RLAY 8-K
Relay Therapeutics, Inc. (RLAY)
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
FORM
CURRENT REPORT
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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.
Relay Therapeutics, Inc. (the “Company”) will be conducting meetings with participants attending the 43rd Annual J.P. Morgan Healthcare Conference (the “Conference”) during the week of January 13, 2025. A copy of the slides to be presented by the Company at the Conference is furnished as Exhibit 99.1 to this Current Report on Form 8-K, which is incorporated herein by reference.
The information in this Item 7.01, including Exhibit 99.1 attached hereto, is intended to be 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.
99.1 |
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Cover Page Interactive Data File (embedded within Inline XBRL document). |
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.
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RELAY THERAPEUTICS, INC. |
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Date: |
January 13, 2025 |
By: |
/s/ Brian Adams |
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Brian Adams |
J.P. Morgan Conference Presentation January 2025 Exhibit 99.1
Disclaimer This presentation contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, as amended, including, without limitation, implied and express statements regarding the progress and timing of the clinical development of the programs across our portfolio, including the expected therapeutic benefits of our programs, and potential efficacy and tolerability; the timing of clinical data updates across our pipeline, including the progress of doublet and triplet combinations for RLY-2608, the timing of clinical updates for RLY-2608; the timing of clinical initiation of our various programs, including a potential pivotal trial for RLY-2608, clinical development in vascular malformations, clinical development of our non-inhibitory chaperone for Fabry disease, and clinical development of our NRAS-selective inhibitor; the potential of our product candidates to address a major unmet medical need; expectations regarding our pipeline, operating plan, use of capital, expenses and other financial results; our cash runway projection; the competitive landscape and potential market opportunities for our product candidates; the expected strategic benefits under our collaborations; our ability to successfully establish or maintain collaborations or strategic relationships for our product candidates; expectations regarding current and future interactions with the U.S. Food and Drug Administration (FDA); our ability to manufacture our product candidates in conformity with the FDA’s requirements; the capabilities and development of our Dynamo®️ platform, including its role in identifying product candidates; our plans to develop, manufacture and commercialize our current product candidates and any future product candidates; and the implementation of our business model and strategic plans for our business, current product candidates and any future product candidates. The words “may,” “might,” “will,” “could,” “would,” “should,” “plan,” “anticipate,” “intend,” “believe,” “expect,” “estimate,” “seek,” “predict,” “future,” “project,” “potential,” “continue,” “target” and similar words or expressions, or the negative thereof, are intended to identify forward-looking statements, although not all forward-looking statements contain these identifying words. Any forward-looking statements in this presentation are based on management's current expectations and beliefs and are subject to a number of risks, uncertainties and important factors that may cause actual events or results to differ materially from those expressed or implied by any forward-looking statements contained in this presentation, including, without limitation, risks associated with: the impact of global economic uncertainty, geopolitical instability and conflicts, or public health epidemics or outbreaks of an infectious disease on countries or regions in which we have operations or do business, as well as on the timing and anticipated results of our clinical trials, strategy, future operations and profitability; the delay or pause of any current or planned clinical trials or the development of our drug candidates; the risk that the preliminary results of our preclinical or clinical trials may not be predictive of future or final results in connection with future clinical trials of our product candidates; our ability to successfully demonstrate the safety and efficacy of our drug candidates; the timing and outcome of our planned interactions with regulatory authorities; and obtaining, maintaining and protecting our intellectual property. These and other risks, uncertainties and important factors are described in the section entitled "Risk Factors" in our most recent Annual Report on Form 10-K and Quarterly Report on Form 10-Q, as well as any subsequent filings with the Securities and Exchange Commission. Any forward-looking statements represent our views only as of the date of this presentation and we undertake no obligation to update or revise any forward-looking statements, whether as a result of new information, the occurrence of certain events or otherwise. We may not actually achieve the plans, intentions or expectations disclosed in our forward-looking statements, and you should not place undue reliance on our forward-looking statements. No representations or warranties (expressed or implied) are made about the accuracy of any such forward-looking statements. Certain information contained in this presentation relates to or is based on studies, publications, surveys and other data obtained from third-party sources and our own internal estimates and research. While we believe these third-party studies, publications, surveys and other data to be reliable as of the date of this presentation, we have not independently verified, and make no representation as to the adequacy, fairness, accuracy or completeness of, any information obtained from third-party sources. In addition, no independent source has evaluated the reasonableness or accuracy of our internal estimates or research and no reliance should be made on any information or statements made in this presentation relating to or based on such internal estimates and research. This presentation contains trademarks, trade names and service marks of other companies, which are the property of their respective owners.
