ClinicalTrials.gg
Not yet recruitingNCT07903519CRRTinfUKUpdated Oct 29, 2026

Effect of Filter Lifespan in CRRT on New Infections in Critically Ill Patients With AKI

An observational study in Acute Kidney Injury, sponsored by Guy's and St Thomas' NHS Foundation Trust. Not yet recruiting at 1 site in United Kingdom. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-10-29.

Sponsored by Guy's and St Thomas' NHS Foundation Trust · Observational

Updated Oct 29, 2026Newly registeredGo to Updates ↓
Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
630
Ages
18 Years and older
Sex
All
01

Study summary

This observational study aims to explore the factors that influence the risk of new infections in critically ill patients with acute kidney injury (AKI) requiring continuous renal replacement therapy (CRRT) in the UK.

Read the detailed description

Acute kidney injury (AKI) is a potentially life threatening condition which affects 1 in 2 patients in the Intensive Care Unit (ICU). Patients often need renal replacement therapy (RRT). A secondary analysis of a RCT showed an association between circuit life and risk of infections.

The purpose of this study is to investigate the specific factors that influence the risk of new infections in critically ill patients with AKI requiring continuous renal replacement therapy (CRRT) in the UK and whether longer filter life is indeed a contributing factor.

02

Conditions studied

  • Acute Kidney Injury

Browse trials for

Keywords

  • acute kidney injury
  • renal replacement therapy
03

In context

Acute Kidney Injury

1,691 studies on the registry are indexed under Acute Kidney Injury; 395 are open to participants now.

This study's planned enrollment of 630 is above the median of 160 across 814 observational studies indexed under Acute Kidney Injury.

Browse Acute Kidney Injury studies →

Lead sponsor

Guy's and St Thomas' NHS Foundation Trust is the lead sponsor of 295 studies on the registry; 80 are open to participants now.

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

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

critically ill adult patients with AKI requiring CRRT

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

  • age ≥ 18 years
  • critically ill patients with AKI in whom CRRT is planned

Exclusion criteria

Exclusion Criteria:

  • chronic kidney disease with \<30ml/min/1.73m2
  • Chronic dialysis dependency
  • kidney transplant
  • known (Glomerulo-) nephritis, interstitial nephritis, vasculitis
  • known to be on , including Methotrexate, Cyclosporine, Antibody immunosuppression (e.g., rituximab, infliximab), as long-term medication at a dose above the cushing threshold
  • known chronic inflammatory diseases (e.g. arthritis, with a of \< 0.05 x 10E/l, chronic hepatitis)
  • participation in an interventional trial within the last 3 months investigating a drug that affects kidney function
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.

GFR and eGFR (kidney filtering)

GFR (glomerular filtration rate) is how much blood the kidneys filter each minute. It is usually estimated from a blood test — eGFR, by formulas such as CKD-EPI or MDRD — and some studies ask for it to be measured directly instead. Usually given in mL/min/1.73 m².

Check the method, the units and the minimum the study states. A value of 90 or above is in the normal-or-high range, but kidney damage can show in other tests too.

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.

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.

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.

CD4 count

The number of CD4 cells, a type of white blood cell, in a given amount of blood. It is used to follow how well the immune system is doing in HIV.

05

Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
630 participants (estimated)
Patient registry
No
Biospecimen retention
Samples without dna

Groups and cohorts

  • patients with AKI

    treated with CRRT

06

What researchers measure

Primary outcomes

  1. number of new infections

    the number of new infections since start of CRRT, defined as new infections after initiation of CRRT

    Time frame: up to day 28

Secondary outcomes

  1. Renal and survival outcomes

    1\. Days on renal replacement therapy (RRT) from start of CRRT until day 28

    Time frame: 28 days

  2. Duration of mechanical ventilation from start of CRRT

    days on mechanical ventilation

    Time frame: day 28

  3. hospital length of stay

    days in hospital

    Time frame: day 60

07

Study locations

1 site
08

References and documents

Individual participant data

Plan to share: Undecided

No publications or documents are linked to this record.

09

Timeline

1 registry update since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Start is estimated for Nov 2026; primary completion for Dec 2027, 13 months later.

Of 349 non-industry observational studies under Acute Kidney Injury, half reached primary completion within 24 months of starting (the median), counting those still running; a quarter within 12 and three quarters within 42. This study's planned 13 months is below that.

Counting every sponsor, half of 364 studies reached it within 24 months; a quarter within 12 and three quarters within 42.

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

Registered
Sep 19, 2025
First posted
Oct 29, 2026
StartEst.
Nov 1, 2026
Primary completionEst.
Dec 31, 2027
CompletionEst.
Jun 1, 2028
Last update
Oct 29, 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.
Registered
First appeared on the registry. No changes since
Oct 29, 2026
Show all 1 update
  1. Oct 29, 2026
    First appeared on the registry

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
NCT07903519
Responsible party
Sponsor
First posted
Oct 29, 2026
Start date
Nov 1, 2026 (estimated)
Primary completion
Dec 31, 2027 (estimated)
Completion
Jun 1, 2028 (estimated)
Last update
Oct 29, 2026

Study contacts

Marlies Ostermann, PhD
Contact
m.ostermann@nhs.net
+447742514213
Gillian Radcliffe
Contact
gill.radcliffe@nhs.net
00442071883036
Marlies Ostermann
principal investigator · Guy's & St. Thomas Hospital

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is not yet recruiting, as verified in Sep 2026. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion