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Host-pathogen Interactions in Meningococcal Disease: Finding the Key That Fits the Lock

Host-pathogen Interactions in Meningococcal Disease: Finding the Key That Fits the Lock

Status
Withdrawn
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT02727465
Acronym
Lock and Key
Enrollment
0
Registered
2016-04-04
Start date
2016-03-31
Completion date
2019-12-31
Last updated
2017-04-05

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

Conditions

Meningitis

Brief summary

At any time, around 10% of people carry meningococcal bacteria in the nose and throat, which can cause meningitis, blood poisoning and other serious illnesses. Most people carry these bacteria and never become ill, yet a very small proportion go on to develop these illnesses which can result in life long disabilities or death. The mechanism by which this happens is poorly understood and has been studied in various ways, usually focussing on the bacteria or on the individual, but none has given a definitive answer. This study will be the first of its kind and will assess the interaction between the host and the bacteria at the genetic level, through genetic mapping, helping us to understand what makes some people susceptible to this infection.

Detailed description

At any time, around 10% of people carry meningococcal bacteria in the nose and throat, which can cause meningitis, blood poisoning and other serious illnesses. Most people carry these bacteria and never become ill, yet a very small proportion go on to develop these illnesses which can result in life long disabilities or death. The mechanism by which this happens is poorly understood and has been studied in various ways, usually focussing on the bacteria or on the individual, but none has given a definitive answer. This study will be the first of its kind and will assess the interaction between the host and the bacteria at the genetic level, through genetic mapping, helping us to understand what makes some people susceptible to this infection.

Interventions

OTHERMeningitis cases

None - blood draw only

Sponsors

Public Health England
Lead SponsorOTHER_GOV

Study design

Observational model
COHORT
Time perspective
OTHER

Eligibility

Sex/Gender
ALL
Healthy volunteers
No

Inclusion criteria

* any individual with culture-confirmed IMD in England from 01 September 2015 to 31 August 2019 * written informed consent from the individual, the parent (for children aged \<16 years) or next-of-kin (for non-survivors)

Exclusion criteria

* any individual who does not fulfil the inclusion criteria Temporary

Design outcomes

Primary

MeasureTime frameDescription
informed consent obtained for all culture-confirmed IMD to sequence their genome.up to 55 monthsenrol cases

Secondary

MeasureTime frameDescription
creation of a functional database linking anonymised whole genome human and meningococcal sequences with data collected through national surveillanceup to 55 monthsconstruction of reference database
detailed genetic analysis on human-pathogen pairs, focussing particularly on (but not restricted to) the human complement system and the respective meningococcal binding proteins.up to 55 monthsGenetic analysis
visualising potential host-pathogen interactions through computer modellingup to 55 monthscomputer modelling

Countries

United Kingdom

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026