Relay Tx – Clear Path to Address Large, Near-Term Commercial Opportunities Anticipated 2025 Corporate Milestones Productive Platform & Strong Balance Sheet 8 DCs & 4 INDs 2 clinical POC datasets Breast Cancer RLY-2608 Pivotal trial start – 2025 Full Ph1-2 data – 2025 Vascular Malformations RLY-2608 Clinical start – 1Q 2025 NRAS Pre-clinical Clinical start – 2H 2025 Fabry Disease Pre-clinical Clinical start – 2H 2025 Progress 4 unnamed research programs ~$840M cash as of end 3Q 2024
RLY-2608 Unlocks Large Breast Cancer Market Robust RLY-2608 Clinical Data 9.2mo mPFS 11.4mo mPFS 9.2mo mPFS 2L only 2L+ 5.5mo mPFS for capivasertib + fulv in pt with prior CDK4/63 13 countries worldwide ~100 clinical sites 800+ patients dosed across trials ~$840M cash as of end 3Q 2024 Expected pivotal start Fulvestrant doublet CDKi + fulv triplets Other novel combos ongoing RLY-2608 Breast Cancer Combinations Relay Tx’s Extensive Global Clinical Experience Capital to Execute Significant Breast Cancer Commercial Opportunity 1. Relay Tx PIK3CA internal market forecast (patient-based – US, EU5, Japan). Forecast includes estimates for genetic testing, class share, market access, compliance, duration of therapy and assumes current PIK3CA therapy net price (primary sources: SEER; GloboCan; Global Data; Evaluate Pharma; DRG Market Forecast; PIK3CAi PIs); 2. PI3KCAmut, HR+/HER2- Advanced / Metastatic Breast Cancer (post CDK4/6) ; 3. Turner N Engl J Med 2023; 388:2058-2070 (n=355); Note: data shown are not from head-to-head studies, and no head-to-head studies have been conducted ReDiscover preliminary data as of 11/04/2024 $6B+ Current PI3Kα Pathway Total Addressable Market1 (Metastatic HR+/HER2- Breast Cancer) RLY-2608 (600mg BID) + fulvestrant2 Interim data as of 04 Nov 2024
Relay Tx – 2025 Priorities BREAST CANCER PI3Kα-Driven Breast Cancer PI3Kα-Driven Vascular Malformations 1st mutant-selective PI3Kα inhibitor 1st mutant-selective PI3Kα inhibitor Fabry Disease 1st non-inhibitory αGal chaperone GENETIC DISEASE GENETIC DISEASE NRAS-Driven Solid tumors 1st NRAS-selective inhibitor Solid Tumors
PI3Kα Mutations Represent a Large Commercial Opportunity PI3Kα mutations represent a large commercial opportunity Non-selective PI3Kα targeting has significant limitations Relay Tx’s Dynamo®️ Platform created mutant selective molecule Breast Cancer Vascular Malformations Non-Breast Cancer Solid Tumors ~140k pts (prevalence¹) ~170k pts (prevalence²) ~90k pts (incidence³) Challenging Tolerability Limited Efficacy RLY-2608 Limited Combinability 1. Prevalent US patient population with a PIK3CA mutation in each line of therapy, excluding PTEN co-mutations (Global Data HR+/HER2- Breast Cancer Global Forecast, November 2023; 3rd party source for alteration rate); 2. Prevalent US patient population of vascular malformation patients with a PIK3CA mutation (multiple sources); 3. Incident US patient population solid tumors annually with a PIK3CA mutation, excluding PTEN and KRAS co-mutations (SEER; 3rd party source for alteration rate, May 2024)
Breast Cancer – Large Market for Mutant-Selective PI3Kα Targeted Therapies CDK4/6 + AI (abema / ribo / palbo) 1L Endocrine Sensitive 10,000 pt CDK4/6 + fulvestrant Inavolisib + palbo + fulv Capivasertib + fulvestrant or Alpelisib + fulvestrant or Everolimus + AI Current PI3Kα Pathway Total Addressable Market2 (Metastatic HR+/HER2- Breast Cancer) $6B+ CDK4 + next gen oral ET Oral SERD monoTx Inavolisib + fulv ADCs Emerging TX RLY-2608 combinations Current Standard of Care 1L Endocrine Resistant 6,000 pt 2L 13,000 pt Fulvestrant or elacestrant 1. Prevalent US patient population with a PIK3CA mutation in each line of therapy, excluding PTEN co-mutations (Global Data HR+/HER2- Breast Cancer Global Forecast, November 2023; 3rd party source for alteration rate); 2. Relay Tx PIK3CA internal market forecast (patient-based – US, EU5, Japan). Forecast includes estimates for genetic testing, class share, market access, compliance, duration of therapy and assumes current PIK3CA therapy net price (primary sources: SEER; GloboCan; Global Data; Evaluate Pharma; DRG Market Forecast; PIK3CAi PIs) PIK3CA mutated HR+/HER2- BC Treatment Paradigm1
RLY-2608 – Mutant-Selective PI3Kα Additive to Many Potential Combinations PI3Kα Backbone Current Standard of Care Non-Mutant Selective Inhibitors (capivasertib, alpelisib, inavolisib) Emerging Options for Future Standard of Care RLY-2608 PIK3CAmut HR+/HER2- Breast Cancer Treatment Paradigm + Cell Cycle Hormone Therapy CDK4/6: Ribociclib, abemaciclib, palbociclib AI / fulvestrant CDK4, CDK2, CDK2/4 Oral SERD/SERM +
RLY-2608 – ReDiscover Trial Overview 1. Excludes PIK3CAmut clear cell OvCA, HNSCC, Cervical cancer, and colorectal patients; 2. Double mutation defined as one major PIK3CA mutation (E542X, E545X, H1047X) + ≥1 additional PIK3CA mutation per local assessment; CCOC = clear cell ovarian cancer Part 2 – Dose Expansion Study Arm Part 1 – Dose Escalation MTD/RP2D PIK3CAmut, HR+/HER2- Advanced / Metastatic Breast Cancer (post-CDK4/6) PIK3CAmut, HR+/HER2- Advanced / Metastatic Breast Cancer Focus of Following Data Doublet MTD/RP2D PIK3CAmut Advanced Solid Tumors (CCOC, HNSCC, cervical, other1, double PIK3CA mutants2) PIK3CAmut Advanced Solid Tumors (mixed histologies) Mono MTD/RP2D PIK3CAmut, HR+/HER2- Advanced / Metastatic Breast Cancer (post-CDK4/6) PIK3CAmut, HR+/HER2- Advanced / Metastatic Breast Cancer Ribociclib (CDK4/6) Atirmociclib (CDK4) MTD/RP2D Triplet RLY-2608 + Fulvestrant RLY-2608 RLY-2608 + Fulvestrant + CDK4/6 & CDK4i
1. SABCS 2021 #P5-17-05 (n=60); 2. SABCS 2021 #PD-13-05; 3. Turner N Engl J Med 2023; 388:2058-2070 (n=355); 4. 5.5mo mPFS reported in CDK4/6-experienced patient sub-population of CAPItello-291; 5. Prior SERD includes fulvestrant and next-generation SERDs; 6. FDA Prescribing Information. Note: These data are derived from different clinical trials at different points in time, with differences in molecule composition, trial design and patient populations. As a result, cross-trial comparisons cannot be made, and no head-to-head clinical trials have been conducted. 24% 37% ORR CBR 26%6 56% 19% 48% Capi ORR & CBR include 30% of pts who are CDK4/6-naïve 7.1mo 5.6mo 5.5mo 5.5mo4 mPFS 39% 67% 9.2mo 33% 0% 47% 52% 63% 23% 57% 39% % prior SERD5 % pt with >=2 prior LoT Data Benchmark BYLieve Cohort C2 (N=126) CAPItello-2913,6 (N=355) Ph1b Arm D1 (N=60) ReDiscover (N=52) Doublet Combination Regimens Alpelisib + fulvestrant Capivasertib + fulvestrant Inavolisib + fulvestrant RLY-2608 + fulvestrant (600mg BID, RP2D) not approved approved 2019 approved 2023 ReDiscover preliminary data as of 11/04/2024 PI3Kα Inhibitors – Efficacy Profiles
