Ignite Creation Date:
2024-10-26 @ 3:38 PM
Last Modification Date:
2024-10-26 @ 3:38 PM
Study NCT ID:
NCT06557343
Status:
NOT_YET_RECRUITING
Last Update Posted:
None
First Post:
2024-06-03
Brief Title:
Single-Cell Sequencing Analysis of Radiation Pneumonitis Signals In Patients Treated For Cancer With Radiotherapy
Sponsor:
None
Organization:
None
Study Overview
Official Title:
Single-Cell Sequencing Analysis of Radiation Pneumonitis Signals In Patients Treated For Cancer With Radiotherapy
Status:
NOT_YET_RECRUITING
Status Verified Date:
2024-06
Last Known Status:
None
Delayed Posting:
No
If Stopped, Why?:
Not Stopped
Has Expanded Access:
No
If Expanded Access, NCT#:
N/A
Has Expanded Access, NCT# Status:
N/A
Acronym:
SPITFIRE
Brief Summary:
Patients with signs of radiation induced lung inflammation who are referred for a clinical bronchoscopy for investigation will have a sample sent for single cell sequencing This is a novel technique which allows for identification of which cells are present and what they are doing This hopes to better understand radiation pneumonitis a dose-limiting toxicity in cancer treatment which can be highly morbid and even fatal
Detailed Description:
Lung cancer is the third most common cancer in the UK with around 48500 people diagnosed with the condition each year Unfortunately despite significant progress in treatment options and their delivery improvements in survival remain elusive Radiotherapy RT is a cornerstone of both radical and palliative treatment in non-small cell lung cancer NSCLC Radiation pneumonitis RP is the key dose-limiting constraint and a morbid potentially even life-threatening toxicity associated with RT to the thorax Newer combinations of chemo-radiotherapy and adjuvant immunotherapy demonstrate improved survival but are associated with higher risk of RP
Current management of RP is very limited consisting of supportive measures and steroids the latter of which are often ineffective and come with their own risks The typical triad of symptoms exertional dyspnoea a non-productive cough and hypoxia can be directly fatal for some whilst for others represent a devastating and permanent decline in their lung function and quality of life Although modest understanding of the patient and treatment related risk factors for RP development have been identified the underlying mechanisms remain poorly understood and has been challenging to investigate A cascade of inflammatory changes with hypoxia lead to endovascular damage cytokine release and ultimately endothelial cell death and irreversible fibrosis Single-cell RNA sequencing scRNA-seq is a relatively novel technique that allows access to an understanding of this process It can allow the identification of what genetics cell types and functional heterogeneity are updown-regulated in association with irradiated lung tissue in humans
It is known that Stereotactic-Ablative Radiotherapy SABR is a well-tolerated highly conformal form of RT It has been safely delivered to patients before radical surgery without significant toxicity or increase in complication rate If a targetable mechanism behind this condition could be identified it has the potential to change the landscape of lung cancer RT management and in doing so save lives
A literature search revealed no investigation like this has been conducted in humans A Chinese study has been done in murine models and demonstrated several signals which if demonstrated in humans could be of interest SPITFIRE proposes to obtain inflamed lung tissue from patients who have developed pneumonitis following radiation for their lung cancer to find these answers
12 RATIONALE FOR STUDY Both patients who have potentially been cured of their lung cancer and those being treated to alleviate symptoms in their last months-to-years of life are diagnosed with RP Potentially treatable disease can be refused due to an unacceptable combination of risk factors for developing RP Hospitalisation for RP is common and yet often frustratingly unhelpful RP is a major contributor to patient morbidity mortality and healthcare cost Although clearly a constant concern in lung cancer any radiation delivered through the chest including oesophageal breast and pulmonary metastatic RT carries a risk of RP
Pulmonary fibrosis treatment is starting to improve with novel agents such as Nintedanib and Pirfenidone demonstrating some promise There is likely though yet unproven crossover between the molecular and genetic processes involved in these conditions Should a better understanding of the mechanisms behind RP reveal a targetable signal and subsequent treatment it has the potential to completely change not only the management of this toxicity but that of thoracic malignancies
