ClinicalTrials.gg
Enrolling by invitationNCT04266093Updated Oct 2, 2026

Gene Therapy Follow up Protocol for Subjects Previously Enrolled in NCI Center for Immuno-Oncology Studies

An observational study in Cervical Intraepithelial Neoplasia, Cervical Neoplasms and Oropharyngeal Neoplasms, sponsored by National Cancer Institute (NCI). Enrolling by invitation at 1 site in United States. Open to participants aged 18 Years to 120 Years. Per ClinicalTrials.gov, last updated 2026-10-02.

Primary conditionSquamous Intraepithelial Lesions of the CervixRegistry: Uterine Cervical DysplasiaReclassifiedWhy we changed it
Registry
Uterine Cervical Dysplasia — the first condition term the registry derived for this study.
ClinicalTrials.gg
Squamous Intraepithelial Lesions of the Cervix
Why
  1. The study's listed conditions name Squamous Intraepithelial Lesions of the Cervix, a narrower term within Uterine Cervical Dysplasia.
Confidence
High: the new condition is named in the study's own listed conditions. Of 351 hand-checked studies reclassified this way, 68% were exactly right and 84% in the right disease family; the registry's first term was right for 5% (measured 2026-10-21). How we classify →
Wrong?
Tell us the study's main condition →

Sponsored by National Cancer Institute (NCI) · Observational

Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
1,000
Ages
18 Years to 120 Years
Sex
All
01

Study summary

Background:

Gene therapy is closely followed by the U.S. Food and Drug Administration (FDA). The FDA requires researchers to conduct long-term follow-up of people who have had the treatment. This study collects data on people who have had gene therapy and sends it to the FDA. The data does not include participants names.

Objective:

To contact current or past participants of gene therapy protocols at least once a year for up to 15 years to ensure they have not had any harmful side effects.

Eligibility:

People aged 18 and older who have had gene therapy in a National Cancer Institute study

Design:

Participants will give their address and telephone number. They will also give and the address and phone number of 1 or 2 other people who will know where they are.

For the first year after gene therapy, participants will give blood samples 3 times (at 3, 6, and 12 months). For the next 4 years, they may have a physical exam and laboratory tests with a home physician. They will get a kit to mail in blood samples. Or they can visit the NIH Clinical Center. They will be asked if they have had any signs of neurological, autoimmune, or blood disorders, or any new cancers.

For years 6 to 15, participants will be contacted yearly via phone or email and asked questions about their health. They may give blood samples.

When the participant dies, if researchers think the death was caused by gene therapy, they will ask the participant s family to allow an autopsy.

Read the detailed description

Background:

The NCI CIO conducts clinical trials utilizing gene transfer. The current FDA requirements for long term follow up may be up to fifteen years for some products. As this time period is frequently longer than studies are expected to be open, a protocol is necessary to ensure the necessary follow up of these subjects

Objectives:

To facilitate collection of long term follow up information on subjects who have participated in gene transfer studies as required by the U.S. Food and Drug Administration and other regulatory groups

Eligibility:

Enrollment on a NCI CIO treatment protocol for gene therapy.

Design:

Patients will undergo physical exams, laboratory evaluations and/or phone follow up as required by the treatment protocol and/or as clinically indicated.

02

Conditions studied

  • Cervical Intraepithelial Neoplasia
  • Cervical Neoplasms
  • Oropharyngeal Neoplasms
  • Squamous Intraepithelial Lesions of the Cervix
  • Hematologic Malignacies

Keywords

  • Gene Transfer
  • Recombinant DNA Product
  • Gamma-Retroviral Vectors
  • Laboratory Evaluation
  • Natural History
03

In context

Squamous Intraepithelial Lesions of the Cervix Reclassified

5 studies on the registry are indexed under Squamous Intraepithelial Lesions of the Cervix; 4 are open to participants now.

Browse Squamous Intraepithelial Lesions of the Cervix studies →

Lead sponsor

National Cancer Institute (NCI) is the lead sponsor of 3,556 studies on the registry; 336 are open to participants now.

Of its 412 completed or terminated interventional studies of FDA-regulated products, 374 (91%) have results posted.

Compared within Squamous Intraepithelial Lesions of the Cervix, this study's primary condition as ClinicalTrials.gg classifies it; the registry's first condition term is Uterine Cervical Dysplasia. The counts are of registry records indexed under each term, refreshed daily. How we classify →

04

Who can participate

Ages eligible
18 Years to 120 Years
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Probability sample

Study population

To facilitate collection of long term follow up information on subjects who have participated in gene transfer studies as required by the U.S. Food and Drug Administration and other regulatory groups

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Subjects who have enrolled on an applicable NCI CIO gene therapy treatment protocol. Age >= 18 years. Note: Children are generally excluded from CIO gene therapy studies and inclusion on this follow-up study will be limited to 18 years and older.

Exclusion criteria

EXCLUSION CRITERIA:

-Children

05

Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
1,000 participants (estimated)

Groups and cohorts

  • Cohort 1

    Subjects who have enrolled on an applicable NCI CIO gene therapy treatment protocol.

    Drug: GeneTherapy

Interventions

  • DrugGeneTherapy

    Observation/ Gene Therapy Long-term Follow-up. Subjects who have enrolled on an applicable NCI CIO gene therapy treatment protocol.

06

What researchers measure

Primary outcomes

  1. To provide long term follow up of patients previously enrolled on treatment protocols in the NCI CIO.

    List of long time adverse event frequency after Gene therapy drug

    Time frame: 15 years

07

Study locations

1 site
  • National Institutes of Health Clinical Center
    Bethesda, Maryland 20892, United States
08

References and documents

09

Timeline

1 registry update since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Started May 2020 (actual). Primary completion is estimated for Oct 2035, 184 months after the start.

How these figures are worked out, and which studies are left out of them.

Registered
Feb 11, 2020
First posted
Feb 12, 2020
StartActual
May 8, 2020
Primary completionEst.
Oct 1, 2035
CompletionEst.
Oct 1, 2050
Last update
Oct 2, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
Minor edits
Nothing that changes what the study is or who can join. Edited: description
1 update, last Oct 2, 2026
Show all 1 update
  1. Oct 2, 2026
    Minor edits only
    + 1 other change: description

From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗

10

Registry details

Key details

Study ID
NCT04266093
Responsible party
Sponsor
First posted
Feb 12, 2020
Start date
May 8, 2020
Primary completion
Oct 1, 2035 (estimated)
Completion
Oct 1, 2050 (estimated)
Last update
Oct 2, 2026

Study contacts

Scott M Norberg, D.O.
principal investigator · National Cancer Institute (NCI)

Oversight

FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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