Single Dose of pGM169/GL67A in CF Patients

Cystic Fibrosis Clinical Trial

Official title:

Evaluation of Safety and Gene Expression With a Single Dose of pGM169/GL67A Administered to the Nose and Lung of Individuals With Cystic Fibrosis

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT00789867
• Other study ID #: cro851
• Status: Completed
• Phase: Phase 1/Phase 2
• Start date: November 2008
• Est. completion date: December 2010

Study information

• Verified date: January 2020
• Source: Imperial College London
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

The study objectives are to assess safety, tolerability and gene expression after a single dose of non-viral CFTR gene therapy (pGM169/GL67A) administered to the nose and lungs of patients with cystic fibrosis.

Description:

The trial is designed as single administration to nose and lung. Initially, in Part A, 3 patients will be dosed individually one week apart with 10 ml (26.5mg pDNA) via nebuliser and a nasal dose equivalent to 10% of this (based on relative surface area calculations: conducting airways approximate 540 cm2; nasal epithelium from both nostrils approximately 40 cm2). Based on our previous study, we do not expect any side effects of the nasal dose, but we are taking this opportunity, as this group will not be undergoing bronchoscopic efficacy measures, to assess gene transfer to the nasal epithelium. A further group of 3 patients will then be treated in exactly the same way with 20 ml nebulised and a 2 ml nasal dose.

Subsequently, patients will receive doses of 2 ml (nasal) and 20 ml (nebulised). These patients will undergo more intensive monitoring for gene expression both before and after administration.

In Part B of the protocol, we will test combinations of delivery conditions and dose in an attempt to identify the maximal tolerated dose. We may also use Ibuprofen or Prednisolone in standard clinical doses around the dosing period to reduce the inflammatory response. Delivery conditions include: standard nebulisation (each 5 ml over 25 minutes as in Part A), slow (each 5 ml over 75-150 minutes) and divided (standard rate delivery with a period of up to 6 hours between aliquots). With these conditions we will test the following doses until a tolerable dose is reached: 20 ml (no standard delivery as sufficient data already available from Part A); 10 ml; 5 ml; 2.5 ml. Each dosing strategy will initially be performed in a cohort of 3 patients although numbers may need to be increased to 6 if data are inconclusive. Once a satisfactory Single dose of pGM169/GL67A in CF patients; cro851 Version 10; 16.08.2010 10 dose and nebulisation strategy has been identified, the numbers receiving this will be increased to 6. The maximum number of patients recruited to this arm of the study will be 30. Part B will also allow either these subjects or others to receive a 2 ml nasal dose with both pre and post-measurements of nasal PD.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 35
• Est. completion date: December 2010
• Est. primary completion date: August 2009
• Accepts healthy volunteers: No
• Gender: All
• Age group: 16 Years to 70 Years

Eligibility

Inclusion Criteria:

• Cystic fibrosis confirmed by sweat testing or genetic analysis

• Males and females aged 16 years and above

• Forced expiratory volume in the 1st second (FEV1) > 60% predicted values

• Clinical stability at entry

• Prepared to take effective contraceptive precautions for the duration of their participation in the study and for 3 months thereafter

• If taking regular rhDNase (pulmozyme) is willing, and considered able by independent medical carers, to withhold treatment for 24 hours before and 24 hours after the gene therapy dose

• Written informed consent obtained

• Permission to inform GP of participation in study

Exclusion Criteria:

• Infection with Burkholderia cepacia complex organisms or MRSA

• Significant nasal pathology including polyps, clinically-significant rhinosinusitis, or recurrent severe epistaxis (nose bleeds)

• Acute upper respiratory tract infection within the last 2 weeks

• Previous spontaneous pneumothorax without pleurodesis

• Recurrent severe haemoptysis

• Current smoker

• Significant comorbidity including:

1. Moderate/severe CF liver disease

2. Significant renal impairment

3. Significant coagulopathy

• Receiving 2nd line immunosuppressant drugs such as methotrexate, cyclosporine, intravenous immunoglobulin preparations

• Pregnant or breastfeeding

Related Conditions & MeSH terms

• Cystic Fibrosis
• Fibrosis

Intervention

Drug:
• pGM169/GL67A
Received a nebulized dose via an breath-actuated nebulizer

Locations

Country	Name	City	State
United Kingdom	Royal Brompton Hospital	London

Sponsors (6)

Lead Sponsor	Collaborator
Imperial College London	Cystic Fibrosis Trust, Royal Brompton & Harefield NHS Foundation Trust, University of Edinburgh, University of Oxford, University of Pennsylvania

Country where clinical trial is conducted

United Kingdom, 

References & Publications (2)

Alton EW, Boyd AC, Porteous DJ, Davies G, Davies JC, Griesenbach U, Higgins TE, Gill DR, Hyde SC, Innes JA; UK Cystic Fibrosis Gene Therapy Consortium *. A Phase I/IIa Safety and Efficacy Study of Nebulized Liposome-mediated Gene Therapy for Cystic Fibros — View Citation

Alton EW, Stern M, Farley R, Jaffe A, Chadwick SL, Phillips J, Davies J, Smith SN, Browning J, Davies MG, Hodson ME, Durham SR, Li D, Jeffery PK, Scallan M, Balfour R, Eastman SJ, Cheng SH, Smith AE, Meeker D, Geddes DM. Cationic lipid-mediated CFTR gene transfer to the lungs and nose of patients with cystic fibrosis: a double-blind placebo-controlled trial. Lancet. 1999 Mar 20;353(9157):947-54. — View Citation

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Body Maximum Temperature		6-8h
Primary	Blood Leukocytes	Blood leukocytes measure	8h
Primary	Blood Neutrophils	Blood neutrophils measures	8h
Primary	FEV1 Relative % Drop	FEV1 relative % drop measure	8h
Primary	FVC Relative % Drop	FVC relative % drop measure	6h
Primary	Lung Clearance Index - LCI	Lung clearance index measure is a measure of abnormal ventilation distribution derived from the multiple breath inert gas washout technique.	8h

External Links

•   UK CF Gene Therapy Consortium website