NCI Definition: The most frequently seen skin cancer. It arises from basal cells of the epidermis and pilosebaceous units. Clinically it is divided into the following types: nodular, ulcerative, superficial, multicentric, erythematous, and sclerosing or morphea-like. More than 95% of these carcinomas occur in patients over 40. They develop on hair-bearing skin, most commonly on sun-exposed areas. Approximately 85% are found on the head and neck and the remaining 15% on the trunk and extremities. Basal cell carcinoma usually grows in a slow and indolent fashion. However, if untreated, the tumor may invade the subcutaneous fat, skeletal muscle and bone. Distant metastases are rare. Excision, curettage and irradiation cure most basal cell carcinomas. [1]

Basal cell carcinomas most frequently harbor alterations in TP53, PTCH1, ROS1, KMT2D, and BCOR [2].

Most Commonly Altered Genes in Basal Cell Carcinoma

TP53 Mutation, PTCH1 Mutation, TP53 c.217-c.1178 Missense, TP53 Missense, and ROS1 Mutation are the most common alterations in basal cell carcinoma [2].

Top Alterations in Basal Cell Carcinoma

Biomarker-Directed Therapies

Significant Genes in Basal Cell Carcinoma


MLH1 +

MLH3 +

MSH2 +

MSH3 +

MSH6 +

PMS1 +

PMS2 +



Disease Details

Basal Cell Carcinoma of the Skin, Skin Basal Cell Carcinoma, Basal Cell Carcinoma of Skin, Basal Cell Skin Carcinoma, Basal Cell Cancer, BCC, Basal Cell Epithelioma
Skin Carcinoma
Anal Margin Basal Cell Carcinoma, Penile Basal Cell Carcinoma, Skin Morphea-Type (Sclerosing) Basal Cell Carcinoma, Skin Clear Cell Basal Cell Carcinoma, Skin Adamantinoid Basal Cell Carcinoma, Skin Signet Ring Cell Basal Cell Carcinoma, Skin Basosquamous Cell Carcinoma, External Ear Basal Cell Carcinoma, Scrotal Basal Cell Carcinoma, Skin Sarcomatoid Basal Cell Carcinoma, Superficial Basal Cell Carcinoma, Skin Nodular Basal Cell Carcinoma, Skin Fibroepithelial Basal Cell Carcinoma, Vulvar Basal Cell Carcinoma, Superficial Multifocal Basal Cell Carcinoma, and Salivary Gland Basal Cell Adenocarcinoma
OncoTree Name
Basal Cell Carcinoma
OncoTree Code


1. National Cancer Institute. NCI Thesaurus Version 18.11d. https://ncit.nci.nih.gov/ncitbrowser/ [2018-08-28]. [2018-09-21].

2. The AACR Project GENIE Consortium. AACR Project GENIE: powering precision medicine through an international consortium. Cancer Discovery. 2017;7(8):818-831. Dataset Version 6. This dataset does not represent the totality of the genetic landscape; see paper for more information.

3. All assertions and clinical trial landscape data are curated from primary sources. You can read more about the curation process here.