Castle Biosciences, Inc. · NASDAQ:CSTL

Castle Biosciences — Investor Presentation (January 2021)

43 slides from Castle Biosciences's investor presentation, Jan 13, 2021

  1. Slide 1: The Skin Cancer Diagnostics Company, January 2021

    The Skin Cancer Diagnostics Company January 2021 NASDAQ: CSTL COMPANY PRESENTATION

  2. Slide 2: Disclaimers: Forward-Looking Statements

    2 DISCLAIMERS › Forward-Looking Statements › The information in this presentation contains forward-looking statements and information within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, which are subject to

  3. Slide 3: Preliminary Q4 2020 Information

    The Skin Cancer Diagnostics Company January 2021 NASDAQ: CSTL PRELIMINARY Q42020 INFORMATION

  4. Slide 4: Preliminary Fourth Quarter and Year-end 2020 Performance Results

    4 1 Castle will report full financial results in March 2021. 2 This amount is preliminary and is subject to completion of financial closing procedures. As a result, this amount may differ from the amount that will be reflected in our financial statements as of and for the year ended December 31, 202

  5. Slide 5: Total 2020 GEP Reports and New Ordering Clinicians

    5 1 The first time a clinician ordered a particular Castle test for the first time. 2 DecisionDx-SCC orders from Aug 31, 2020 through December 31, 2020. 3 DiffDx-Melanoma orders from November 2, 2020 through December 31, 2020. Providing personalized, clinically actionable, tumor-specific genomic inf

  6. Slide 6: Third Quarter 2020 Information

    The Skin Cancer Diagnostics Company November 9, 2020 NASDAQ: CSTL THIRD QUARTER 2020 INFORMATION

  7. Slide 7: Castle Biosciences: Innovators in Proprietary Gene Expression Profile Tests

    7 Castle Biosciences Innovators in Proprietary Gene Expression Profile Tests for Dermatologic Cancers Innovative Products Strong Financials Evidence Development Improving Health Outcomes Of Patients With Skin Cancer Through Innovative, Clinically Actionable, Cost-Effective Diagnostics

  8. Slide 8: 3Q2020: Strong Financials

    3Q2020: Strong Financials 3Q20 3Q19 Nine months ended 9/30/20 Nine months ended 9/30/19 Revenue $15.2M $14.8M $45.4 $34.2M DecisionDx-Melanoma reports 4,404 4,126 11,986 11,049 DecisionDx-UM reports 318 356 985 1,092 Operating Cash Flow $(3.0)M $0.8M $10.3M $2.5M Adj. Operating Cash Flow 1 $(3.0)M $

  9. Slide 9: In-market products target an estimated $2.0B U.S. total addressable market

    9 Castle’s in-market dermatological cancer products target an estimated $2.0B U.S. total addressable market 1 1U.S. TAM = Total addressable market based on estimated patient population assuming average reimbursement rate among all payors. 2 Annual U.S. incidence for Stage I, II o r III melanoma esti

  10. Slide 10: Main focus is serving the skin cancer market

    10 MCR = Medicare. MCRA = Medicare Advantage; current customer estimates based on LTM. Our main focus is serving the skin cancer market DecisionDx-SCC and DiffDx-Melanoma are utilizing existing relationships Indication / Test outcome Trade Name Commercial Status Reimbursement Status Peer-Reviewed Pu

  11. Slide 11: The Skin Cancer Diagnostics Company

    The Skin Cancer Diagnostics Company

  12. Slide 12: DecisionDx-Melanoma: Well studied, informs cancer management decisions

    DecisionDx-Melanoma: Well studied, informs cancer management decisions *According to SORT system, used by AAD; **Through 9/30/2020; ***LTM as of 9/30/2020 >5,700 Patients included in studies including an independent validation 26 Peer-reviewed, published studies including 2 meta-analyses 1A Category

  13. Slide 13: DecisionDx-Melanoma informs two important clinical decisions

    Is the risk of SLN- positivity high enough to warrant referral for the SLNB surgery? Tumor thickness, age, and DecisionDx- Melanoma Is the risk of recurrence high enough to warrant initiation of imaging, high frequency follow-up, adjuvant therapy, and clinical trial enrollment? Tumor thickness, ulce

  14. Slide 14: DecisionDx-Melanoma workflow

    DecisionDx-Melanoma workflow: after diagnosis for more accurate prediction of risk Primary CM Tissue (FFPE) Castle CAP/CLIA Certified Lab RNA Isolation 31 Gene Expression Profile Proprietary Algorithm Predicts Class Patients with Stage I – III Melanoma Class 1: Low risk of SLN positivity (eligible T

  15. Slide 15: DecisionDx-Melanoma enables rule-out and rule-in for T1-T2 melanomas

    15 DecisionDx-Melanoma enables rule-out and rule-in for T1-T2 melanomas DecisionDx- Melanoma Result Probability of a Positive Sentinel Lymph Node1 All Ages (n=1065) ≥65 years (n=448) 55-64 years (n=247) <55 years (n=370) Class 1A 4.6% 1.6% 4.9% 7.6% Class 1B/2A 10.8% 6.9% 7.7% 19.6% Class 2B 18.8% 1