RLY-2608 – Efficacy: 11.4 Month Median PFS in 2L & Kinase Patients ReDiscover preliminary data as of 11/04/2024 Note: Follow-up estimated based on reversed KM. PFS estimates based on KM methods. Time Since First Dose (months) RLY-2608 600 mg BID (RP2D) + Fulvestrant Post-CDK4/6 Patients, excluding PTEN / AKT Co-Mutations Progression-Free Survival (%) Kinase Mutations (N=29) Time Since First Dose (months) Progression-Free Survival (%) Number of Patients at Risk: 2L Patients (N=32) 11.4mo mPFS (95% CI: 7.2, NR) 40% ORR (8/20 pt) 11.4mo mPFS (95% CI: 9.2, NR) 67% ORR (10/15 pt)
PI3Kα Inhibitors – Tolerability Profiles 1. SABCS 2021 #P5-17-05; 2. Rugo 2021 Lancet Oncol 22:489; 3. FDA Prescribing Information; 4. CAPItello-291: Turner N Engl J Med 2023; 388:2058-2070. Note: These data are derived from different clinical trials at different points in time, with differences in molecule composition, trial design and patient populations. As a result, cross-trial comparisons cannot be made, and no head-to-head clinical trials have been conducted. Grade 3+ Hyperglycemia All Grade 3+ TRAEs Alpelisib + fulvestrant Capivasertib + fulvestrant Inavolisib + fulvestrant RLY-2608 + fulvestrant (600mg BID, RP2D) Doublet Combination Regimens Dose Discontinuation due TRAEs not approved approved 2019 approved 2023 Discontinuous dosing: 4 days on, 3 days off Ph1b Arm D1 (n=60) BYLieve2 (n=127) FDA Label3 (n=355) Data Benchmark ReDiscover (n=64) 0% 42%4 34% of pt BMI ≥30 and/or HbA1c ≥5.7% ReDiscover preliminary data as of 11/04/2024
RLY-2608 – Interim Clinical Data Continue to Show Clinically Meaningful PFS 1. CAPItello-291: Turner N Engl J Med 2023; 388:2058-2070; 2. In CAPItello-291, CBR and ORR not reported for CDK4/6-experienced patient population; ORR = objective response rate, mPFS = median progression free survival, LoT = line of therapy (metastatic setting), SoC = Standard of Care, TRAE = treatment related adverse effects, RP2D = recommended Phase 2 dose, CBR = clinical benefit rate, SERD = selective estrogen receptor degrader; Note: data shown are not from head-to-head studies, and no head-to-head studies have been conducted. Favorable Efficacy PIK3CAmut, HR+/HER2- Advanced / Metastatic Breast Cancer (post CDK4/6) Favorable Tolerability 42% Gr3 TRAE Capivasertib + Fulv1 (4 days on, 3 off) 31% Gr3 TRAE RLY-2608 + Fulv (600 mg BID, RP2D) More Heavily Pre-Treated Pt 23% ≥2 prior LoT 0% Prior SERD 41% ≥2 prior LoT 52% Prior SERD Interim RLY-2608 data supportive of pivotal trial in post-CDK4/6 Breast Cancer against capivasertib Capi ORR & CBR include 30% of pts who are CDK4/6 naïve 5.5mo mPFS 9.2mo mPFS 11.4mo mPFS 9.2mo mPFS ORR: 39% CBR: 67% ORR: 26% CBR: 56% 2L only 2L+ Post-CDK4/6 ReDiscover preliminary data as of 11/04/2024
RLY-2608 – Initial Pivotal Trial Planned for Post-CDK4/6 Patients in 2025* Eligibility Criteria: PIK3CAmut HR+, HER2- advanced / met BC 1 prior line CDK4/6 inhibitor Broad metabolic inclusion criteria No known PTEN or AKT mutation RLY-2608 (600 mg BID, RP2D) + fulvestrant Capivasertib (400 mg BID 4 days on, 3 days off) + fulvestrant R Primary Endpoint: PFS Secondary Endpoints: OS, ORR, DoR, QoL Post-CDK4/6 Trial Post-CDK4/6 pivotal start expected in 2025 *Subject to discussions with regulators; eligibility criteria, endpoints, RP2D, and other aspects of trial design have not yet been finalized; OS = overall survival, DoR = duration of response, QoL = quality of life, met BC = metastatic Breast Cancer; 2L = 2nd line
Large Unmet Need in Metastatic Breast Cancer 13,000 patients 2L PIK3CAmut, HR+/HER2- mBC1 6,000 patients 1L Endocrine Resistant 10,000 patients 1L Endocrine Sensitive Notes: 1. Prevalent US patient population with a PIK3CA mutation in each line of therapy, excluding PTEN co-mutations (Global Data HR+/HER2- Breast Cancer Global Forecast, November 2023; 3rd party source for alteration rate); 2. All-comers and PIK3CAmut sub-group, MONALEESA-2; 3. All-comers and PIK3CAmut sub-group, MONALEESA-3; 4. INAVO120: SABCS 2023 GS03-13; 5. Turner N Engl J Med 2023; 388:2058-2070 (n=355); 6. Rugo 2021 Lancet Oncol 22:489, SABCS 2021 #P1-18-03; 7. MAINTAIN: Kalinsky 2023 J Clin Oncol 41:4004, postMONARCH: Kalinsky 2024 ASCO; 8. Elacestrant Prescribing Information; 9. Informed by qualitative and quantitative primary market research performed in Q2 2024 Capivasertib + fulv5 Alpelisib + fulv6 CDK4/6 + fulv7 SERD monotx8 Ribociclib + AI2 Median PFS of Current Standard of Care 5.5mo 5.6-8mo ~5-6mo ~2-4mo 25 months Ribociclib + fulv3 16-20 months Current Market Oppty Future Market Oppty Potential Market Opportunity9 ~$6-7B ~$4B ~$2B ~$3-4B ~$2B ~$3-4B RLY-2608 Potential to Drive Meaningful Improvement Also abemaciclib or palbociclib Inavolisib + palbo + fulv4 15 months
RLY-2608 – On Track to Realize 1L Potential with Triplet Combinations Phase 1 Aim for Triplets: Demonstrate safety, tolerability and preliminary efficacy with both current generation CDK4/6 and next-gen CDK4 to enable pivotal development potential in both Atirmociclib triplet has initiated Currently dosing at biologically active doses of RLY-2608 Dose Escalation RLY-2608 Fulvestrant + Ribociclib (CDK4/6, commercial SoC) Atirmociclib (CDK4, Pfizer) + + RLY-2608 Fulvestrant + Triplets
Relay Tx – 2025 Priorities BREAST CANCER PI3Kα-Driven Breast Cancer PI3Kα-Driven Vascular Malformations 1st mutant-selective PI3Kα inhibitor 1st mutant-selective PI3Kα inhibitor Fabry Disease 1st non-inhibitory αGal chaperone GENETIC DISEASE GENETIC DISEASE NRAS-Driven Solid tumors 1st NRAS-selective inhibitor Solid Tumors
Vascular Malformations – Over 170,000 US Patients US Patients % PIK3CAmut Approved Therapies Lymphatic Malformation (LM) Venous Malformation (VM) Cerebral Cavernous Malformation (CCM) PIK3CA-Related Overgrowth Spectrum (PROS) ~80k 80% ~65k pt ~100k ~20-25% ~20-25k pt ~120k 40-55% ~50-65k pt ~5-15k 100% ~5-15k pt No approved systemic therapy Vijoice® (alpelisib) Total US pt across types >300k pt ~170k pt PIK3CAmut Sources: ISSVA classification, NORD, Mayo Clinic, Novartis, Penington et al 2023, Gallagher et al 2022, Luks et al 2015, Limaye et al 2015, Peyre et al 2021, Hong et al 2021. Photo sources: Venot et al. Nature 2018, Wenger et al Genet Med 2022, Limaye et al Nature Genetics 2008, Mayo Clinic Vascular Malformation Types
PI3Kα-Driven Vascular Malformations – Patient Treatment Journey Current unmet need for selective, systemic therapy for Vascular Malformations Surgeon, Int. Radiologist, Dermatologist, Heme-Onc Geneticist, “Vascular Anomalist” PCP, Dermatologist, Surgeon, ENT, etc. Referral Pathway Symptom presentation Diagnosis Treatment Watch and wait; Compression Therapy Local treatment: sclerotherapy, surgery Systemic therapy: Alpelisib, sirolimus Invasive, recurrence is common (~25-40% recurrence rate) Incomplete responses, side effects & toxicities limit widespread use Frequency of use Temporary; 50-75% of diagnosed pts receive local or systemic Tx Treatment & Ongoing Management Source: primary research
