ClinicalTrials.gg
TerminatedNCT05022797Updated May 13, 2024

Reduction of MTX Levels After Glucarpidase Treatment in DLBCL Patients at Risk of CNS

A Phase 2 interventional study of Glucarpidase 1000 UNT [Voraxaze] in Diffuse Large B-Cell Lymphoma and Drug Toxicity, sponsored by Fundacion CRIS de Investigación para Vencer el Cáncer. Terminated at 2 sites in Spain. Open to participants aged 18 Years to 70 Years. Per ClinicalTrials.gov, last updated 2024-05-13.

Sponsored by Fundacion CRIS de Investigación para Vencer el Cáncer · Phase 2, Interventional, and Treatment

Why this study was terminated
closed because of low recruitment
Phase
Phase 2
Study type
Interventional
Enrollment
3
Allocation
Not applicable
Ages
18 Years to 70 Years
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-13

Among 128 studies in Lymphoma, Large B-Cell, Diffuse with a site in Spain — 19 open to participants now, 39 under way, 11 of them phase 3. Lymphoma, Large B-Cell, Diffuse · Spain.

Enrollment
117th of 120
3 · median 112
Started
2021
with 11 others
Phase 2
34 of 128
4 open now
Registered
95th of 128
by date

Among the 128 studies in Lymphoma, Large B-Cell, Diffuse with a site in Spain, this one is the 117th largest by enrollment of the 120 interventional ones that give a count, is one of 12 that started in 2021, is one of 34 in phase 2, and was the 95th registered.

Lymphoma, Large B-Cell, Diffuse

1,869 studies on the registry are indexed under Lymphoma, Large B-Cell, Diffuse; 356 are open to participants now.

Browse Lymphoma, Large B-Cell, Diffuse studies →

Open to participants now

19 of the 128 studies in Lymphoma, Large B-Cell, Diffuse with a site in Spain are open now. Recruiting first, the newest first:

14 more — sign in →

All 19 open studies →

A study can be open while its sites in Spain have not opened yet or have stopped. Only those recruiting at a site in Spain →

Who these studies take

Of the 265 Lymphoma, Large B-Cell, Diffuse studies recruiting now, 177 (67%) set no upper age limit and 50 (19%) stop at 75 or younger; 25 take children under 18; 7 take healthy volunteers.

This study: 18 Years to 70 Years · all sexes · no healthy volunteers.

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02

Study summary

Diffuse large B-cell lymphoma (DLBCL) is an aggressive subset of non-Hodgkin's lymphoma (NHL). Central nervous system (CNS) involvement in patients with NHL is a serious complication. The outcome of patients with CNS relapse is extremely poor, with a median survival of 4-6 months.

One approach to reduce CNS relapse in high-risk patients is the use of systemic high-dose intravenous (iv) methotrexate (HMTX) chemotherapy. Currently available methods of MTX clearance, including dialysis-based methods, have shown limited efficacy.

Glucarpidase hydrolyses MTX to inactive metabolites that are partially metabolised by the liver, thus providing an alternative route of limiting renal excretion.

The administration of Glucarpidase could prevent MTX toxicity as a whole as well as the following consequences. The aim of this study is to analyse the prophylactic effect of 2,000 units of glucarpidase administered after 12 hours of HDMTX on MTX clearance and on the incidence and severity of MTX-related toxicity.

Read the detailed description

Glucarpidase hydrolyzes the terminal glutamate residue from MTX to inactive metabolites [4-deoxy-4-amino-N10-methylpteroic acid (DAMPA) and glutamic acid] which are partially metabolized by the liver, thus providing an alternative route of limitation to renal excretion.

Administration of Glucarpidase cause a clinically important 99% or greater sustained MTX reduction being immediate in most patients, 87% of them experiencing a ≥ 95% reduction in serum MTX concentration at a median of 15 min post-Glucarpidase Early administration of Glucarpidase could avoid MTX toxicity as whole as well as the following consequences. The aim of this study is to analyze the prophylactic effect of 2,000 unit Glucarpidase administered after 12 hour of HDMTX on the MTX clearance and on the incidence and severity of MTX related-toxicity.

According to normal clinical practice, patients will receive for curative intent rituximab cyclophosphamide, doxorubicin, vincristine, and prednisone (R-CHOP) by standard protocol on a 21-day cycle (a total of 6 cycles), plus 3 infusion of systemic intravenous MTX at a dose of 3 g/m2 for CNS prophylaxis (HDMTX) at cycles 1, 3 and 5.

Glucarpidase will be capped at 2,000 units per dose (in two vials of 1,000 units/vial) given as a single intravenous (IV) bolus injection over 5 minutes. Glucarpidase will be administered 12 hours following each HDMTX at cycles 1, 3 and 5.

Clinical laboratory evaluation of Hematology and Biochemistry will be conducted at each step of this study, according to the local laboratory method, to determine occurrences of adverse events (AE) or serious adverse events (SAE) following the Common Terminology Criteria for Adverse Events version 5.0 (CTCAE 5.0).

