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CircRNAs act as signaling hubs for immune checkpoints and indicators of ICI response in lymphomaCircRNAs May Help Predict Response to Lymphoma Immunotherapy

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Key Takeaway
Note that circRNAs may act as signaling hubs for immune checkpoints and potential predictors of ICI response in lymphoma.

This systematic review explores the functional role of circular RNAs (circRNAs) in lymphoma, specifically focusing on their involvement in immune evasion and potential synergy with immune checkpoint inhibitors (ICIs). The authors synthesize evidence regarding how circRNAs act as signaling hubs to fine-tune checkpoints such as PD-L1 and CD47. Additionally, EBV-encoded circRNAs are identified as significant contributors to immune evasion.

The review highlights specific interactions in classical Hodgkin lymphoma, noting synergistic effects between 9p24.1 amplification and circRNAs. Furthermore, the authors suggest that circulating circRNAs may serve as dynamic indicators for predicting patient responses to ICIs. These findings point toward potential circRNA-based immunotherapies to overcome existing resistance mechanisms.

Several limitations are noted, including flaws in current model systems, technological constraints of current validation techniques, and questions regarding the physiological significance of the ceRNA hypothesis. While these findings suggest a role for circRNAs in lymphoma management, clinical application is currently limited by these technical and biological uncertainties.

How this fits prior evidence

This finding addresses a gap in understanding mechanisms of immunotherapy resistance in lymphoma. While previous evidence identified the CD73-adenosine axis as a potential target to overcome immune checkpoint inhibitor resistance in melanoma, this review explores circRNAs as signaling hubs for PD-L1 and CD47 in lymphoma. It also suggests circRNAs may serve as dynamic indicators for predicting ICI responses.

Researchers reviewed how certain molecules, known as circular RNAs or circRNAs, affect the way the body fights cancer. Specifically, they looked at how these molecules interact with immune checkpoints in cases of Hodgkin Lymphoma. The study found that circRNAs can act as hubs to regulate proteins like PD-L1 and CD47, which are often involved in helping cancer cells hide from the immune system.

The research also highlighted the role of EBV-encoded circRNAs in helping cancer evade detection. Additionally, they found a link between certain genetic amplifications and these circRNAs in patients with classical Hodgkin Lymphoma. Because these molecules change over time, they may serve as useful indicators to predict how well a patient might respond to immune checkpoint inhibitors.

It is important to note that this research is based on systematic reviews of existing data rather than new clinical trials. There are still limitations regarding current technology and the exact physiological impact of these findings. While circRNAs show promise for developing new therapies, they are not yet a standard tool in clinical practice.

What this means for you:
CircRNAs may help predict how lymphoma patients respond to immunotherapy, but more research is needed.

Common questions

What are circRNAs and how do they relate to lymphoma?

CircRNAs, or circular RNAs, act as signaling hubs in the body. In cases of lymphoma, they can regulate immune checkpoints like PD-L1 and CD47. These checkpoints often help cancer cells avoid being attacked by the immune system. Understanding these molecules helps researchers find ways to improve how the body fights the cancer.

Can circRNAs help predict if a treatment will work?

Yes, the research suggests that circulating circRNAs could serve as dynamic indicators. Because they can change over time, they may help doctors predict how well a patient with Hodgkin Lymphoma will respond to immune checkpoint inhibitors. This could eventually help tailor treatments more specifically to each patient.

Are these findings ready to be used in clinics today?

Not yet. While the research shows that circRNAs have potential as indicators and for new therapies, there are still technological constraints and limitations in current models. These findings are currently part of scientific research and are not yet a standard part of clinical practice. You should talk to your doctor about current treatment options.

Study Details

Study typeSystematic review
EvidenceLevel 1
PublishedJul 2026
View Original Abstract ↓
Immune checkpoint inhibitors (ICIs) have revolutionized lymphoma treatment, yet resistance driven by complex regulatory networks remains a major hurdle. Circular RNAs (circRNAs) have emerged as central signaling hubs that integrate metabolic, inflammatory, and oncogenic cues to fine-tune immune checkpoints such as PD-L1 and CD47 in lymphoma. Here, we systematically dissect the molecular mechanisms by which circRNAs govern immune checkpoints in lymphoma, including nuclear transcriptional control, interactions with RNA-binding proteins (RBPs), competitive endogenous RNA (ceRNA) networks, and micropeptide translation. We differentiate between cell-extrinsic, exosome-mediated reprogramming of the tumor microenvironment and cell-intrinsic circRNA circuits within lymphoma cells spatially. Subtype-specific investigations demonstrate the importance of Epstein-Barr virus (EBV)-encoded circRNAs in immune evasion and the synergistic interactions between 9p24.1 amplification and circRNAs in classical Hodgkin lymphoma (cHL). While therapeutic approaches including antisense oligonucleotides, CRISPR-Cas13, and nanodelivery technologies demonstrate preclinical synergy with ICIs, circulating circRNAs show potential as dynamic indicators for predicting ICI responses. We also critically examine ongoing discussions about the flaws of current model systems, the technological constraints of current validation techniques, and the physiological significance of the ceRNA hypothesis. Positioning circRNAs as multimodal regulatory hubs, this review provides a theoretical framework for developing circRNA-based immunotherapies to overcome resistance in lymphoma.
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