Relay Tx – 2025 Priorities BREAST CANCER PI3Kα-Driven Breast Cancer PI3Kα-Driven Vascular Malformations 1st mutant-selective PI3Kα inhibitor 1st mutant-selective PI3Kα inhibitor Fabry Disease 1st non-inhibitory αGal chaperone GENETIC DISEASE GENETIC DISEASE NRAS-Driven Solid tumors 1st NRAS-selective inhibitor Solid Tumors
NRAS – Large Validated Market With Significant Unmet Need NRAS mutations observed in broad range of tumor types NRAS mutations are a key driver of solid tumors, though no NRAS-selective agent exists Head and Neck NSCLC Melanoma2 X ~0.6k ~2.2k ~4.0k ~0.4k ~6.4k ~1.1k Pancreatic Cancer Colorectal (CRC) Bladder Cancer Thyroid Cancer ~5.9k ~25,000 Annual US Patients1 RAF MEK ERK Cell growth and proliferation NRAS HRAS KRAS Downstream RAS pathway (pan-RAF, MEK, ERK) Pan-RAS mut c 1. Newly diagnosed (incident) patients with an NRAS mutation for each tumor type (SEER, 3rd party source for alteration rate, Jan 2024); 2. Melanoma includes incident stage III and IV patients only (excludes stage 0-II patients)
Limited Therapeutic Window of Current Agents – Pan-RAF/RAS & MEK Inhibitors based Limited Efficacy Limited Tolerability Limited Target Inhibition MEK + RAFi 62 – 100% Dose Modifications Pan-RAS (PDAC) 42% Regimen (2L NRASmut melanoma) ORR PFS (mo) Naporafenib (RAFi) + trametinib (MEKi) 13 – 47% 4.2 – 5.5 Exarafenib (RAFi) + binimetinib (MEKi) 33% -- MEK + RAFi 25 – 80% Inc. ALT: <10 – 22% Inc. AST: <10 – 20% Rash Liver Toxicity Pan-RAS (PDAC) 91% Inc. ALT: 7% Inc. AST: 5% Sources: ESMO 2024 #613MO (exarafenib + binimetinib - efficacy evaluable n=33 and 35% of total n=52 received prior MAPKi), ASCO 2021 #3007 (Belvarafenib + cobimetinib, n=32 all, 13 for efficacy), de Braud 2023 J Clin Oncol 41:2651 (naporafenib + trametinib, n=30 expansion arm), ASCO 2023 #9510 (tunlametinib, n=95), ESMO 2023 652O (RMC-6236, n=111 pts at ≥80mg); Scholl et al. 2007; Drosten et al. 2014; Esteban et al. 2001; Revolution Medicines Corporate Presentation 12/02/2024. KRAS KO is embryonic lethal in mice, whereas NRAS KO is tolerated Belvarafenib (RAFi) + cobimetinib (MEKi) had shown 39% ORR (n=13), but belvarafenib development discontinued RAF MEK ERK Cell growth and proliferation NRAS HRAS KRAS Downstream RAS pathway (pan-RAF, MEK, ERK) Pan-RAS mut Non-Selective Agents in Development Scholl et al. 2007; Drosten et al. 2014; Esteban et al. 2001
Deep Regressions in PDXs Across Histologies & NRAS Genotypes Vehicle RTX-6 25 mg/kg QD RTX-6 100 mg/kg QD Binimetinib+ Exarafenib 3+10 mg/kg BID RTX-6 20 mg/kg QD Relay Tx compounds well tolerated in exploratory animal toxicology studies at exposures >10X above the predicted efficacious exposure level Exposure margin based on clinical findings from dose range finding data in dogs and rats; pending final histopathology results; PDX = patient derived xenografts
Relay Tx – 2025 Priorities BREAST CANCER PI3Kα-Driven Breast Cancer PI3Kα-Driven Vascular Malformations 1st mutant-selective PI3Kα inhibitor 1st mutant-selective PI3Kα inhibitor Fabry Disease 1st non-inhibitory αGal chaperone GENETIC DISEASE GENETIC DISEASE NRAS-Driven Solid tumors 1st NRAS-selective inhibitor Solid Tumors
~$1.6B peak sales1 Fabry Disease – Large Validated Market With Significant Unmet Need Over 1,000 different GLA gene mutations Reduces αGal protein levels Leads to accumulation of toxic Gb3 substrate Broad clinical manifestations; Life threatening cardiac & renal disfunction Fabry disease is a lysosomal storage disorder affecting ~8,000 patients in US Current therapies have established a market but have key limitations Current Therapies Limited αGal activation Limited mutational coverage Not combined with ERT Limitations of Inhibitory Chaperone 1 2 3 Inhibitory Chaperone Therapy (migalastat) Need for a non-inhibitory αGal chaperone ~$780M peak sales2 40% of pts Enzyme Replacement Therapy (ERT, intravenous) 1. Combination of Fabrazyme® (~$1,100M) and Replagal® (~$480M) 2030 forecasted WW sales per EvaluatePharma, April 2024; 2. Galafold® 2030 forecasted WW sales per EvaluatePharma, April 2024
