DecisionDx®-Melanoma Test Ordered More Than 200,000 Times for Patients Diagnosed with Cutaneous Melanoma

FRIENDSWOOD, Texas, April 28, 2025 (GLOBE NEWSWIRE) -- Castle Biosciences, Inc. (Nasdaq: CSTL), a company improving health through innovative tests that guide patient care, today announced its achievement of surpassing a significant milestone of 200,000 DecisionDx-Melanoma clinical test orders. DecisionDx-Melanoma is a 31-gene expression profile test that provides comprehensive, personalized results designed to improve risk-aligned management decisions for patients with stage I-III cutaneous melanoma.

“We are excited by this milestone, which we believe is a testament to our shared desire with the melanoma healthcare community to improve the lives of patients,” said Derek Maetzold, president and chief executive officer of Castle Biosciences. “With every DecisionDx-Melanoma test, we aim to enable clinicians to make more informed, more precise treatment decisions that can improve patient outcomes.”

Hear more from Maetzold and patients whose lives have been impacted by the DecisionDx-Melanoma test in .

By harnessing the genetic information within a patient’s tumor biology and incorporating traditional clinicopathologic features, DecisionDx-Melanoma is designed to stratify patient risk and provide personalized results regarding a patient's individual predicted risk of recurrence and/or metastasis and likelihood of sentinel lymph node positivity. DecisionDx-Melanoma’s clinical value is supported by more than 50 peer-reviewed publications, has been shown to be associated with improved patient survival and has been studied in more than 10,000 patient samples.

For more information about DecisionDx-Melanoma, visit .

About DecisionDx-Melanoma

DecisionDx-Melanoma is a 31-gene expression profile risk stratification test. It is designed to inform two clinical questions in the management of cutaneous melanoma: a patient’s individual risk of sentinel lymph node (SLN) positivity and a patient's personal risk of melanoma recurrence and/or metastasis. By integrating tumor biology with clinical and pathologic factors using a validated proprietary algorithm, DecisionDx-Melanoma is designed to provide a comprehensive and clinically actionable result to guide risk-aligned patient care. DecisionDx-Melanoma has been shown to be associated with improved patient survival and has been studied in more than 10,000 patient samples. DecisionDx-Melanoma’s clinical value is supported by more than 50 peer-reviewed and published studies, providing confidence in disease management plans that incorporate the test’s results. Through March 31, 2025, DecisionDx-Melanoma has been ordered more than 200,000 times for patients diagnosed with cutaneous melanoma.

About Castle Biosciences

Castle Biosciences (Nasdaq: CSTL) is a leading diagnostics company improving health through innovative tests that guide patient care. The Company aims to transform disease management by keeping people first: patients, clinicians, employees and investors.

Castle’s current portfolio consists of tests for skin cancers, Barrett’s esophagus, mental health conditions and uveal melanoma. Additionally, the Company has active research and development programs for tests in these and other diseases with high clinical need, including its test in development to help guide systemic therapy selection for patients with moderate-to-severe atopic dermatitis seeking biologic treatment. To learn more, please visit  and connect with us on , ,  and .

DecisionDx-Melanoma, DecisionDx-CMSeq, i31-SLNB, i31-ROR, DecisionDx-SCC, MyPath Melanoma, DiffDx-Melanoma, TissueCypher, IDgenetix, DecisionDx-UM, DecisionDx-PRAME and DecisionDx-UMSeq are trademarks of Castle Biosciences, Inc.

Forward-Looking Statements

This press release contains forward-looking statements 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 the “safe harbor” created by those sections. These forward-looking statements include, but are not limited to, statements concerning: DecisionDx-Melanoma’s ability to (i) provide comprehensive, personalized results to guide risk-aligned management decisions for patients with stage I-III cutaneous melanoma and (ii) help clinicians make more informed, more precise treatment decisions; and Castle’s ability to improve the lives of melanoma patients. The words “believe,” “can,” “could,” “potential” and similar expressions are intended to identify forward-looking statements, although not all forward-looking statements contain these identifying words. 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. Actual results or events could differ materially from the plans, intentions and expectations disclosed in the forward-looking statements that we make. These forward-looking statements involve risks and uncertainties that could cause our actual results to differ materially from those in the forward-looking statements, including, without limitation: subsequent study or trial results and findings may contradict earlier study or trial results and findings or may not support the results obtained in these studies, including with respect to the discussion of our tests in this press release; actual application of our tests may not provide the aforementioned benefits to patients; and the risks set forth under the heading “Risk Factors” in our Annual Report on Form 10-K for the year ended December 31, 2024, and in our other filings with the SEC. The forward-looking statements are applicable only as of the date on which they are made, and we do not assume any obligation to update any forward-looking statements, except as may be required by law.

Investor Contact:

Camilla Zuckero

Media Contact:

Allison Marshall

Source: Castle Biosciences Inc.

A video accompanying this announcement is available at: