ClinicalTrials.gg
Active, not recruitingNCT01866540Updated Dec 6, 2023

Immune Response To Intranasal Influenza Vaccination

An interventional study of FLUENZ in Tonsillitis, Hypertrophy, sponsored by University of Bergen. Active, not recruiting at 1 site in Norway. Open to participants aged 2 Years to 59 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2023-12-06.

Sponsored by University of Bergen · Not applicable, Interventional, and Prevention

From the registry’s dates

  • Primary completion was expected by Dec 2025, 10 months ago, but the record still lists the study as active, not recruiting.
Phase
Not applicable
Study type
Interventional
Enrollment
300
Allocation
Not applicable
Ages
2 Years to 59 Years
Sex
All
01

Study summary

This research during the last decade has focused on the kinetics of the systemic and local immune response to parenteral influenza vaccine in humans. The investigators have shown that normally high numbers of influenza specific antibody secreting cells (ASC) are present in the nasal mucosa of healthy adults but upon parenteral vaccination the numbers remain stable. However, a rapid transient increase in specific ASC is observed in the tonsils and peripheral blood after parenteral vaccination. In the tonsils, this is associated with a significant decrease in both naïve/effector (CD45RA+) and memory (CD45RO+) CD4+ cells upon vaccination. In this study the investigators will extend our work to investigate the characteristics of influenza-specific T- and B-cells induced locally and systemically after intranasal vaccination in man.

Read the detailed description

The clinical trial will be an open study. All subjects eligible for tonsillectomy at Haukeland University Hospital within the specified age range (children: 2 to less than 18 years old and adults >18-59 years old) will receive an invitation to join the study. The primary endpoints of the trial are the evaluation of the systemic and local immune response after live attenuated influenza vaccine. The vaccine specific immune response will be assessed through the induction of specific local and systemic antibody and cellular immune responses, and analyses of the epitopes to which the response is directed. Furthermore the capacity of the vaccine to elicit cross reactive and long lasting immunity will be evaluated.

02

Conditions studied

  • Tonsillitis, Hypertrophy

Keywords

  • influenza, LAIV, immune response
03

In context

Tonsillitis

103 studies on the registry are indexed under Tonsillitis; 12 are open to participants now.

This study's planned enrollment of 300 is above the median of 100 across 87 interventional studies indexed under Tonsillitis.

Browse Tonsillitis studies →

Lead sponsor

University of Bergen is the lead sponsor of 143 studies on the registry; 19 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
2 Years to 59 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

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

  • Healthy children (age range ≥2 and \<18 years old) or adults (>18-59 years old) as concluded from the medical history, physical examination, and clinical judgment) scheduled for tonsillectomy ;
  • Signed from the subject or both parents/ both guardians and from subjects aged 12 years and older;
  • Subjects or guardians able to understand and comply with the study protocol and complete the Adverse Event Form:
  • Subjects able to attend the scheduled visits.

Exclusion criteria

Exclusion Criteria:

  • Persons with a history of anaphylaxis or serious reactions to any vaccine;
  • Person with known to any of the vaccine components (e.g. gelatin, gentamicin, eggs or egg proteins (e.g. ovalbumin);
  • Persons who are pregnant
  • Persons who have had a temperature >38oC during the previous 72 hours;
  • Persons who have had an acute respiratory infection during the last 7 days;
  • Persons who are clinically immunodeficient due to conditions or therapy such as: acute and chronic leukaemias; lymphoma; symptomatic infection; cellular immune deficiencies; and high-dose ;
  • Persons with severely immunocompromised family members;
  • Persons with severe asthma or active wheezing.
Terms in these criteria, in plain language(5)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Hypersensitivity

An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.

Immunosuppression

A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.

Read whether the line is about a condition or about medicines, and which medicines and doses it means.

HIV

The human immunodeficiency virus, which weakens the immune system.

Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.

05

Study design

Phase
Not applicable
Primary purpose
Prevention
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
300 participants (estimated)

Study arms

  • Experimental
    Fluenz vaccine

    LAIV vaccine

    Drug: FLUENZ

Interventions

  • DrugFLUENZ

    live attenuated influenza vaccine

    Also known as: FLUMIST

06

What researchers measure

Primary outcomes

  1. evaluation of the systemic and local immune response after live attenuated influenza vaccine.

