m 3 ) 0 7 14 21 28 80 90 100 110 120 Days Post Treatment % B o d y W e ig h t C h a n g e Tumor Volume Body Weight • Mutation: SS18-SSX1 • Superior tumor growth inhibition compared to ifosfamide and pazopanib • Complete suppression observed over 30 days at 2 mg/kg of FHD- 609
FHD-609 Clinical Development Plan 27 Metastatic Synovial Sarcoma Synovial Sarcoma expansion cohorts Synovial Sarcoma FIH Phase 1 Potential for entry into definitive efficacy trials in synovial sarcoma CLINICAL PLAN Clinical data as early as H1 2022 SMARCB-1 deleted tumors and potentially other indications Trial Designs • Single patient accelerated titration (n=1) • Convert to 3+3 once relevant PK/PD, safety or clinical activity observed • Assess safety, PK, clinical activity and biomarkers Biomarkers: • SS18-SSX1, SS18-SSX2 or SS18-SSX4 translocation
Selective BRM Modulators for BRG1 Mutated Cancers Enzymatic Inhibitor and Protein Degrader Programs
BRG1 Mutations Create a Genetic Dependency on BRM 29 Selective BRM Modulators Overview BRM BRG1 Target / Approach • BRM • Enzymatic inhibitor • Targeted protein degrader Indication • BRG1 mutated cancers (e.g., NSCLC), 30+ cancers with BRG1 mutations Mutation / Aberration • BRG1 Stage • Pre-clinical New Patients Impacted / year* • > 100,000 B R M D e p e n d e n c y S c o re * US, EU5, Japan
BRG1 Mutated in ~5% of All Tumors – Potential Broad Addressable Patient Populations 30 BRG1 mutated across range of tumors Accounts for ~5% of all tumors BRG1 mutated in up to 10% of NSCLC tumors, minimal overlap with other mutations
20X Selective BRM Inhibitor and Targeted Protein Degrader Discovered from Gene Traffic Control Platform 31 Selective BRM Modulators Enzyme assay using BRG1 and BRM subunits Enzyme assay using BRG1 and BRM containing full BAF complexes Cellular assays for BRG1 and BRM BRM Selective Inhibitor Program • Panel showing biochemical selectivity of a 20X more selective inhibitor of BRM vs. BRG1 BRM Selective Degrader Program • Selective BRM degrading molecules led to the degradation of over 75% of BRM while leaving BRG1 unchanged
Selective ARID1B Protein Degrader for ARID1A Mutated Cancers
ARID1A – Most Mutated Subunit in BAF Complex – Creates Dependency on ARID1B 33 Selective ARID1B Protein Degrader Overview ARID1A ARID1B Target / Approach • ARID1B • Targeted Protein Degrader Indication • ARID1A mutated cancers Mutation / Aberration • ARID1A mutations (e.g., ovarian, endometrial, colorectal, bladder and other cancers) Stage • Pre-clinical New Patients Impacted / year* • > 175,000 A R ID 1 B D e p e n d e n c y S c o re * US, EU5, Japan
ARID1B Highlights Broad Potential of Foghorn Gene Traffic Control Platform 34 Drugging Strategy • Platform produces BAF complexes and subcomplexes containing either ARID1A or ARID1B at scale • Status: Validating hits from multiple High Throughput Screens ARID1B Highly purified ARID1B-BAF Complex Biology • ARID1A is the most highly mutated subunit of the BAF complex in cancer • ~5% of all tumors harbor ARID1A mutations including; endometrial cancer (~40%), bladder cancer (~25%) and ovarian (~15%) • Synthetic lethal relationship with ARID1B • Developing protein degraders to ARID1B
Novel Approach to Targeting Transcription Factors Disrupting Transcription Factor – Chromatin Remodeling Complex Interactions
