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Lymphangioleiomyomatosis, a Study on Cathepsin K

Study of New Potential Biomarkers of Lymphangioleiomyomatosis: Determination of Cathepsin K, Cystatin C, Collagen Telopeptides and Chondroitin Sulfates

Status
Completed
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT05323370
Acronym
LAM-CAK
Enrollment
19
Registered
2022-04-12
Start date
2022-05-31
Completion date
2022-10-30
Last updated
2023-03-29

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

Conditions

Lymphangioleiomyomatosis, Tuberous Sclerosis Complex

Keywords

urine

Brief summary

This is a physiopathological case-control, non-interventional, monocentric study of adult patients with lymphangioleiomyomatosis. The controls are patients followed in neurology at the CHU of Tours for a tuberous sclerosis complex without lymphangioleiomyomatosis, the healthy volunteers are women with neither pulmonary nor renal pathology and recruited at the clinical investigation centre of the CHU of Tours.

Interventions

OTHER24h urine

Urine samples will be collected at home over 24 hours

OTHERurine sample

A urine sample of 20cc will be collected

Sponsors

University Hospital, Tours
Lead SponsorOTHER

Study design

Observational model
CASE_CONTROL
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
FEMALE
Age
18 Years to No maximum
Healthy volunteers
Yes

Inclusion criteria

for patients with lymphangioleiomyomatosis * Age ≥ 18 years * Female carrier of lymphangioleiomyomatosis according to ERS criteria Inclusion criteria for healthy female volunteers * Age ≥ 18 years * Women with no history of lymphangioleiomyomatosis, pulmonary, renal or osteoporotic disease Inclusion criteria for tuberous sclerosis complex patients without lymphangioleiomyomatosis * Age ≥ 18 years * Woman followed for tuberous sclerosis complex for whom a chest CT scan less than 3 years old does not objectify a pulmonary cyst. (= without lymphangioleiomyomatosis) Non-inclusion criteria * Woman under judicial protection * Woman with a urinary tract infection within 15 days * Person who objected to the data processing

Design outcomes

Primary

MeasureTime frameDescription
urine cathepsin K proteins levelsinclusion visitcomparison of urine cathepsin K protein levels in the 3 groups
urine cathepsin K activityinclusion visitcomparison of urine cathepsin K activity in the 3 groups

Secondary

MeasureTime frameDescription
serum level of chondroitin sulphatesinclusion visitmeasurement in lymphangioleiomyomatosis patients
renal angiolipomasinclusion visitmeasurement of the size of renal angiomyolipomas in lymphangioleiomyomatosis patients
urinary quantity of cystatin Cinclusion visitcomparison of urine cystacin C quantity in the 3 groups
VEGF-D measurementinclusion visitmost recent measurement of VEGF-D blood levels in lymphangioleiomyomatosis patients
T-score measurementinclusion visitT-score measurement of the most recent bone densitometry in lymphangioleiomyomatosis patients
FEV1 measurementinclusion visitmost recent FEV1 measurement as % of predicted value in lymphangioleiomyomatosis patients
urinary quantity C and N-telopeptides of type 1 collageninclusion visitcomparison in the 3 groups

Countries

France

Outcome results

None listed

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