  16. Slide 16: DecisionDx-Melanoma is a significant independent predictor of outcomes

    DecisionDx-Melanoma is a significant independent predictor of outcomes 1Gerami et al. Clin Cancer Res 2015. 2Gastman et al. Jrnl Amer Acad Dermatol 2019. 3Hsueh et al. Jrnl Hematol Oncol 2017. 4Podlipnik et al. Jrnl Eur Asso Veneral and Derm 2019. 0 1 2 3 4 5 6 7 8 9 10 Archival, Multi-center1 Disea

  17. Slide 17: DecisionDx-Melanoma stratifies risk beyond AJCC staging

    DecisionDx-Melanoma stratifies risk of recurrence beyond AJCC (8th ed.) staging Stage I II III M e la n o m a -S p e c if ic S u rv iv a l (M S S ) (% ) Low Risk Stage I-IIA High Risk Stage IIB-III 99.6% ≈AJCC IA 89.5% ≈AJCC IIIA >99% ≈AJCC IA 84.7% ≈AJCC IIIB 94.8% ≈AJCC IIA 61.2% ≈AJCC IIIC+ 98% N

  18. Slide 18: 50% of patients have a change in management

    18 50% of patients have a change in management 1Berger, et al. 2016 Curr Med Res Opin; 2Dillon et al. 2018 Skin; 3Farberg et al. 2017 Jrnl Drugs Derm; 4Schuitevoerder, et al. 2018 Jrnl Drugs Derm. 4 consecutive clinical impact studies have shown 47-53% change in risk of recurrence management Changes

  19. Slide 19: DecisionDx-Melanoma informs primary treatment decisions

    19 DecisionDx-Melanoma informs both primary treatment decisions, addressing the issues of over- and under-treatment Vetto et al. Future Oncol 2019; Marks et al SKIN J Cutaneous Med 2019 What’s the risk of melanoma recurrence? Informs clinical follow- up, referrals, imaging, adjuvant therapy Class 1A

  20. Slide 20: The Skin Cancer Diagnostics Company

    The Skin Cancer Diagnostics Company

  21. Slide 21: Designed to predict individual metastatic risk (DecisionDx-SCC)

    21 Designed to predict individual metastatic risk to inform risk-appropriate management For high-risk SCC patients with one or more risk factors ~200,000 patients present with high- risk features annually; $820M U.S TAM1 Validated in 420- patient cohort of high-risk SCC from 33 U.S. centers 4 peer-r

  22. Slide 22: DecisionDx-SCC: Designed to predict metastatic risk

    22 DecisionDx-SCC: Designed to predict metastatic risk for high-risk SCC patients DecisionDx-SCC is a validated predictor of risk in uni- and multivariate analysis. Incorporation of DecisionDx-SCC with traditional risk factors can improve patient classification compared to either approach alone. Add

  23. Slide 23: DecisionDx-SCC validated to predict metastatic risk

    DecisionDx-SCC is validated to predict metastatic risk for individual SCC patients with one or more risk factors M e ta st a si s- fr e e s u rv iv a l (M FS ) Years n = 420 p < 0.0001 Kaplan-Meier Estimated MFS Wysong et al. JAAD 2020; Ibrahim et al. submitted; Data on file, Castle Biosciences. Cla

  24. Slide 24: Class 2A and 2B are strong independent predictors of metastasis

    * 24 DecisionDx-SCC Class 2A and Class 2B are strong independent predictors of metastasis 0 5 10 Hazard Ratio 0 5 Hazard Ratio Immunosuppression Tumor diameter (per cm) Perineural invasion Deep invasion Poor differentiation Class 2A Class 2B Wysong et al. JAAD 2020; Ibrahim et al. submitted; Data on

  25. Slide 25: Risk of metastasis and management plans

    • Surgery, if feasible • Consider nodal imaging / staging • Consider oncology referral • Surgery, if feasible • Nodal imaging / staging • Consultation: radiation oncology • Consultation: medical oncology Treatment plans may include: • Surgery, if feasible • Clinical nodal exam Low Intensity Moderate

  26. Slide 26: The Skin Cancer Diagnostics Company

    The Skin Cancer Diagnostics Company

  27. Slide 27: Improving diagnostic resolution for the benefit of patient care

    27 Improving diagnostic resolution for the benefit of patient care A definitive result from DecisionDx DiffDx-Melanoma in ≥96% of lesions submitted for testing Includes multiple subtypes of lesions with uncertain malignant potential Demonstrated technical success rate of 96% 5-7 day turn around time

  28. Slide 28: Unmet need in difficult-to-diagnose melanocytic lesions

    28 The unmet need in patients with a difficult-to-diagnose melanocytic lesion Of the estimated 2 million suspicious pigmented lesions biopsied annually in the U.S., approximately 300,000 of those cannot be classified with confidence as either benign tissue or melanoma through traditional histopathol

