Author: Claire Hornung

Single joint tissue destruction biomarkers: association between type III collagen degradation and local tissue damage of a single joint

Introduction

The landscape of osteoarthritis (OA) research and therapeutic development has undergone significant transformation, shifting from a primarily structural focus to an emphasis on patient-reported outcomes (PROs). Pain, which primarily originates from the soft tissue of the joint, is intricately linked with the structural integrity of joint tissues. Serological biomarkers are considered potential surrogate endpoints, but their contribution from single joints to systemic levels in OA patients is unclear.

This study explored systemic biomarker levels’ response to tissue damage and healing in patients undergoing knee or hip joint replacement revision for aseptic failure, compared to patients with chronic pain from a joint replacement, but not receiving surgery.

Poster

Conclusion

C3M degradation was found to increase in response to tissue insult to the joint from revision surgery, while no change was observed in a non-surgical group with chronic pain of the joint over 6 months. The increase and gradual decrease throughout the study period indicate a relationship between systemic levels of type III collagen degradation fragments and soft-tissue destruction and inflammation of the joint.

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Introduction

Drug development in the osteoarthritis (OA) field has proven extremely difficult, with a discordance between joint structure and pain. Weight loss has been associated with an effect on pain and function. Several molecular endotypes have been suggested for OA, which could be treatable, such as bone, inflammation, and lately, an overweight endotype.

The aim was to investigate the relationship between obesity, weight loss and patient-reported outcomes (PROs) in patients with persistent pain, and the effect on joint and bone tissue related soluble biomarkers.

Poster

Conclusion

Changes in PROs were significantly associated with obesity. Weight loss was associated with an increase in bone and cartilage degradation, as well as lowering in the interstitial matrix degradation. These data indicate that weight loss comes with a risk of increased joint tissue loss, but improvement in tissue inflammation.

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Regulatory enablement of molecular endotypes for drug development. Definition of the context of use (COU) and molecular endotype which most urgently will assist in drug development: Stakeholder alignment under the Clinical Trial Symposium (CTS) & OARSI umbrella

Introduction

For a biomarker to be considered in therapeutic development, it must navigate various approval pathways. In the US, acceptance for single therapeutic trials is via IND, NDA, and BLA submissions, while for multiple drug development programs, it’s through the Biomarker Qualification Program. This program specifically evaluates the biomarker itself, not the measurement method.

Alternatively, in the US, a biomarker test can be approved by CDRH, leading to a legally marketable In-Vitro Diagnostic (IVD). The De Novo classification offers a pathway for novel medical devices, based on risk classification. Additionally, the 510(k) submission demonstrates equivalence to predicate devices, while PMA evaluates Class III device safety and efficacy. In the EU, approval is through CE marking, aligning with US FDA pathways.

A biomarker for general drug development can be qualified by CDER through the Biomarker Qualification Program, resulting in a tool usable under specific COUs. This process involves collaborative efforts with regulatory agencies and stakeholders, often in consortia, to streamline qualification. Monitoring biomarkers play a pivotal role in medical product development, furnishing tangible evidence of treatment impact, while predictive biomarkers serve to mitigate trial risks and minimize failures by pinpointing responsive patient subgroups.

Poster

Conclusion

Defining the Context of Use (COU) within real-world or clinical study populations is essential for biomarker development. Following CLSI guidelines ensures technical robustness, while careful risk-benefit evaluation supports clinical relevance. The regulatory enablement of molecular endotypes is essential for drug development.

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Evaluation of biomarkers in patients with potential periprosthetic joint infections after hip and knee arthroplasty

Introduction

The number of total joint replacements performed each year to treat pain related to end stage knee osteoarthritis (OA) has steadily increased in the last decade. Despite overall efficacy in the majority of patients, a subset of about 20% experience prosthetic complications in the short or in the long run, most often due to aseptic failure or prosthetic joint infection. Accurate diagnosis is therefore crucial. Biomarkers of tissue remodeling are promising diagnostic tools to characterize joint pathological mechanisms, provide a better understanding of how prosthetic complications affect the tissue remodeling to improve diagnosis and intervention

Poster

Conclusion

This study aimed to investigate the relationship between joint tissue remodeling and inflammation biomarkers with diagnosis in patients with hip or knee prosthetic joint complications, as well as to assess the effect of joint corrective surgery on acute and long-term biomarker levels.

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Introduction

Cartilage oligomeric matrix protein (COMP) is an extracellular matrix (ECM) glycoprotein, consisting of five identical chains. It plays a crucial role in maintaining ECM integrity, facilitating collagen fibrils formation, and regulating cell phenotypes and functions. It is primarily found in human skeleton system, also present in adipose tissue, heart etc. Osteoarthritis (OA) involves increased activity of matrix-degrading enzymes, leading to the fragmentation of ECM.

In this study, we developed a high-sensitive chemiluminescence immunoassay for quantifying a neoepitope of COMP (DACGMQQS⁷⁷↓) and explored its application as a biomarker of OA.

Poster

Conclusion

The data generated interest in the use of COMP-M as a tissue degradation biomarker of osteoarthritis.

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Proteolytic degradation of BigH3 can be quantified non-invasively in serum with biomarker potential for patients with non-small cell lung cancer

Introduction

Transforming growth factor beta induced protein ig-h3 (BigH3/TGFBI) is widely expressed and is participating in various biological processes including adhesion, migration, and angiogenesis. BigH3 is known to bind multiple collagens and are often embedded in the matrix where it seems
to function as a linker between ECM and cell surfaces. In non-small cell lung cancer (NSCLC), the increased proteolytic activity found may degrade BigH3, disrupting its ECM interactions and generating peptide fragments that could potentially serve as novel non-invasive biomarkers if released into circulation.

