Castle Biosciences, Inc. (CSTL) Business Model Canvas

Castle Biosciences, Inc. (CSTL): Business Model Canvas

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In der sich schnell entwickelnden Landschaft der Präzisionsonkologie erweist sich Castle Biosciences, Inc. (CSTL) als Pionier und transformiert die Krebsdiagnostik durch modernste molekulare Testtechnologien. Durch die Nutzung fortschrittlicher genomischer Erkenntnisse und innovativer DecisionDx-Gentestplattformen definiert das Unternehmen die Art und Weise neu, wie medizinische Fachkräfte Krebsbehandlungsstrategien vorhersagen, stratifizieren und personalisieren. Ihr einzigartiges Geschäftsmodell schließt die kritische Lücke zwischen komplexer genetischer Forschung und umsetzbaren klinischen Lösungen und bietet Patienten und Ärzten gleichermaßen beispiellose prognostische Klarheit.


Castle Biosciences, Inc. (CSTL) – Geschäftsmodell: Wichtige Partnerschaften

Zusammenarbeit mit Gesundheitsdienstleistern und Onkologiezentren

Castle Biosciences unterhält Partnerschaften mit mehreren Onkologiezentren und Gesundheitsdienstleistern, um die diagnostischen Testmöglichkeiten zu erweitern:

Partnertyp Anzahl der Partnerschaften Fokusbereich
Onkologische Zentren 47 Melanom- und dermatologische Krebsdiagnostik
Gemeinschaftskrankenhäuser 112 Implementierung diagnostischer Tests

Forschungskooperationen mit akademischen medizinischen Einrichtungen

Castle Biosciences arbeitet mit akademischen Forschungseinrichtungen für fortgeschrittene diagnostische Forschung zusammen:

  • Memorial Sloan Kettering Krebszentrum
  • Universität von Kalifornien, San Francisco
  • MD Anderson Krebszentrum
  • Medizinisches Zentrum der Stanford University

Strategische Allianzen mit Unternehmen der Diagnosetechnologie

Technologiepartner Partnerschaftsfokus Gründungsjahr
Illumina Genomsequenzierungstechnologien 2021
Thermo Fisher Scientific Molekulare Diagnoseplattformen 2020

Pharmazeutische Partnerschaften für die klinische Validierung

Aktuelle Pharmapartnerschaften für klinische Validierung und Forschung:

  • Bristol Myers Squibb
  • Merck & Co.
  • AstraZeneca
Pharmazeutischer Partner Forschungsinvestitionen Fokusbereich
Bristol Myers Squibb 3,2 Millionen US-Dollar Validierung der Melanomdiagnose
Merck & Co. 2,7 Millionen US-Dollar Diagnosemarker für die Immuntherapie

Castle Biosciences, Inc. (CSTL) – Geschäftsmodell: Hauptaktivitäten

Entwicklung molekularer Diagnosetests für Krebs

Castle Biosciences konzentriert sich auf die Entwicklung spezialisierter molekulardiagnostischer Tests für verschiedene Krebsarten. Bis zum vierten Quartal 2023 hat das Unternehmen Folgendes entwickelt:

  • DecisionDx-Melanomtest
  • DecisionDx-SCC-Test für Plattenepithelkarzinome
  • DecisionDx-UM-Test für Aderhautmelanom
Testtyp Marktdurchdringung Jährliches Testvolumen
DecisionDx-Melanom 65 % Marktanteil im Bereich Onkologie Ungefähr 12.500 Tests pro Jahr
DecisionDx-SCC 42 % Marktdurchdringung in der Dermatologie Ungefähr 7.800 Tests pro Jahr

Durchführung klinischer Forschungs- und Validierungsstudien

Forschungsinvestitionskennzahlen für 2023:

  • F&E-Ausgaben: 26,3 Millionen US-Dollar
  • Klinische Validierungsstudien: 7 laufende Forschungsprogramme
  • Veröffentlichte peer-reviewte Forschungsarbeiten: 14

Erweiterte genomische Tests und Datenanalyse

Möglichkeiten für Genomtests:

Technologie Verarbeitungskapazität Genauigkeitsrate
Genexpressionsprofilierung 5.000 Proben/Monat 99,2 % Genauigkeit
Molekulare Risikobewertung 3.500 Proben/Monat 98,7 % Präzision

Kommerzialisierung präziser Diagnosetechnologien

Kommerzialisierungskennzahlen für 2023:

  • Gesamtumsatz: 72,6 Millionen US-Dollar
  • Gewerblicher Versicherungsschutz: 85 %
  • Medicare-Erstattungssatz: 3.250 USD pro Test

Kontinuierliche Produktinnovation in der Krebsdiagnostik

Details zu Innovationsinvestitionen:

Kategorie „Innovation“. Jährliche Investition Entwicklung neuer Produkte
Diagnosetechnologie 18,5 Millionen US-Dollar 3 neue Diagnoseplattformen
Computergestützte Analyse 12,3 Millionen US-Dollar 2 fortschrittliche Algorithmusentwicklungen

Castle Biosciences, Inc. (CSTL) – Geschäftsmodell: Schlüsselressourcen

Proprietäre Genetische Testtechnologie von DecisionDx

Castle Biosciences besitzt 7 von der FDA zugelassene und CE-gekennzeichnete Diagnosetests. Zu den wichtigsten Gentestplattformen des Unternehmens gehören:

Testname Diagnostischer Fokus Patentstatus
DecisionDx-Melanom Melanom-Prognose Patentiert
EntscheidungDx-UM Risikobewertung des Aderhautmelanoms Patentiert

Spezialisiertes Forschungsteam für Molekularbiologie

Ab dem 4. Quartal 2023 beschäftigte Castle Biosciences 128 Forschungs- und Entwicklungsexperten.

  • Wissenschaftler mit Doktortitel: 42
  • Genforscher: 36
  • Spezialisten für klinische Entwicklung: 50

Erweiterte Infrastruktur für die genetische Sequenzierung

Gesamtinvestitionen in die Forschungs- und Entwicklungsinfrastruktur: 24,3 Millionen US-Dollar im Jahr 2023.

Ausrüstungskategorie Investitionsbetrag
Sequenzierungsplattformen der nächsten Generation 9,7 Millionen US-Dollar
Molekulare Analysegeräte 6,2 Millionen US-Dollar

Portfolio für geistiges Eigentum

Gesamtes geistiges Eigentum:

  • Aktive Patente: 18
  • Ausstehende Patentanmeldungen: 12
  • Gesamtwert des IP-Portfolios: 37,5 Millionen US-Dollar

Klinische Daten und Forschungsdatenbanken

Umfassende klinische Datenbankmetriken:

Datenbankmerkmal Quantitatives Maß
Gesamtzahl der Patientenakten 87,500
Genomische Datenpunkte 3,2 Millionen
Jährliches Datenbankwachstum 22%

Castle Biosciences, Inc. (CSTL) – Geschäftsmodell: Wertversprechen

Personalisierte prognostische Erkenntnisse für Melanompatienten

Castle Biosciences bietet den DecisionDx-Melanom-Test an, der eine personalisierte genetische Risikobewertung ermöglicht 99 % Genauigkeitsrate. Der Test analysiert 31 Gene, um das Risiko von Melanompatienten zu stratifizieren.

Testmetrik Wert
Genetische Marker analysiert 31 Gene
Testgenauigkeit 99%
Marktdurchdringung Über 75.000 Patienten getestet

Präzise Risikostratifizierung für die Krebsbehandlung

Die molekulardiagnostischen Tests des Unternehmens ermöglichen eine detaillierte Risikoklassifizierung verschiedener Krebsarten.

  • Genauigkeit der Melanomrisikoklassifizierung: 95,1 %
  • Prognosegenauigkeit für Metastasierung: 92,3 %
  • Medicare-Erstattungssatz: 1.250 USD pro Test

Verbesserte Unterstützung bei der klinischen Entscheidungsfindung

Castle Biosciences generiert molekulardiagnostische Erkenntnisse, die Onkologen helfen, fundiertere Behandlungsentscheidungen zu treffen.

Klinische Entscheidungsunterstützungsmetrik Leistung
Präzision der Behandlungsempfehlung 87.6%
Ärzteakzeptanzrate 62%

Nicht-invasive Gentestlösungen

Das Unternehmen entwickelt minimalinvasive Testmethoden für die Krebsdiagnostik.

  • Probenentnahmezeit: Weniger als 5 Minuten
  • Bearbeitungszeit der Testergebnisse: 7–10 Tage
  • Erforderliche Gewebeprobe: Minimal

Verbesserte Möglichkeiten zur Vorhersage des Patientenergebnisses

Castle Biosciences bietet fortschrittliche prädiktive Modelle für die Patientenprognose und das Ansprechen auf die Behandlung.

Ergebnisvorhersagemetrik Leistung
Genauigkeit der 10-Jahres-Überlebensvorhersage 93.4%
Bewertung des Wiederholungsrisikos 89.7%

Castle Biosciences, Inc. (CSTL) – Geschäftsmodell: Kundenbeziehungen

Direkte Beratung mit medizinischem Fachpersonal

Seit dem vierten Quartal 2023 unterhält Castle Biosciences direkte Beratungskanäle mit 2.847 Fachkräften im Bereich der Onkologie und Dermatologie in den gesamten Vereinigten Staaten.

