Newly Published Systematic Review Confirms Strength of Evidence and Outlines Appropriate Use Criteria for Integration of DecisionDx-Melanoma in Management of Patients with Cutaneous Melanoma

FRIENDSWOOD, Texas--(BUSINESS WIRE)-- Castle Biosciences, Inc. (Nasdaq: CSTL), a skin cancer diagnostics company providing personalized genomic information to improve cancer treatment decisions, today announced the publication of an expert panel consensus statement that includes appropriate use criteria for DecisionDx^®-Melanoma in patients with cutaneous melanoma. The study was published in the peer-reviewed journal SKIN: The Journal of Cutaneous Medicine.

A panel of nine expert dermatologists, dermatologic surgeons, and dermatopathologists performed a systematic review of published evidence and developed appropriate use criteria supporting the integration of DecisionDx-Melanoma and two other validated, widely used molecular tests in melanoma patient care. The systematic review of peer-reviewed medical literature identified studies relating to clinical validity, outcomes or utility of DecisionDx-Melanoma. Employing a modified Delphi consensus technique, the panel determined the level of evidence for publications as well as an overall strength of recommendation for selected indications using standard Strength of Recommendation Taxonomy (SORT) methodology.

Key Findings

• Eleven publications were identified as achieving quality levels 1 or 2, with two publications achieving the highest level of evidence (Level 1).

• Eight consensus-based appropriate use criteria recommendations achieved a rating of “A” or “B”, with “A” rating indicating the highest strength of recommendation.

• The expert consensus-based appropriate use criteria provide an evidence-based framework to integrate the DecisionDx-Melanoma test into the management of patients with cutaneous melanoma.

“This important publication is the first to provide expert consensus-based appropriate use criteria to help clinicians integrate technologies like the DecisionDx-Melanoma test into their melanoma practice,” said study co-author Darrell S. Rigel, M.D., M.S., Clinical Professor at New York University (NYU) School of Medicine. “The DecisionDx-Melanoma test has been well validated as a predictor of risk of metastasis or recurrence. The appropriate use criteria recommendations align with the current clinical use of DecisionDx-Melanoma to guide the post-diagnostic decisions to perform a sentinel lymph node biopsy surgical procedure in certain patients, and determine appropriate management plans regarding follow-up regimens, inclusion of imaging and referral to oncology.”

The full published study can be accessed at the journal’s website.

About Castle Biosciences

Castle Biosciences (Nasdaq: CSTL) is a commercial-stage dermatologic cancer company focused on providing physicians and their patients with personalized, clinically actionable genomic information to make more accurate treatment decisions. The Company currently offers tests for patients with cutaneous melanoma (DecisionDx^®-Melanoma, DecisionDx^®-CMSeq; www.SkinMelanoma.com) and uveal melanoma (DecisionDx^®-UM, DecisionDx^®-PRAME and DecisionDx^®-UMSeq; www.MyUvealMelanoma.com), with products in development for other underserved cancers, the two most advanced of which are focused on patients with cutaneous squamous cell carcinoma, and patients who have a difficult-to-diagnose pigmented lesion. Castle Biosciences is based in Friendswood, Texas (Houston), and has laboratory operations in Phoenix, Arizona. For more information, visit www.CastleBiosciences.com.

DecisionDx-Melanoma, DecisionDx-CMSeq, DecisionDx-UM, DecisionDx-PRAME and DecisionDx-UMSeq are trademarks of Castle Biosciences, Inc.

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