circRNA basic information
circBase ID: -
Name: hsa_circ_ATAD2
Synonym: cir-cATAD2
Host Gene: ATAD2
Genomic location(hg19): -
Genomic location(hg38): -
Subcellular localization: not tested
 
 
 
 
 
 
 
Disease basic information
MONDO ID:
0005494
MONDO name: triple-negative breast carcinoma
Disease details: triple-negative breast cancer
Disease DO ID:
0060081
Disease MeSH ID:
D064726
Disease NCIt ID:
C71732
Disease ICD11 ID:
-
Disease OMIM ID:
-
Species: Human
Species details: Homo sapiens
Tissue specimen:

-

Cell lines:

BT-20; MDA-MB-231; MDA-MB-468

In vivo animal model:

-

circRNA-disease information
Expression pattern:
DN
Associated gene: 2,003 unique downstream targets, ubiquitin-mediated proteolysis, MAPK signaling pathway, Hippo signaling pathway, Wnt signaling pathway, ErbB signaling pathway
Associated microRNA: miR-5683, miR-6504-3p, miR-10399-5p, miR-6839-5p, miR-449c-5p, miR-34b-5p, miR-4642, miR-378j, miR-2682-5p, miR-10395-3p
Biological function: May participate in TNBC radiation response through suppression of chromatin remodeling and protein degradation pathways during DNA repair.
Molecular mechanism: Predicted ceRNA mechanism and enrichment in ubiquitin-mediated proteolysis, MAPK, Hippo, Wnt and ErbB signaling pathways.
Biological pathway or process:

ubiquitination (inhibits); MAPK (other); Hippo/YAP (other); Wnt/beta-catenin (other); ceRNA regulation (other); other pathway/process (other)

Detected method:
Q
Validation methods:

Back-Splice Junction PCR / divergent primers PCR; RT-qPCR; Bioinformatics Analysis

Clinical significance:

Potential radiation sensitivity biomarker and therapeutic target to improve TNBC treatment efficacy.

Description:

circATAD2 is consistently suppressed after irradiation in TNBC cell lines. Its predicted miRNA targets and downstream pathway enrichment suggest involvement in ubiquitin-mediated proteolysis and multiple signaling pathways relevant to radiation response.

Confidence score:

0.329

Other information
Title:

Time- and dose-dependent regulation of circular RNAs in the response of triple-negative breast cancer cells to ionizing radiation.

Journal: Clinical & translational oncology : official publication of the Federation of Spanish Oncology Societies and of the National Cancer Institute of Mexico
Published: 2026
PubMed ID: 41746541
Study type:

biological research / bioinformatics study

Data availability: All data produced in the current study are available from the corresponding author upon reasonable request; supplementary material available at https://doi.org/10.1007/s12094-026-04280-1
Code availability: -