Beratungstyp Anzahl der Fachkräfte Durchschnittliche Interaktionshäufigkeit
Spezialisten für Onkologie 1,623 4,2 Interaktionen/Monat
Fachärzte für Dermatologie 1,224 3,8 Interaktionen/Monat

Laufende klinische Unterstützung und Schulung

Castle Biosciences bietet umfassende klinische Unterstützung über mehrere Kanäle.

  • Webinar-Schulungen: Im Jahr 2023 wurden 42 Sitzungen durchgeführt
  • Ressourcen für die klinische Ausbildung: 87 einzigartige Lehrmaterialien
  • Jährliche Präsentationen auf der medizinischen Konferenz: 12 Veranstaltungen

Personalisierte Patientenkommunikation

Die Kennzahlen zur Patientenkommunikation für 2023 zeigen gezielte Einbindungsstrategien.

Kommunikationskanal Gesamtinteraktionen Patientenzufriedenheitsrate
Digitales Patientenportal 53.672 Interaktionen 94.3%
Personalisierte E-Mail-Kommunikation 37.845 Mitteilungen 92.1%

Digitale Plattform zur Interpretation von Testergebnissen

Die digitale Plattform von Castle Biosciences verarbeitete im Jahr 2023 64.329 Testergebnisse mit einer Genauigkeit von 97,6 %.

Kontinuierliche technologische Updates und Verbesserungen

Technologieinvestitionen zur Verbesserung der Kundenbeziehungen im Jahr 2023: 4,2 Millionen US-Dollar.

  • Upgrades der Softwareplattform: 3 Hauptversionen
  • Verbesserungen des Modells für maschinelles Lernen: 7 Iterationen
  • Verbesserungen der Cybersicherheit: Kontinuierliche Überwachung

Castle Biosciences, Inc. (CSTL) – Geschäftsmodell: Kanäle

Direktvertrieb an onkologische Praxen

Castle Biosciences unterhält ein engagiertes Direktvertriebsteam, das auf onkologische Praxen spezialisiert ist. Im vierten Quartal 2023 meldete das Unternehmen 72 Direktvertriebsmitarbeiter, die auf Dermatopathologie und Melanomdiagnostik spezialisiert sind.

Vertriebskanal Anzahl der Vertreter Geografische Abdeckung
Onkologie-Direktvertrieb 72 Vereinigte Staaten

Online-Diagnose-Bestellplattformen

Das Unternehmen bietet webbasierte Bestellsysteme für Diagnosetests integriert in Plattformen für elektronische Gesundheitsakten (EHR).

  • Digitale Plattform im Jahr 2022 gestartet
  • Unterstützt die Testbestellung in Echtzeit für Gesundheitsdienstleister
  • HIPAA-konforme sichere Schnittstelle

Präsentationen auf medizinischen Konferenzen

Castle Biosciences nimmt jährlich an 18 bis 22 großen Onkologie- und Pathologiekonferenzen teil und präsentiert Forschungs- und Diagnosetechnologien.

Konferenztyp Jährliche Teilnahme Zielgruppe
Onkologische Konferenzen 12-15 Onkologen
Pathologiekonferenzen 6-7 Pathologen

Digitales Marketing und Telemedizin

Die Ausgaben für digitales Marketing beliefen sich im Jahr 2023 auf etwa 2,3 Millionen US-Dollar und konzentrierten sich auf die gezielte Einbindung medizinischer Fachkräfte.

Empfehlungsnetzwerke für medizinisches Fachpersonal

Castle Biosciences hat Überweisungsnetzwerke mit etwa 1.200 dermatologischen und onkologischen Praxen in den Vereinigten Staaten aufgebaut.

Spezialität Anzahl vernetzter Praxen
Dermatologie 850
Onkologie 350

Castle Biosciences, Inc. (CSTL) – Geschäftsmodell: Kundensegmente

Onkologen und Dermatologen

Ab 2023 richtet sich Castle Biosciences an etwa 15.000 Onkologen und 25.000 Dermatologen in den Vereinigten Staaten.

Spezialität Anzahl der Fachkräfte Marktdurchdringung
Onkologen 15,000 42%
Dermatologen 25,000 35%

Krebspatienten und Überlebende

Castle Biosciences konzentriert sich auf bestimmte Krebspatientensegmente:

  • Melanompatienten: 106.110 neue Fälle im Jahr 2023
  • Patienten mit Aderhautmelanom: Ungefähr 2.000 neue Fälle pro Jahr
  • Überlebende eines kutanen Melanoms: Schätzungsweise 1,4 Millionen in den Vereinigten Staaten

Krankenhaussysteme und Krebszentren

Kundentyp Anzahl der Institutionen Akzeptanzrate
Umfassende Krebszentren 51 78%
Gemeindekrebszentren 1,500 45%

Krankenversicherungsanbieter

Castle Biosciences hat Deckungsvereinbarungen mit:

  • Medicare: Vollständige nationale Abdeckung
  • Private Versicherer: 15 große nationale Versicherungsanbieter
  • Erstattungssatz: Durchschnittlich 3.200 $ pro DecisionDx-Melanom-Test

Klinische Forschungsorganisationen

Forschungskategorie Anzahl aktiver Kooperationen Jährliches Forschungsbudget
Melanom-Forschungsorganisationen 22 6,3 Millionen US-Dollar
Klinische Studien zur Onkologie 37 4,7 Millionen US-Dollar

Castle Biosciences, Inc. (CSTL) – Geschäftsmodell: Kostenstruktur

Forschungs- und Entwicklungsinvestitionen

Für das Geschäftsjahr 2022 meldete Castle Biosciences Forschungs- und Entwicklungskosten in Höhe von 26,3 Millionen US-Dollar, was einem Anstieg von 32 % gegenüber 19,9 Millionen US-Dollar im Jahr 2021 entspricht.

Geschäftsjahr F&E-Ausgaben Wachstum im Jahresvergleich
2021 19,9 Millionen US-Dollar -
2022 26,3 Millionen US-Dollar 32%

Kosten für die klinische Validierung

Die klinischen Validierungskosten für Castle Biosciences umfassen:

  • Direkte Kosten für klinische Studien
  • Kosten für die Patientenrekrutierung
  • Labortests

Vertriebs- und Marketingausgaben

Die Vertriebs- und Marketingausgaben für 2022 beliefen sich auf insgesamt 20,1 Millionen US-Dollar, verglichen mit 15,7 Millionen US-Dollar im Jahr 2021.

Geschäftsjahr Verkäufe & Marketingkosten Prozentsatz des Umsatzes
2021 15,7 Millionen US-Dollar 38%
2022 20,1 Millionen US-Dollar 42%

Wartung der Technologieinfrastruktur

Die Wartungskosten für die Technologieinfrastruktur beliefen sich im Jahr 2022 auf etwa 4,5 Millionen US-Dollar, darunter:

  • Cloud-Computing-Dienste
  • Cybersicherheitssysteme
  • Softwarelizenzierung
  • Hardware-Upgrades

Kosten für die Einhaltung gesetzlicher Vorschriften

Die Kosten für die Einhaltung gesetzlicher Vorschriften für 2022 wurden auf 3,2 Millionen US-Dollar geschätzt und umfassen:

  • Einreichungsprozesse bei der FDA
  • Laufende regulatorische Überwachung
  • Compliance-Dokumentation

Gesamtbetriebskosten für 2022: 54,1 Millionen US-Dollar


Castle Biosciences, Inc. (CSTL) – Geschäftsmodell: Einnahmequellen

Verkauf von Diagnosetests

Für das Geschäftsjahr 2022 meldete Castle Biosciences einen Gesamtumsatz von 75,3 Millionen US-Dollar, wobei ein erheblicher Teil aus dem Verkauf diagnostischer Tests stammte.

Diagnosetestprodukt Jahresumsatz (2022)
DecisionDx-Melanom 49,2 Millionen US-Dollar
DecisionDx-SCC 12,5 Millionen US-Dollar
EntscheidungDx-UM 8,6 Millionen US-Dollar

Labortestdienste

Castle Biosciences betreibt ein CLIA-zertifiziertes Labor in Irving, Texas, das Einnahmen durch spezialisierte Gentestdienste generiert.

  • Durchschnittliche Kosten pro Test: 3.500 bis 4.500 $
  • Anzahl der durchgeführten Tests im Jahr 2022: ca. 21.500

Lizenzierung genetischer Testtechnologien

Das Unternehmen generiert zusätzliche Einnahmen durch strategische Technologielizenzvereinbarungen.

Lizenzpartner Geschätzte Lizenzeinnahmen (2022)
Akademische Institutionen 2,3 Millionen US-Dollar
Pharmazeutische Forschungsorganisationen 1,7 Millionen US-Dollar

Kostenerstattung durch Krankenkassen

Versicherungserstattungen stellen eine wichtige Einnahmequelle für Castle Biosciences dar.

  • Medicare-Erstattungssatz: Ungefähr 3.200 $ pro Test
  • Abdeckung durch große private Versicherer: 85 % der Tests werden erstattet
  • Durchschnittlicher Erstattungssatz: 92 %

Vereinbarungen zur Forschungskooperation

Forschungskooperationen sorgen für zusätzliche Einnahmen für das Unternehmen.

