Animal studyReported positivePreclinical onlyTier 2 · animal
Nature communications · Aug 2025 · xenograft antitumor assays
neuroblastomarhabdomyosarcomacolorectal carcinomamelanomaovarian carcinomabreast carcinoma
This study tested a humanized antibody-drug conjugate called CDX0239-PBD in ALK-expressing cancer models. In cell lines, it was taken up by ALK-positive neuroblastoma cells and killed them in a way that depended on surface ALK expression. In mouse xenograft models, it produced strong antitumor activity and complete responses were maintained in several ALK-expressing cancers.
Key findings
- ALK RNA, protein, and tumor cell surface expression was elevated in multiple pediatric and adult malignancies with minimal expression in childhood normal tissues.
- CDX0239-PBD was internalized in ALK-expressing neuroblastoma cell lines with cell surface expression-dependent cytotoxicity.
- CDX0239-PBD exhibited potent antitumor efficacy including maintained complete responses in ALK-expressing patient and cell line-derived neuroblastoma, fusion-positive rhabdomyosarcoma, and colorectal carcinoma xenograft models.
Limitations: Preclinical study only; no human treatment data are reported in the abstract.; Efficacy was shown in cell lines and xenograft mouse models, which may not predict clinical benefit.; No quantitative effect sizes, dosing details, or toxicity results are provided in the abstract..
The abstract describes a preclinical anticancer antibody-drug conjugate targeting ALK-expressing tumors.
AI summary of the abstract, human-reviewed · Jun 2026. Describes what this study reported, not medical advice. View on PubMed · Full text
ReviewMechanismReported positiveLimited evidenceTier 4 · clinical
Future oncology (London, England) · Dec 2014 · Review
gastric cancerglioblastoma multiformehepatocellular carcinomabladder cancerlung cancercolon cancerovarian cancerleukemiabreast cancerhead and neck cancerrhabdomyosarcomaneuroblastoma
This is a narrative review summarizing published reports about the adaptor protein CRKL in cancer. The authors report that CRKL is overexpressed in many tumor types and appears to promote aggressive or malignant behaviors, and they suggest CRKL has potential as a diagnostic/prognostic biomarker.
Key findings
- CRKL is a member of the CRK family and functions as an adaptor protein in intracellular signal transduction.
- CRKL has been reported overexpressed in a variety of cancers.
- CRKL appears to play a tumor-promotion role in multiple cancers, including those listed in the abstract.
- The review summarizes associations between CRKL and malignant tumor behaviors and potential mechanisms of action.
- The authors state CRKL has potential to be used as a biomarker for diagnosis, treatment and prognosis of certain tumors.
Limitations: This is a review article and does not present new primary experimental data.; Abstract provides no information on search strategy, inclusion criteria, or quality assessment of included studies.; Heterogeneity across many cancer types and study designs likely limits generalizability of conclusions.; The abstract does not report quantitative synthesis or effect sizes..
AI summary of the abstract, human-reviewed · Jun 2026. Describes what this study reported, not medical advice. View on PubMed