Fabry Disease – Potential Benefits of Non-Inhibitory Chaperone Approach Notes: 1. R301Q mut αGal (2hr post compound washout, expressed in GLA KO HEK293 cells); In vitro αGal activity assay (4MU) across multiple GLA mutations expressed in HEK293 GLA KO cells (assessed at 1uM); 3. GLA KO mouse model, activity assessed following single dose of ERT and 14-day treatment with RTX-1
BREAST CANCER Relay Tx – 2025 Priorities PI3Kα-Driven Vascular Malformations ~140,000 pts1 ~170,000 pts2 (chronic treatment) 1st mutant-selective PI3Kα inhibitor 1st mutant-selective PI3Kα inhibitor 1. Prevalent US patient population with a PIK3CA mutation (excluding PTEN co-mutations) in adjuvant, first line metastatic and second line metastatic settings (Global Data HR+/HER2- Breast Cancer Global Forecast, November 2023; 3rd party source for alteration rate); 2. Prevalence of vascular malformations with a PIK3CA mutation (Gallagher et al 2022 and several other sources); 3. Prevalence of Fabry patients (National Fabry Disease Foundation, Jan 2024); 4. Newly diagnosed (incident) solid tumors with an NRAS mutation, excluding melanoma stages 0-II (SEER, 3rd party source for alteration rate, Jan 2024); 5. Fabry disease forecasted 2024 market size per EvaluatePharma, includes Galafold® and ERTs (May 2024) Anticipated Milestone Program GENETIC DISEASE Pivotal trial start – 2025 Full Ph1-2 data – 2025 Fabry Disease ~8,000 pts3 (chronic treatment) 1st non-inhibitory αGal chaperone Clinical start – 2H 2025 Clinical start – 1Q 2025 Large US opportunity Progress 4 unnamed research programs NRAS-Driven Solid tumors ~28,000 pts4 1st NRAS-selective inhibitor Solid Tumors Clinical start – 2H 2025 PI3Kα-Driven Breast Cancer GENETIC DISEASE
RLY-2608 Unlocks Large Breast Cancer Market Robust RLY-2608 Clinical Data 9.2mo mPFS 11.4mo mPFS 9.2mo mPFS 2L only 2L+ 5.5mo mPFS for capivasertib + fulv in pt with prior CDK4/63 13 countries worldwide ~100 clinical sites 800+ patients dosed across trials ~$840M cash as of end 3Q 2024 Expected pivotal start Fulvestrant doublet CDKi + fulv triplets Other novel combos ongoing RLY-2608 Breast Cancer Combinations Relay Tx’s Extensive Global Clinical Experience Capital to Execute Significant Breast Cancer Commercial Opportunity 1. Relay Tx PIK3CA internal market forecast (patient-based – US, EU5, Japan). Forecast includes estimates for genetic testing, class share, market access, compliance, duration of therapy and assumes current PIK3CA therapy net price (primary sources: SEER; GloboCan; Global Data; Evaluate Pharma; DRG Market Forecast; PIK3CAi PIs); 2. PI3KCAmut, HR+/HER2- Advanced / Metastatic Breast Cancer (post CDK4/6) ; 3. Turner N Engl J Med 2023; 388:2058-2070 (n=355); Note: data shown are not from head-to-head studies, and no head-to-head studies have been conducted ReDiscover preliminary data as of 11/04/2024 $6B+ Current PI3Kα Pathway Total Addressable Market1 (Metastatic HR+/HER2- Breast Cancer) RLY-2608 (600mg BID) + fulvestrant2 Interim data as of 04 Nov 2024