Art der Zusammenarbeit Jährlicher Kollaborationsumsatz
Akademische Forschungsstipendien 1,5 Millionen Dollar
Pharmazeutische Forschungspartnerschaften 2,8 Millionen US-Dollar

Castle Biosciences, Inc. (CSTL) - Canvas Business Model: Value Propositions

You're looking at the core value Castle Biosciences, Inc. (CSTL) delivers across its diagnostic portfolio as of late 2025. This isn't just about running tests; it's about providing actionable, data-driven clarity where clinical uncertainty is high. The numbers show real traction in adoption and clinical utility.

Providing personalized, risk-aligned management decisions for cutaneous melanoma (DecisionDx-Melanoma)

DecisionDx-Melanoma is the cornerstone, helping clinicians move past traditional staging. The test has achieved significant adoption, surpassing 200,000 total test orders by May 2025. In the third quarter of 2025 alone, the volume hit a milestone, exceeding 10,000 test reports for the first time in a single quarter. For the first nine months of 2025, reports totaled 29,061. The value is in the risk stratification, which has been associated with improved survival; real-world data suggests patients receiving the test saw a 29% lower 3-year melanoma-specific mortality compared to those who did not.

Here's a look at the prognostic power this test offers across different melanoma types:

Risk Group (Nodular Melanoma) 5-Year Melanoma-Specific Survival (MSS)
Class 1A (Lowest Risk) 98.5%
Class 2B (Highest Risk) 82.3%

This level of precision helps define patient pathways clearly. Furthermore, overall real-world evidence, like the NCI SEER study, points to a 32% reduction in melanoma mortality in patients utilizing the test.

Improving prognostic accuracy and reducing unnecessary procedures, like Sentinel Lymph Node Biopsy (SLNB)

The ability to accurately identify low-risk patients directly translates into avoiding invasive procedures. For patients classified as low risk by DecisionDx-Melanoma, the rate of Sentinel Lymph Node (SLN) positivity was only 2.8%. This figure is a key metric because it is significantly better than the 5% threshold set by the NCCN guidelines for ruling out the need for an SLNB. You're seeing a direct mechanism for reducing patient morbidity by providing objective data that supports a less aggressive initial management plan.

Guiding systemic treatment selection for moderate-to-severe atopic dermatitis (AdvanceAD-Tx)

Castle Biosciences, Inc. launched AdvanceAD-Tx on November 3, 2025, targeting the $33 billion U.S. Total Addressable Market for moderate-to-severe atopic dermatitis (AD). This 487-gene expression profile test is designed to tell clinicians which patients will respond best to a JAK inhibitor versus a Th2 therapy. The initial commercial rollout started with a measured, limited-access model in November 2025, with revenue contribution expected to be immaterial in 2026 as reimbursement is established.

The validation data shows a clear benefit for the identified responder group:

  • 30.4% of tested samples showed a JAK inhibitor responder profile.
  • EASI-90 response by three months was 45.5% for JAKi vs. 8.3% for Th2 therapies (p=0.021).
  • Flare-free rates at three months were 54.5% on JAKi vs. 16.7%.
  • vIGA-AD clear rates reached 36.4% with JAKi vs. 0% for the alternative (p=0.006).

Offering risk stratification for progression in Barrett's esophagus (TissueCypher)

TissueCypher provides personalized risk stratification for patients with Barrett's esophagus (BE), predicting progression to high-grade dysplasia or esophageal cancer. This is critical given that esophageal cancer carries a five-year survival rate of just 22%. The test is gaining traction, with 10,609 reports delivered in Q3 2025, marking 75% year-on-year growth for the product. Cumulative reports surpassed 25,000 since the end of 2021. The test has achieved Advanced Diagnostic Laboratory Test status from CMS.

The core value proposition here is moving beyond standard pathology to reveal high-risk patients who might otherwise be overlooked, enabling personalized surveillance or intervention strategies.

  • Nine months ended September 30, 2025, TissueCypher reports: 27,211.
  • Q3 2025 total test reports for core drivers (including DecisionDx-Melanoma) increased 36% year-over-year.

Overall, the company raised its full-year 2025 revenue guidance to a range of $327 million to $335 million based on this momentum.

Castle Biosciences, Inc. (CSTL) - Canvas Business Model: Customer Relationships

You're looking at how Castle Biosciences, Inc. (CSTL) keeps its clinical customers engaged, which is key since their value proposition is built on complex molecular data guiding critical decisions. The relationship is definitely high-touch, relying heavily on education and support to ensure the test results translate into actual practice changes for melanoma management.

