Nephrological Outcome and Associated Congenital Anomalies in Pediatric Patients with Horseshoe Kidney

December 6, 2024 updated by: IRCCS Azienda Ospedaliero-Universitaria di Bologna
A retrospective, observational multicentre trial on the nephrological outcome and associated congenital anomalies in children with Horseshoe Kidney.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Detailed Description

Congenital abnormalities of the kidney and urinary tract (CAKUT) represent the main cause of CKD in children. Among them, the horseshoe kidney (HSK) represents one of the most frequent and is characterised by the presence of two distinct, functioning kidneys positioned on each side of the spine, fused together at one of the poles. The incidence of this condition is approximately 1 case every 400-600 new births with a prevalence in the male sex with a ratio of 2:1. Even though these children aregenerally asymptomatic and the diagnosis is often incidental , some may develop symptoms due to complications, such as infections, nephrolithiasis and urinary tract obstruction. More rarely risks of neoplastic degeneration and renal damage are described following trauma to the abdomen and lumbosacral spine. This condition is also associated in up to a third of cases with other abnormalities: the most frequent affect the urinary tract and genitals; however, abnormalities affecting other organs or systems as well as well-defined syndromic pictures. Due to its frequent asymptomatic nature, horseshoe kidney is historically considered a condition with a good prognosis and rarely as a risk factor capable of reducing survival or predisposing the kidney to long-term damage.

The primary objective of the study is:

To assess the 'nephrological outcome' understood as 'prevalence of patients who developed' and 'survival time free from": chronic renal failure, proteinuria, hypertension nephrolithiasis, UTI, renal neoplasms and renal trauma.

The secondary objectives of the study are:

  1. Prevalence of congenital and associated genito-urinary and systemic abnormalities;
  2. Description of renal anatomical features;
  3. Assessment of the usefulness of second level radiological investigations (VCUG, static renal scintigraphy, ddynamic renal scintigraphy).

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Observational

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
500

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • Italy
      • Bologna, Italy, 40138
        • Recruiting
        • IRCCS Azienda Ospedaliero-Universitaria di Bologna
        • Contact:
        • Contact:
          • Claudio La Scola

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Child
  • Adult

Accepts Healthy Volunteers

No

Sampling Method

Non-Probability Sample

Study Population

Patients followed at the participating centres from 01/01/2012 to 31/12/2021 for a nephro-urological pathology will be enrolled in the study.

Description

Inclusion Criteria:

  • Patients with confirmed ultrasound and/or scintigraphic diagnosis of horseshoe kidney;
  • Patients with an age at first assessment of between 0 and 18 years;
  • Obtaining written Informed consent.

Exclusion Criteria:

  • Patients with a definitive diagnosis of another form of CAKUT during the diagnostic pathway.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Chronic kidney disease
Time Frame: at baseline

Defined as a reduction in eGFR <90ml/min/1.73m2, calculated using the Schwartz formula(18) corrected for age:

  • δ= 0.45 for children <1 yr
  • δ= 0.55 for children of both sexes from 2 to 12 yrs and for female children aged 13 to 18 yrs
  • δ= 0.70 for children aged 13 to 18 yrs

The different stages of chronic kidney have been further defined according to eGFR:

  • Stage I: >90ml/min/1.73m2
  • Stage II: between 89 and 60ml/min/1.73m2
  • Stage III: between 59 and 30ml/min/1.73m2
  • Stage IV: between 30 and 15ml/min/1.73m2
  • Stadio V: lower than15ml/min/1.73m2 or patient in dialysis
at baseline
Proteinuria
Time Frame: at baseline
Defined as the urinary protein:creatinine ratio (mg/mg) >0.5 in chilrden up to 2 yrs of age and >0.2 in chilrden older than 2 yrs
at baseline
Hypertension
Time Frame: at baseline
Arterial blood pressure ≥95th percentile for sex, age and height, on at least three different readings
at baseline

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Urinary tract infections
Time Frame: at baseline
Confirmed by urine analysis and urine culture in a compatible clinical picture
at baseline
Nephrolithiasis
Time Frame: at baseline
Documented finding by imaging techniques (ultrasound and/or CT) of formations compatible with lithiasis formation
at baseline
Renal neoplasms
Time Frame: at baseline
Diagnosis confirmed by imaging and histology of the neoplasm of renal origin (especially Wilms' tumour)
at baseline
Renal anatomical features
Time Frame: at baseline
Renal length measured as bipolar diameter with renal hypoplasia defined as the presence of kidneys with DBP <5° centile reference for age and height
at baseline
Renal anatomical features
Time Frame: at baseline
Ultrasound description of abnormalities of the renal parenchyma with renal dysplasia defined by the presence of alterations such as: hyperechogenicity, reduced cortico-middular differentiation, reduced cortical thickness due to age, presence of multiple cystic formations
at baseline
Renal trauma
Time Frame: at baseline
Presence of instrumentally documented renal lesions (ultrasound and/or CT scan) following a traumatic episode
at baseline

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
IRCCS Azienda Ospedaliero-Universitaria di Bologna

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Claudio La Scola, MD, PhD, IRCCS Azienda Ospedaliero-Universitaria di Bologna

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
June 1, 2025

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
June 1, 2026

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
June 1, 2026

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
December 3, 2024

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
December 6, 2024

First Posted (Estimated)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
December 11, 2024

Study Record Updates

Last Update Posted (Estimated)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
December 11, 2024

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
December 6, 2024

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
November 1, 2024

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • HSK-PED-23-01

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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