    Measurement of systemic and local immune responses in immunological assays

    Time frame: 1 year

Other outcomes

  1. Influenza specific responses

    induction of specific local and systemic antibody and cellular immune responses, and analyses of the epitopes to which the response is directed. Furthermore the capacity of the vaccine to elicit cross reactive and long lasting immunity will be evaluated

    Time frame: 31.12.2015

07

Study locations

1 site
08

References and documents

Publications

  • Lartey S, Zhou F, Brokstad KA, Mohn KG, Slettevoll SA, Pathirana RD, Cox RJ. Live-Attenuated Influenza Vaccine Induces Tonsillar Follicular T Helper Cell Responses That Correlate With Antibody Induction. J Infect Dis. 2020 Jan 1;221(1):21-32. doi: 10.1093/infdis/jiz321. PubMed 31250024 ↗
  • Islam S, Zhou F, Lartey S, Mohn KGI, Krammer F, Cox RJ, Brokstad KA. Functional immune response to influenza H1N1 in children and adults after live attenuated influenza virus vaccination. Scand J Immunol. 2019 Oct;90(4):e12801. doi: 10.1111/sji.12801. Epub 2019 Sep 2. PubMed 31269273 ↗
  • Islam S, Mohn KG, Krammer F, Sanne M, Bredholt G, Jul-Larsen A, Tete SM, Zhou F, Brokstad KA, Cox RJ. Influenza A haemagglutinin specific IgG responses in children and adults after seasonal trivalent live attenuated influenza vaccination. Vaccine. 2017 Oct 9;35(42):5666-5673. doi: 10.1016/j.vaccine.2017.08.044. Epub 2017 Sep 9. PubMed 28899626 ↗
  • Mohn KGI, Zhou F, Brokstad KA, Sridhar S, Cox RJ. Boosting of Cross-Reactive and Protection-Associated T Cells in Children After Live Attenuated Influenza Vaccination. J Infect Dis. 2017 May 15;215(10):1527-1535. doi: 10.1093/infdis/jix165. PubMed 28368530 ↗
  • Manenti A, Tete SM, Mohn KG, Jul-Larsen A, Gianchecchi E, Montomoli E, Brokstad KA, Cox RJ. Comparative analysis of influenza A(H3N2) virus hemagglutinin specific IgG subclass and IgA responses in children and adults after influenza vaccination. Vaccine. 2017 Jan 3;35(1):191-198. doi: 10.1016/j.vaccine.2016.10.024. Epub 2016 Oct 24. PubMed 27789145 ↗
  • Mohn KG, Brokstad KA, Pathirana RD, Bredholt G, Jul-Larsen A, Trieu MC, Lartey SL, Montomoli E, Tondel C, Aarstad HJ, Cox RJ. Live Attenuated Influenza Vaccine in Children Induces B-Cell Responses in Tonsils. J Infect Dis. 2016 Sep 1;214(5):722-31. doi: 10.1093/infdis/jiw230. Epub 2016 May 30. Erratum In: J Infect Dis. 2016 Nov 15;214(10):1613. doi: 10.1093/infdis/jiw424. PubMed 27247344 ↗
  • Panapasa JA, Cox RJ, Mohn KG, Aqrawi LA, Brokstad KA. The expression of B & T cell activation markers in children's tonsils following live attenuated influenza vaccine. Hum Vaccin Immunother. 2015;11(7):1663-72. doi: 10.1080/21645515.2015.1032486. PubMed 26148331 ↗
  • Mohn KG, Bredholt G, Brokstad KA, Pathirana RD, Aarstad HJ, Tondel C, Cox RJ. Longevity of B-cell and T-cell responses after live attenuated influenza vaccination in children. J Infect Dis. 2015 May 15;211(10):1541-9. doi: 10.1093/infdis/jiu654. Epub 2014 Nov 25. PubMed 25425696 ↗
  • Pidelaserra Marti G, Isdahl Mohn KG, Cox RJ, Brokstad KA. The influence of tonsillectomy on total serum antibody levels. Scand J Immunol. 2014 Nov;80(5):377-9. doi: 10.1111/sji.12213. No abstract available. PubMed 25039393 ↗
09

Timeline

Tracking since Sep 25, 2026
Not marked actual or estimatedDates not marked actual or estimated

The record gives a start of Oct 2012, a primary completion of Dec 2025 and a completion of Dec 2030. It does not say whether these dates are actual or estimated.

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

Registered
Oct 22, 2012
First posted
May 31, 2013
Start
Oct 1, 2012
Primary completionEst.
Dec 31, 2025
CompletionEst.
Dec 31, 2030
Last update
Dec 6, 2023
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.
No changes since tracking began. The registry record was last updated on Dec 6, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT01866540
Responsible party
Rebecca Cox (Professor, University of Bergen) — Principal investigator
First posted
May 31, 2013
Start date
Oct 1, 2012
Primary completion
Dec 31, 2025 (estimated)
Completion
Dec 31, 2030 (estimated)
Last update
Dec 6, 2023

Study contacts

Hans Jørgen Aarstad
principal investigator · Haukeland University Hospital

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is active, not recruiting, as verified in Dec 2023. You cannot join it, but the record below documents what was studied.

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Discussion

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Studies of the drug tested here: FluMist

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