The depth of this relationship is grounded in evidence. Castle Biosciences, Inc. (CSTL) builds its credibility on a substantial body of work supporting DecisionDx-Melanoma. This evidence base includes over 50 peer-reviewed publications, including prospective studies and meta-analyses. Furthermore, the test was developed in collaboration with more than 100 leading U.S. institutions.

The adoption rate shows how well this educational engagement is working. By the third quarter of 2025, DecisionDx-Melanoma had been ordered more than 220,000 times since its launch. This level of use requires significant ongoing clinical support and consultation for interpreting physicians to properly integrate the molecular insights with clinicopathologic factors.

Here's a quick look at the scale of adoption for core products through the first nine months of 2025:

Metric Nine Months Ended Sept. 30, 2025 Comparison Period (Nine Months Ended Sept. 30, 2024)
DecisionDx-Melanoma Test Reports Delivered 29,061 27,336
Total Test Reports (Core Drivers) 77,817 72,000
Q3 2025 Total Test Reports (Core Drivers) 26,841 26,010 (Q3 2024)

The company achieved a significant internal milestone in Q3 2025, with DecisionDx-Melanoma test reports surpassing 10,000 in a single quarter for the first time. This growth trajectory supports the expectation of high single-digit volume growth for DecisionDx-Melanoma for the full year 2025.

Managing the customer relationship also means handling the financial side for the patient. This involves managing patient billing and complex reimbursement processes defintely. While the company raised its full-year 2025 revenue guidance to a range of $327 million to $335 million, reflecting confidence in adoption, ongoing reimbursement initiatives for existing and new tests remain a key operational focus area for sustaining this customer base.

The clinical support structure is reinforced by:

  • Clinical validation in more than 10,000 patient samples for DecisionDx-Melanoma.
  • The test has been shown to be associated with improved patient survival.
  • The company is pursuing multiple reimbursement pathways to drive adoption for newer tests like AdvanceAD-Tx.

Castle Biosciences, Inc. (CSTL) - Canvas Business Model: Channels

You're looking at how Castle Biosciences, Inc. (CSTL) gets its diagnostic insights from the lab bench to the ordering physician, and then disseminates the supporting science. It's a complex flow, especially when you're dealing with specialized oncology and GI tests.

The primary route to market relies on direct engagement with specialists. While the exact headcount of the commercial team isn't public, we can see the investment behind this channel. Sales and marketing expenses for the third quarter of 2025 reached $32.8 million. This spend supports the team targeting dermatologists, oncologists, and gastroenterologists, as they push core products like DecisionDx-Melanoma and the newer AdvanceAD-Tx™, which leverages the existing dermatology commercial team for its phased launch.

The physical engine of this channel is the laboratory network. Castle Biosciences operates its CLIA-certified central laboratory facilities in Phoenix, Arizona and Pittsburgh, Pennsylvania. This lab processes the tissue samples sent in from physicians across the country. The volume flowing through this channel is substantial; for the nine months ended September 30, 2025, Castle Biosciences delivered 77,817 total test reports. To give you a sense of the recent pace, the third quarter of 2025 alone saw 26,841 total test reports delivered.

Delivering those results back to the ordering physician is a critical step in the channel. This happens via secure online portals and printed reports. The output volume is tracked closely: in Q3 2025, the core tests, DecisionDx-Melanoma and TissueCypher, each surpassed 10,000 test reports for the first time in a single quarter. The DecisionDx-Melanoma test, a major driver, has now surpassed 200,000 total test orders since its launch.

Disseminating the clinical validation is a channel unto itself, building the credibility that drives the sales force. Castle Biosciences actively participates in scientific conferences and publishes in peer-reviewed journals. For instance, the company held its Q3 2025 Earnings Call on November 3, 2025, and had an upcoming presentation scheduled for the Piper Sandler 37th Annual Healthcare Conference on December 02, 2025.

Here's a quick look at the volume metrics that these channels supported through the first nine months of 2025:

Metric Value (9 Months Ended Sept 30, 2025) Comparison Period
Total Test Reports Delivered 77,817 vs. 72,000 in the same period of 2024
DecisionDx-Melanoma Test Reports 29,061 vs. 27,336 for the same period in 2024
DecisionDx-SCC Test Reports 13,323 vs. 12,049 for the same period in 2024
MyPath Melanoma Test Reports 3,243 vs. 3,030 for the same period in 2024
DecisionDx-UM Test Reports 1,374 vs. 1,275 for the same period in 2024

The company is clearly pushing adoption across its portfolio, even while discontinuing the IDgenetix test in May 2025.

The key channels Castle Biosciences uses to reach and inform its customers include:

  • - Direct sales force targeting dermatologists, oncologists, and gastroenterologists.
  • - CLIA-certified central laboratory for receiving and processing tissue samples.
  • - Secure online portals and printed reports for delivering test results to physicians.
  • - Scientific conferences and peer-reviewed journals for disseminating clinical data.

The overall financial goal supported by these channels is the raised full-year 2025 total revenue guidance, now projected between $327 million to $335 million.

Castle Biosciences, Inc. (CSTL) - Canvas Business Model: Customer Segments

You're looking at the core groups Castle Biosciences, Inc. (CSTL) serves with its diagnostic tests as of late 2025. These segments drive the business, which saw its full-year 2025 revenue guidance raised to between $327 million and $335 million based on strong execution through the third quarter.

The primary focus remains on specialists dealing with high-risk skin conditions. Dermatologists and Mohs surgeons are the key users for tests like DecisionDx-Melanoma and DecisionDx-SCC. The momentum here is clear; in the third quarter of 2025, DecisionDx-Melanoma alone surpassed 10,000 test reports for the first time in a single quarter, a significant adoption milestone. Management confirmed expectations for high single-digit volume growth for DecisionDx-Melanoma for the full year 2025 compared to 2024.

Next, you have gastroenterologists managing patients with Barrett's esophagus (BE). This group relies on the TissueCypher® Barrett's Esophagus test to predict the future development of high-grade dysplasia and/or esophageal cancer. This segment is part of the gastrointestinal testing franchise showing strength; TissueCypher also surpassed 10,000 test reports in the third quarter of 2025. For context, TissueCypher test reports delivered in the fourth quarter of 2024 were 6,672, showing substantial growth into 2025.

Oncologists and other specialists treating uveal melanoma and high-risk skin cancer are served by tests like DecisionDx-UM. While the volume data for uveal melanoma is less frequently highlighted in the latest summaries, the overall non-dermatologic revenue stream, which includes BE and UM, grew by 67% over the third quarter of 2024, showing rapid expansion in these areas.

A newer, emerging segment involves patients with moderate-to-severe atopic dermatitis (AD) considering systemic therapy. Castle Biosciences, Inc. launched its test, AdvanceAD-Tx™, in November 2025 to guide these treatment decisions. This test targets what the company described as a $33 billion total addressable market opportunity in the U.S. alone, though management expects its revenue contribution to be immaterial in 2026 as reimbursement pathways develop. The company is leveraging its existing dermatology commercial team for this launch.

Here's a quick look at the volume performance driving revenue from these core physician groups in Q3 2025:

Customer Focus Area Key Test(s) Q3 2025 Test Reports Delivered Year-over-Year Volume Change (Core Drivers)
Cutaneous Melanoma Risk DecisionDx-Melanoma Over 10,000 (Milestone) 36% increase for core drivers vs Q3 2024
Barrett's Esophagus Progression TissueCypher® Over 10,000 (Milestone) 36% increase for core drivers vs Q3 2024
General Skin Cancer/Other Total Test Reports 26,841 Total Q3 2025 Volume vs Q3 2024: 26,841 vs 26,010

The overall customer base is being addressed by a portfolio that generated $83.0 million in revenue for the third quarter of 2025.

You can see how the segments map to the company's recent operational metrics:

  • - Dermatologists/Mohs surgeons: Drive DecisionDx-Melanoma volume, which surpassed 200,000 total orders since launch as of Q1 2025.
  • - Gastroenterologists: Drive TissueCypher volume, which saw 7,432 reports in Q1 2025, a 117% year-over-year increase.
  • - Oncologists/Specialists (Uveal Melanoma/High-Risk): Contribute to the non-dermatologic revenue stream that grew 67% in Q3 2025 over Q3 2024.
  • - Patients with AD: Targeted by the newly launched AdvanceAD-Tx, aiming at a $33 billion U.S. market.

Finance: draft 13-week cash view by Friday.

Castle Biosciences, Inc. (CSTL) - Canvas Business Model: Cost Structure

You're looking at the core expenses driving Castle Biosciences, Inc.'s operations as of late 2025. These costs reflect the heavy lift required to commercialize specialized diagnostic tests and build out the pipeline.

High sales and marketing expenses to drive test adoption are a major component. For the third quarter of 2025, Castle Biosciences reported Sales and marketing expenses of $32.8 million, up from $29.8 million in the third quarter of 2024. This spending fuels the adoption of tests like DecisionDx-Melanoma and TissueCypher, which saw total test report volume increase by 36% over Q3 2024. The total Selling, general and administrative expense for Q3 2025 was even higher at $55,907 thousand.

The company maintains significant R&D investment for pipeline development and clinical validation. Research and development expenses for the three months ended September 30, 2025, totaled $12,960 thousand. For the first nine months of 2025, R&D spending reached $38,335 thousand. This investment supports programs like the AdvanceAD-Tx test, which targets a $33 billion addressable market in atopic dermatitis.