Our aim is to develop a tool to quantify degraded BigH3 non-invasively and explore its potential as a biomarker in NSCLC.

Poster

Conclusion

Degradation of BIGH3 can be reflected by non-invasive quantification of the cleaved fragment of BigH3,
BigH3M-N, in serum. This suggests BigH3M-N as a promising biomarker in NSCLC with potential for discriminating between subtypes. However, as BigH3M-N is connected to fibroblast matrix biology, the optimal use for this biomarker might be in combination with other ECM biomarkers.

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Tissue-derived peripheral biomarkers that reflect activity of T-cells, macrophages, and neutrophils in patients with solid tumors

Introduction

By identifying and quantifying specific extracellular protein fragments with neo-epitopes that are generated by proteolytic cleavage and post-translational modifications specific for T-cells, neutrophils and macrophages, respectively, it is possible to develop peripheral biomarkers that reflect the activity of these immune cells.

Poster

Conclusion

Tissue-derived peripheral biomarkers that reflect the activity of T-cells (C4G), macrophages (VICM) and neutrophils (nordicCPa9-HNE™) has biomarker potential in solid tumors and may serve as prognostic, predictive and pharmacodynamic biomarkers in clinical trials investigating cancer immunotherapy.

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Serological assessment of cancer associated myo-fibroblast (myCAF) activity by collagen pro-peptide biomarkers provides high prognostic power

Introduction

Myofibroblast Cancer Associated Fibroblasts (myCAFs) are the main tumor fibrosis drivers and hence different from inflammatory CAFs (iCAFs). CAFs produce type III, V, VI and XI collagen that are the essential components of tumor fibrosis. Pro-peptides of these collagens can be quantified both in serum with the nordicPRO-C3™, PRO-C5, nordicPRO-C6™ and PRO-C11 biomarkers where they are prognostic for poor overall survival in patients with various solid tumor types and may be applied in vitro.

In this study we investigated the association and difference between myCAFs and iCAFs and their collagen expression profile and related that to data available data on serological assessments of nordicPRO-C3™, PRO-C5, nordicPRO-C6™ and PRO-C11, and cultured CAFs.

Poster

Conclusion

Profiling collagen expression in fibroblast from PDAC and NSCLC reveals that type V collagen and type XI collagen are found in myCAF. Biomarkers of these collagens can be measured in serum from cancer patients and are prognostic for poor overall survival. Thus, these data suggest that cancer associated myo-fibroblast (myCAF) activity can be assessed non-invasively by specific collagen pro-peptide biomarkers.

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Introduction

Pancreatic ductal adenocarcinoma (PDAC) patients have poor prognosis partly due to excessive activity of cancer-associated fibroblasts (CAFs). CAFs drive the fibrosis that causes excessive type III collagen and extracellular matrix deposition that in turn reduces drug response resulting in poor survival. High levels of the type III collagen serum biomarker nordicPRO-C3™ correlates with poor survival in PDAC. While TGF-β is thought to be one of the main drivers of nordicPRO-C3™ and tumor fibrosis, cytokines such as Interleukin 1 (IL-1) play a key role in the pancreatic tumor microenvironment and may play a significant role in also tumor fibrosis.
In this study, we first investigated the potential of IL-1 in activating fibroblasts to drive fibrosis and produce nordicPRO-C3™. Subsequently, we established a co-culture of pancreatic cancer cells and pancreatic CAFs to investigate the anti-fibrotic properties of nadunolimab, a fully humanized ADCC-enhanced monoclonal IgG1 antibody that targets IL1RAP and disrupts both IL-1α and IL-1β signaling.

Poster

Conclusion

Co-cultures of pancreatic tumor cells and CAFs induced formation, including collagen type III formation, and nadunolimab inhibited the collagen type III formation, suggesting anti-fibrotic properties. Activated fibroblasts had induced type III collagen formation (nordicPRO-C3™) suggesting that IL-1 is a driver of tumor fibrosis in PDAC. Nadunolimab, which is currently in clinical development for treatment of pancreatic cancer, has the potential to counteract the detrimental, fibrotic progression in tumors by targeting IL1RAP and blocking both IL-1α and IL-1β signaling. These findings suggest that nordicPRO-C3™ could potentially be used for prognostic/predictive enrichment and as a pharmacodynamic marker in future studies evaluating anti-IL-1 modalities in PDAC.

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Non-invasive biomarkers of ECM turnover are prognostic for combinations of checkpoint inhibition immunotherapy in solid tumors

Introduction

Immune checkpoint inhibitors (ICIs) are being investigated in many different combinations (Table 1) but only a fraction of patients respond. This highlights the need for prognostic biomarkers that can help identify patients most likely to respond. Tumor fibrosis and the high collagen/ECM turnover in the tumor microenvironment – processes are closely related to response to ICIs and survival outcomes.

In this study we investigated the clinical utility of non-invasive biomarkers of collagen-1 (reC1M), collagen-III (nordicPRO-C3™), collagen-4 (C4M), collagen-19 (PRO-C19), collagen-20 (PRO-C20) and TGF-β activity in metastatic cancer patients treated with ICIs.

Poster

Conclusion

Across a diverse cohort of patients with metastatic cancer treated with different checkpoint inhibition regimens, non-invasive biomarkers associated with tumor fibrosis and collagen/ECM turnover (nordicPRO-C3™, PRO-C19, PRO-C20, TGF-β, reC1M and C4M) could identify cancer patients with poor prognosis.

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