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Retroviral insertion site methodology study

Methodology study to investigate the utility of retroviral insertion site analysis in samples from subjects treated with Strimvelis™ gene therapy - Retroviral insertion site methodology study

Status
Active, not recruiting
Phases
Phase 4
Study type
Interventional
Source
EU CTR
Registry ID
EUCTR2017-001731-39-IT
Enrollment
15
Registered
2020-07-02
Start date
2017-10-12
Completion date
Unknown
Last updated
2021-09-07

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Adenosine deaminase (ADA) deficiency severe combined immunodeficiency MedDRA version: 20.1 Level: LLT Classification code 10066367 Term: Adenosine deaminase deficiency System Organ Class: 100000004850

Interventions

Trade Name: Strimvelis Product Name: Strimvelis Product Code: [NA] Pharmaceutical Form: Powder for solution for infusion Current Sponsor code: . Concentration unit: Other Concentration type: equal Con

Sponsors

Orchard Therapeutics (Europe) Ltd
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Male or female, paediatric or adult, patients with ADA-SCID, who have been previously treated with Strimvelis or GSK2696273 Informed Consent 2. Capable of giving signed informed consent as described in Appendix 2 which includes compliance with the requirements and restrictions listed in the informed consent form (ICF) and in this protocol. Or signed informed consent provided by the participant’s parent or legal guardian. Are the trial subjects under 18? yes Number of subjects for this age range: F.1.2 Adults (18-64 years) yes F.1.2.1 Number of subjects for this age range 2 F.1.3 Elderly (>=65 years) no F.1.3.1 Number of subjects for this age range

Exclusion criteria

Exclusion criteria: 1. Presence of concomitant condition(s) that in the Investigator’s opinion makes participation in the study unsuitable or may prevent compliance with the protocol requirements. 2. Unlikely to comply with the requirements of the protocol (i.e. attendance for blood sampling on an approximately annual basis) 3. Transportation of viable samples to the EU central laboratory from the participant’s home country is not possible

Design outcomes

Primary

MeasureTime frame
Main Objective: To assess the accuracy and precision of SLiM-PCR methodology for RIS analysis using control insertion site DNA spiked into whole blood samples taken from patients treated with Strimvelis;Secondary Objective: Abundance & Diversity of insertion sites in patients treated with Strimvelis;Primary end point(s): For subject samples spiked with known amounts of control insertion sites mean abundance and %CV will be calculated: •between subjects at every time point •within subjects over time points •between the same sample within a time point within a subject.;Timepoint(s) of evaluation of this end point: Samples will be taken approximately annually for 5 years. The study will include newly treated subjects for whom these samples will be taken approximately annually from 1-5 years relative to the treatment date

Secondary

MeasureTime frame
Secondary end point(s): Clone abundance at each timepoint for each subject will be calculated and displayed. •Clones that demonstrate abundance >5% will be listed •Descriptive statistics (mean, % CV) on clones present >5% will be captured •Shannon Diversity Index •Descriptive statistics (% CV) will be captured;Timepoint(s) of evaluation of this end point: Samples will be taken approximately annually for 5 years. The study will include newly treated subjects for whom these samples will be taken approximately annually from 1-5 years relative to the treatment date

Countries

Italy, Switzerland, Turkey

Contacts

Public ContactClinical

ORCHARD THERAPEUTICS LTD

clinical@orchard-tx.com+4402037270797

Outcome results

None listed

Source: EU CTR (via WHO ICTRP) · Data processed: Feb 4, 2026