A New Approach to Drugging Transcription Factors Enabled by Proprietary Ability to Purify and Synthesize Chromatin Regulatory System Components 36 • Highly involved in gene expression • Implicated in range of cancers and other diseases TFs are compelling drug targets… • Featureless surface: no druggable binding pocket • Tight interactions with DNA: undruggable affinities …but historically difficult to target Historical Focus Potential druggable sites Foghorn’s Focus Foghorn has a new approach focusing on interaction with BAF ▪ Druggable binding pockets ▪ Druggable affinities
Transcription Factor-Chromatin Remodeling Complex Interactions 37 Unique Insights in Where and How Transcription Factors Bind TF #2TF #1 TF #3 Transcription Factors (TF): TF #4 0.01 0.1 1 10 100 1000 0 100 200 300 400 SPI1 (nM) R U KD = 21 nM 0.1 1 10 100 1000 10000 0 50 100 150 200 250 MYOD1 (nM) R U KD = 125 nM KD = 351 nM 0.1 1 10 100 1000 10000 0 50 100 150 200 250 300 350 MITF (nM) R U KD = 94 nM 0.1 1 10 100 1000 10000 0 100 200 300 400 FoxA1 (nM) R U TF #1 (nM) TF #2 (nM) TF #3 (nM) TF #4 (nM)
• Merck collaboration to drug single specified transcription factor target • $425 million in up-front, research, development and sales-based milestones • Up to low double-digit royalties on product sales Highly Scalable Approach and Significant Unmet Medical Need 38 Potential to Drug > 100 TFs Associated with BAF • >100 TFs estimated associated with BAF • Foghorn pursuing multiple TFs in parallel • Approach highly scalable and potential broad application – other chromatin remodeling complexes and other diseases
Investment Highlights LARGE MARKET POTENTIAL ➢ Biology implicated in up to 50% of cancer potentially impacting ~2.5 million patients ➢ Potential applications beyond oncology in diseases including virology, autoimmune disease and neurology 39 WELL FUNDED MEANINGFUL UPCOMING MILESTONES ➢ Phase I FHD-286 data as early as Q4’21 ➢ Phase I FHD-609 data as early as H1’22 ➢ $160.9 million cash and equivalents as of 3/31/2021 EXPERIENCED LEADERSHIP TEAM ➢ Expertise across drug discovery, clinical development and commercialization ➢ Over 220 drug candidates into the clinic and over 30 drugs approved
Appendix
Carl Decicco, Ph.D., CSO Proven Leadership Team 41 Steve Bellon, Ph.D., SVP, Drug Discovery Adrian Gottschalk, President & CEO Carlos Costa, SVP, HR Sam Agresta, M.D., M.P.H., CMO Jacqueline Cinicola, VP Regulatory Affairs Murphy Hentemann, Ph.D., VP Program Leadership Chong-Hui Gu, VP, CMC and QA Ryan Kruger, PhD, VP, Biology Fanny Cavalie, SVP, Business & Operations David Millan, Ph.D, VP, Chemistry Michael LaCascia, CLO Nicola Majchrzak, VP, Clinical DevelopmentAllan Reine, M.D., CFO Scott Innis, VP, Program Leadership
Charles Sawyers, M.D. MSKCC, HHMI – SAB Chair Gerald Crabtree, M.D. Stanford, HHMI; Founder Faheem Hasnain Gossamer Bio, Chair of Mirati David Schenkein, M.D. General Partner, GV Craig Peterson, Ph.D. Professor UMass Medical School Tony Kouzarides, Ph.D. Gurdon Institute – University of Cambridge Doug Cole, M.D. Flagship Pioneering – Board Chair; Founder Cigall Kadoch, Ph.D. Dana-Farber, Broad, HMS; Founder Scott Biller, Ph.D. Former CSO and Strategic Advisor, Agios Adam Koppel, M.D., Ph.D. Bain Capital Life Sciences Simba Gill, Ph.D. Evelo Biosciences, Partner at Flagship Pioneering Michael Mendelsohn, M.D. Cardurion Pharmaceuticals Adrian Gottschalk Foghorn President & CEO Ian Smith Exec. Chair of Solid Bio., Chair of ViaCyte, Former COO of Vertex Experienced Leadership Team with Industry Leading Advisors and Investors 42 BOARD OF DIRECTORS SCIENTIFIC AND OTHER ADVISORS