  29. Slide 29: Dermatopathologists and dermatologists work together to diagnose melanoma

    29 Dermatopathologists and dermatologists work together to diagnose melanoma A suspicious pigmented lesion is examined by a doctor or dermatologist by visual inspection and/or with a dermatoscope. If warranted, the lesion is biopsied. Lesion is examined via microscope by a dermatopathologist or path

  30. Slide 30: Uncertainty creates an over- or under-treatment dilemma

    30 The Clinical Issue: Uncertainty creates an over- or under-treatment dilemma Definitive melanoma diagnoses (invasive or in situ) Definitive benign melanocytic diagnoses SLNB Imaging Increased follow-up No additional treatment Routine follow-up Clinically evaluated suspicious pigmented / melanocyti

  31. Slide 31: DecisionDx DiffDx-Melanoma

    31 DecisionDx DiffDx-Melanoma Designed to improve diagnostic resolution for the benefit of patient care Utilizing machine-learning (AI) to obtain improved accuracy metrics and substantially reduced intermediate-risk zone, DecisionDx DiffDx-Melanoma has been demonstrated to provide a definitive resul

  32. Slide 32: DiffDx-Melanoma designed and validated to improve diagnostic resolution

    DecisionDx DiffDx-Melanoma is designed and validated to improve diagnostic resolution for the benefit of patient care All ages N=503 Age > 65 years N=178 DecisionDx DiffDx-Melanoma 95% CI DecisionDx DiffDx- Melanoma 95% CI Sensitivity 99.1% 97.9-100 99.2% 97.6-100 Specificity 94.3% 91.5-97.1 100% 10

  33. Slide 33: Improving diagnostic resolution for the benefit of patient care

    33 Improving diagnostic resolution for the benefit of patient care To aid dermatopathologists in characterizing suspicious pigmented lesions ~300,000 suspicious pigmented lesions annually; $600M U.S TAM1 Technical success rate of 96% 2 peer-reviewed publications2 to date Utilizing existing relations

  34. Slide 34: The Skin Cancer Diagnostics Company

    The Skin Cancer Diagnostics Company

  35. Slide 35: DecisionDx-UM: Uveal Melanoma

    35 : STANDARD OF CARE ~1,600 patients diagnosed in the U.S. annually ~97% of patients – no evidence of metastatic disease at the time of diagnosis ~30% will develop metastases within 3 years Uveal Melanoma – A Rare Eye Cancer 15-Gene Expression Profile (GEP) Test Low-risk: ~67% Low Intensity Managem

  36. Slide 36: Financial Overview

    The Skin Cancer Diagnostics Company FINANCIAL OVERVIEW

  37. Slide 37: Factors driving near- and long-term growth

    37 Factors driving near-and long-term growth Test Report Volume Commercial sales team expansion in 2H20, further expansion expected in 2021 Reimbursement Strong ASP growth DecisionDx-Melanoma $7,193 PAMA rate through 2021 Revenue Gross Margins 84% in Q320 Continued margin expansion of existing produ

  38. Slide 38: Continued revenue growth, driven by test report and ASP growth

    38 Continued revenue growth, driven by test report and ASP growth* 2015 2016 2017 2018 2019 Report Volume Growth DecisionDx-UM DecisionDx-Melanoma 3,956 7,490 13,445 10,614 17,055 $3.7m $14.8m $15.2m 3Q 2018 3Q 2019 3Q 2020 Revenue *3Q2020 ASP growth over 3Q2019 and 3Q2018

  39. Slide 39: Recent achievements and expected future milestones

    Recent achievements and expected future milestones All 2020 milestones achieved 2020 2021 2018 2019 39 Oct 2020: LCD expansion finalized for DecisionDx-Melanoma, effective date 12/06/20 2021: Potential draft LCD for DecisionDx-SCC and DecisionDx DiffDx- Melanoma 2022 Dec 2018: Initial LCD effective

  40. Slide 40: In-market products target an estimated $2.0B U.S. total addressable market

    40 Castle’s in-market dermatological cancer products target an estimated $2.0B U.S. total addressable market 1 1U.S. TAM = Total addressable market based on estimated patient population assuming average reimbursement rate among all payors. 2 Annual U.S. incidence for Stage I, II o r III melanoma est

  41. Slide 41: Thank You

    The Skin Cancer Diagnostics Company THANK YOU

  42. Slide 42: Use of Non-GAAP Financial Measures

    › In this presentation, we use the metric of Adjusted Operating Cash Flow, which is a non-GAAP financial measure and is not calculated in accordance with generally accepted accounting principles in the United States (GAAP). This non-GAAP financial measure reflects adjustments to net cash provided by

  43. Slide 43: Reconciliation of Non-GAAP Financial Measures

    Reconciliation of Non-GAAP Financial Measures (UNAUDITED) The table below presents the reconciliation of adjusted operating cash flow, which is a non-GAAP measure. See "Use of Non-GAAP Financial Measures (UNAUDITED)" above for further information regarding the Company's use of non-GAAP financial mea

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