According to standard practice, the blood MTX levels will be monitored according to the local laboratory method, already in place for this purpose. In addition, blood samples for analysis of MTX levels by LC-MS/MS should be drawn at the different time-point.

Therefore, the pharmacokinetic study of MTX clearance includes a quantification of MTX plasma level before and after Glucarpidase administration, assessed by Liquid chromatography-tandem mass spectrometry (LC-MS/MS) analysis performed by Eurofins\|ADME Bioanalyses. Collection times are defined as described:

T0 is the time 12 hours after the MTX infusion starts, with reference to T0. As previously mentioned, plasma MTX levels will be measured at:

  • T0 (pre-Glucarpidase i.v. injection) It will be considered maximum plasma MTX level
  • T0+15 minutes (15 minutes after the end of Glucarpidase administration)
  • T0+6hrs (6 hours after Glucarpidase is given)
  • T0+ 12 hrs (12 hours after Glucarpidase is given)
  • T0+ 24hrs (24 hours after Glucarpidase is given Antibodies anti-Glucarpidase (ADA) will be assessed 12 hours after the MTX infusions starts before Glucarpidase administration (reference to T0) and at the follow-up visit month 3 (after the end of RCHOP treatment). In case of positively response for antibodies at any time-point, the evaluation of immune response to Glucarpidase includes a quantification of the Glucarpidase immunogenicity assessed by a neutralization assay performed by Eurofins\|ADMEBioanalyses.

Statistical analyses will be conducted based on the available data, without using techniques for inputting missing values, but describing the number of missing values for each analysis. All statistical tests will be performed at a significance level of α = 0.05, unless specifically stated otherwise.

The primary outcome will be assessed by a descriptive analysis of MTX levels: - As a categorical variable: >95% reduction of MTX (yes/no) after 6 hours after administration of 2,000 units of Glucarpidase. In addition, co-primary outcomes will be assessed by a descriptive analysis of MTX levels: - As a numerical variable: MTX in µmol/L before and after 15 minutes, 6 hours, 12 hours and 24 hours after administration of 2,000 units of Glucarpidase. - As a numerical variable: MTX change from baseline in µmol/L after 15 minutes, 6 hours, 12 hours and 24 hours after administration of 2,000 units of Glucarpidase. - As a categorical variable: >95% reduction of MTX (yes/no) after 15 minutes, 12 hours and 24 hours after administration of 2,000 units of Glucarpidase.

03

Conditions studied

  • Diffuse Large B-Cell Lymphoma
  • Drug Toxicity
04

Who can participate

Ages eligible
18 Years to 70 Years
Sexes eligible
All
Accepts healthy volunteers
No

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

  1. Subjects aged 18-70 years
  2. Patients with diagnosis of diffuse large B-cell lymphoma
  3. Patients at high risk of CNS involvement (>2 extranodal sites plus an elevated LDH or /and involvement of high-risk extranodal sites including testes, paranasal sinuses, breast, liver, adrenal and renal)
  4. Patients who will receive HDMTX (three cycles) into R-CHOP regimen (6 cycles) prescribed according to normal clinical practice
  5. Absence of focal neurological signs
  6. Absence of CNS involvement determined by cerebrospinal fluid (CSF) cytometry flow test prior to start treatment
  7. (ECOG) performance status 0-2
  8. 1800-7500/µL, count 130.000- 450.000/ µL, 13,5-18 g/dL,
  9. Serum creatinine ≤1.5 x the (ULN) or (GFR) ≥60ml/min/1.73m\^2
  10. Total serum ≤2 x ULN. Serum (AST) and/or alanine transaminase (ALT) ≤2.5 x ULN
  11. Ability to understand and the willingness to sign a written document
  12. In women of (from menarche and until becoming [i.e., no menses for 12 months with an alternative medical cause], unless permanently sterile) and men, use of highly effective measure of (abstinence, hormonal contraception, intra-uterine device [IUD], intrauterine hormone-releasing system, [IUS], or anatomical sterility in self or partner) committed during 3 months after the last IMP administration.

Exclusion criteria

Exclusion Criteria:

  1. Malignant disease, other than those being treated in this study. Exceptions to this exclusion include that were treated curatively and have not recurred within 2 years after completion of treatment.
  2. Patients suffered from cardiovascular diseases (arrhythmias, previous heart failure, thromboembolic disease)
  3. Previous treatment with Glucarpidase
  4. Pregnant or breastfeeding women
  5. Concomitant treatment with agents which interact with methotrexate metabolism or excretion
  6. Known intolerance/ to Glucarpidase or any of its .
Terms in these criteria, in plain language(15)

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.

ECOG performance status

A scale of how much an illness limits everyday activity. For people being assessed to join a study, scores run from 0 (fully active) to 4; lower is more active.