Obtaining tissue from human lung affected by RP is a challenge These patients are often too unstable to safely proceed with such intervention There is however a population of patients who have clinical and radiological features diagnostic of the condition but maintain oxygen saturations SpO2 adequate to proceed to bronchoscopy Some of these patients will be referred for a bronchoscopy to exclude super-added infection As part of this process they may be enrolled in the ELFMAN Edinburgh Lung Fibrosis Molecular Endotyping Study - to better characterise suspected inflammatory and fibrotic interstitial lung disease as it may have shared molecular pathways to interstitial pneumonias including idiopathic pulmonary fibrosis IPF Standard bronchoscopy may not reach the effect area of lung but deep bronchial brushings obtains a good cellular yield which should be adequate for scRNA-seq whilst minimising risk to the patient This study proposes to utilise a brushing from these patients to process using a novel laboratory technique to help identify the cellular processes that may be involved in radiation pneumonitis
Current management of RP is very limited consisting of supportive measures and steroids the latter of which are often ineffective and come with their own risks The typical triad of symptoms exertional dyspnoea a non-productive cough and hypoxia can be directly fatal for some whilst for others represent a devastating and permanent decline in their lung function and quality of life Although modest understanding of the patient and treatment related risk factors for RP development have been identified the underlying mechanisms remain poorly understood and has been challenging to investigate A cascade of inflammatory changes with hypoxia lead to endovascular damage cytokine release and ultimately endothelial cell death and irreversible fibrosis Single-cell RNA sequencing scRNA-seq is a relatively novel technique that allows access to an understanding of this process It can allow the identification of what genetics cell types and functional heterogeneity are updown-regulated in association with irradiated lung tissue in humans
It is known that Stereotactic-Ablative Radiotherapy SABR is a well-tolerated highly conformal form of RT It has been safely delivered to patients before radical surgery without significant toxicity or increase in complication rate If a targetable mechanism behind this condition could be identified it has the potential to change the landscape of lung cancer RT management and in doing so save lives
A literature search revealed no investigation like this has been conducted in humans A Chinese study has been done in murine models and demonstrated several signals which if demonstrated in humans could be of interest SPITFIRE proposes to obtain inflamed lung tissue from patients who have developed pneumonitis following radiation for their lung cancer to find these answers
12 RATIONALE FOR STUDY Both patients who have potentially been cured of their lung cancer and those being treated to alleviate symptoms in their last months-to-years of life are diagnosed with RP Potentially treatable disease can be refused due to an unacceptable combination of risk factors for developing RP Hospitalisation for RP is common and yet often frustratingly unhelpful RP is a major contributor to patient morbidity mortality and healthcare cost Although clearly a constant concern in lung cancer any radiation delivered through the chest including oesophageal breast and pulmonary metastatic RT carries a risk of RP
Pulmonary fibrosis treatment is starting to improve with novel agents such as Nintedanib and Pirfenidone demonstrating some promise There is likely though yet unproven crossover between the molecular and genetic processes involved in these conditions Should a better understanding of the mechanisms behind RP reveal a targetable signal and subsequent treatment it has the potential to completely change not only the management of this toxicity but that of thoracic malignancies
Obtaining tissue from human lung affected by RP is a challenge These patients are often too unstable to safely proceed with such intervention There is however a population of patients who have clinical and radiological features diagnostic of the condition but maintain oxygen saturations SpO2 adequate to proceed to bronchoscopy Some of these patients will be referred for a bronchoscopy to exclude super-added infection As part of this process they may be enrolled in the ELFMAN Edinburgh Lung Fibrosis Molecular Endotyping Study - to better characterise suspected inflammatory and fibrotic interstitial lung disease as it may have shared molecular pathways to interstitial pneumonias including idiopathic pulmonary fibrosis IPF Standard bronchoscopy may not reach the effect area of lung but deep bronchial brushings obtains a good cellular yield which should be adequate for scRNA-seq whilst minimising risk to the patient This study proposes to utilise a brushing from these patients to process using a novel laboratory technique to help identify the cellular processes that may be involved in radiation pneumonitis
Study Oversight
Has Oversight DMC:
None
Is a FDA Regulated Drug?:
None
Is a FDA Regulated Device?:
None
Is an Unapproved Device?:
None
Is a PPSD?:
None
Is a US Export?:
None
Is an FDA AA801 Violation?:
None