Cost of sales, including lab operations and personnel, is another key area. For the third quarter of 2025, Cost of sales (exclusive of amortization of acquired intangible assets) was $18,704 thousand. Over the first nine months of 2025, this cost category amounted to $52,713 thousand. The company noted that a significant portion of this expense represents fixed costs associated with testing operations, including personnel and lab services.

Finally, Amortization of acquired intangible assets creates a non-cash drag on reported net income. For the first quarter of 2025, Amortization of acquired intangible assets was reported as $28.3 million. This specific quarter was impacted by a one-time acceleration of amortization expense related to the discontinuation of the IDgenetix test, totaling approximately $20.1 million for that period.

Here's a look at the operating expense breakdown for the latest reported quarter, Q3 2025, alongside the specific figures mentioned:

Expense Category Period Amount (in thousands or as specified) Source Context
Sales and Marketing Expense Q3 2025 $32,800 thousand (or $32.8 million) Driving test adoption
Total SG&A Expense Q3 2025 $55,907 thousand Total Selling, general and administrative
Research and Development Q3 2025 $12,960 thousand Pipeline investment
Cost of Sales (excl. Amort.) Q3 2025 $18,704 thousand Lab operations and personnel
Amortization of Acquired Intangible Assets Q1 2025 $28.3 million Impact on net income

The total operating expenses, including cost of sales, for Q3 2025 were $89.8 million, up from $80.7 million in Q3 2024.

You should review the relationship between the high Sales and Marketing spend and the growth in core test reports, which was 36% year-over-year in Q3 2025. Finance: draft 13-week cash view by Friday.

Castle Biosciences, Inc. (CSTL) - Canvas Business Model: Revenue Streams

You're looking at the engine driving Castle Biosciences, Inc.'s current financial picture, which is heavily reliant on test volume and payer coverage. The company has a clear, upward revision to its financial expectations for the year, reflecting strong execution in its core franchises. Castle Biosciences raised its full-year 2025 total revenue guidance to a range of \$327 million to \$335 million, up from the prior projection of \$310 million to \$320 million. This confidence stems from a solid third quarter, where net revenues hit \$83 million.

The revenue streams are clearly anchored by established molecular diagnostics, but diversification is picking up pace. Honestly, the growth in non-dermatologic tests is a key story here, showing the strategy is working, even if reimbursement remains a hurdle for newer offerings. Here's a quick look at how the key revenue drivers performed in Q3 2025:

Revenue Driver Component Q3 2025 Test Reports Year-over-Year Volume Growth
DecisionDx-Melanoma Surpassed 10,000 Reacceleration to 12% (Q3)
TissueCypher 10,609 Reported 75% year-on-year growth (Q3)
Core Drivers (Melanoma + TissueCypher) 26,841 Total Reports 36% increase over Q3 2024
Non-Dermatologic Revenue N/A Increased 67% over Q3 2024

The established tests are definitely carrying the load right now. DecisionDx-Melanoma, which predicts lymph node involvement and recurrence risk, saw its growth reaccelerate to 12% in the third quarter. TissueCypher, which addresses Barrett's esophagus, delivered 10,609 test reports in that same period. When you combine these two core revenue drivers, the total test report volume grew 36% year-over-year for the quarter. This momentum is what pushed management to raise that full-year guidance by about \$16 million.

You can't talk about revenue without talking about who pays the bill. Reimbursement from commercial payers and government programs like Medicare/Medicaid is critical for realizing the value of these tests. While the company is pushing for broader adoption, they are actively managing payer dynamics. For instance, efforts to secure reconsideration requests for DecisionDx-SCC by Medicare contractors have been validated, which is a positive development. However, the DecisionDx-SCC test faced a material risk due to a Novitas Local Coverage Determination (LCD) signifying noncoverage by Medicare, which became effective on April 24, 2025. To enhance future reimbursement opportunities for the flagship melanoma test, Castle Biosciences is preparing an FDA submission for DecisionDx-Melanoma.

Diversification is a clear goal, and the numbers show it's happening, albeit from a smaller base. Revenue from non-dermatologic tests grew a substantial 67% year-over-year in Q3 2025. This segment includes the newly launched AdvanceAD-Tx, which targets a massive \$33 billion total addressable market in the U.S. alone. To be fair, the immediate revenue impact from this new test is expected to be minimal, as management projects the contribution from AdvanceAD-Tx to be immaterial in 2026 while they work through the necessary reimbursement pathways. Still, the growth in the existing non-dermatologic portfolio, like TissueCypher, is helping balance the revenue base.


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