0
Fully active, no restrictions.
1
Limited in strenuous activity, but walking and able to do light work, such as housework or office work.
2
Walking and able to look after yourself, but unable to work; up and about more than half of waking hours.
3
Able to look after yourself only in part; in bed or a chair more than half of waking hours.
4
Unable to look after yourself at all; in bed or a chair all day.

Studies most often ask for 0–1 or 0–2. Your doctor gives the score; the WHO scale uses the same steps. The full scale also has 5, which records death.

Absolute neutrophil count (ANC)

The number of neutrophils, white blood cells that help fight infection, in a given amount of blood. Too few raises the risk of infection.

It is a count, not a percentage of the white cells. Limits are written in units that mean the same: ≥ 1.5 × 10⁹/L is ≥ 1,500 per mm³ (µL). Each lab has its own reference range.

Platelets

Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.

Hemoglobin (Hb)

The protein in red blood cells that carries oxygen. A low level is anaemia, which can cause tiredness and breathlessness. Measured in g/dL or g/L (9 g/dL is 90 g/L).

ULN (upper limit of normal)

The top of the normal range for a blood test, as set by the laboratory that runs it. Each lab prints its own range next to your result.

“≤ 2.5 × ULN” means the result can be up to two and a half times that top value.

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.

Bilirubin

A yellow substance made when red blood cells are broken down, which the liver clears. A high level can mean a problem with the liver or the bile ducts.

Criteria often allow more for people with Gilbert’s syndrome, a harmless inherited condition that raises bilirubin.

ALT and AST (liver enzymes)

Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.

Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.

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.

Childbearing potential

Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).

Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.

Postmenopausal

Periods have stopped for good: usually no period for 12 months in a row without another medical reason, sometimes confirmed by a blood test (FSH).

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Cancer (malignancy)

Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.

Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.

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.

Excipients

The other ingredients in a medicine besides the active drug, such as fillers, colours or preservatives.

05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
3 participants (actual)

Study arms

  • Experimental
    Glucarpidase, methotrexate, R-CHOP

    Glucarpidase 2000Units per dose. IV. Bolus injection over 5 minutes. Administered 12 hours following after each HDMTX cycle, for a maximum of 3 cycles.

    Drug: Glucarpidase 1000 UNT [Voraxaze]

Interventions

06

What researchers measure

Primary outcomes

  1. Proportion of patients who achieve significant change blood MTX levels (more than 95% reduction of blood MTX levels) at 6 hours after administration of Glucarpidase

    As a categorical variable: \>95% reduction of MTX (yes/no) after 6 hours after administration of 2,000 units of Glucarpidase.

    Time frame: 6 hours

Secondary outcomes

  1. Change blood MTX levels achieved at 15 minutes, 6 hours, 12 hours and 24 hours after administration of Glucarpidase

    As a numerical variable: MTX in µmol/L before and after 15 minutes, 6 hours, 12 hours and 24 hours after administration of 2,000 units of Glucarpidase.

    Time frame: 15min, 6 hours, 12 hours, 24 hours

  2. Proportion of patients with more than 95% reduction of blood MTX levels after administration of Glucarpidase

    As a numerical variable: MTX change from baseline in µmol/L after 15 minutes, 6 hours, 12 hours and 24 hours after administration of 2,000 units of Glucarpidase.

    Time frame: 15min, 6 hours, 12 hours, 24 hours

  3. Proportion of patients who achieve clinically important reduction (CIR) in blood MTX level at 15 minutes, 6 hours, 12 hours and 24 hours after administration of Glucarpidase.

    CIR is defined as a reduction in blood MTX concentration to ≤ 1 µmol/L in post-Glucarpidase time points. As a categorical variable: reduction in blood MTX concentration to ≤ 1 µmol/L (yes/no) after 15 minutes, 6 hours, 12 hours and 24 hours after administration of 2,000 units of Glucarpidase.

    Time frame: 15min, 6 hours, 12 hours, 24 hours

07

Study locations

2 sites
  • MD Anderson
    Madrid, 28033, Spain
  • Hospital Universitario Ramón y Cajal
    Madrid, 28034, Spain
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from Jul 2021 to primary completion in Nov 2022, 16 months.

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

Registered
Aug 20, 2021
First posted
Aug 26, 2021
StartActual
Jul 19, 2021
Primary completionActual
Nov 22, 2022
CompletionActual
Nov 22, 2022
Last update
May 13, 2024
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 May 13, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05022797
Lead sponsor
Fundacion CRIS de Investigación para Vencer el Cáncer
Collaborators
BioClever 2005 S.L., Eurofins ADME, S.L., NTShub, S.L., BTG International Inc.
Responsible party
Sponsor
First posted
Aug 26, 2021
Start date
Jul 19, 2021
Primary completion
Nov 22, 2022
Completion
Nov 22, 2022
Last update
May 13, 2024

Study contacts

Adolfo De la Fuente, PD
principal investigator · MD Anderson

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 terminated, as verified in May 2024. You cannot join it, but the record below documents what was studied.

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Studies of the drugs tested here: Glucarpidase · Gamma-Glutamyl Hydrolase

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