ClinicalTrials.gg
CompletedNCT03422510Updated Aug 3, 2020

FIRSTx - A Study of Oral CXA-10 in Primary Focal Segmental Glomerulosclerosis (FSGS)

A Phase 2 interventional study of CXA-10 in Primary Focal Segmental Glomerulosclerosis, sponsored by Complexa, Inc.. Completed at 24 sites in United States. Open to participants aged 13 Years and older. Per ClinicalTrials.gov, last updated 2020-08-03.

Sponsored by Complexa, Inc. · Phase 2, Interventional, and Treatment

From the registry’s dates

  • Primary completion was Jul 2020, 6 years 3 months ago, and no results have been posted to the registry.
Phase
Phase 2
Study type
Interventional
Enrollment
33
Allocation
Randomized
Ages
13 Years and older
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-12

Among 415 studies in Kidney Diseases with a site in United States — 63 open to participants now, 92 under way, 15 of them phase 3. Kidney Diseases · United States.

Enrollment
197th of 318
33 · median 50
Started
2018
with 14 others
Phase 2
67 of 415
6 open now
Registered
256th of 415
by date

Among the 415 studies in Kidney Diseases with a site in United States, this one is the 197th largest by enrollment of the 318 interventional ones, is one of 15 that started in 2018, is one of 67 in phase 2, and was the 256th registered.

By phase

415 studies; the count open now beside each. This study's row is marked.

No phase96 · 19 open
Observational95 · 23 open
Phase 2this study67 · 6 open
Phase 359 · 7 open
Phase 154 · 2 open
Phase 424 · 4 open
Phase 1/216 · 2 open
Phase 2/34 · 0 open

By the year they started

First in 1976; this study’s year is marked. 15 started in 2018.

Size and results

Median enrollment 50 across the 318 interventional studies, 216 across the 92 observational. Of the 295 that completed or were terminated, 125 (42%) have results posted.

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Watch this landscapeDownload CSVWith an account: a weekly mail of what changed among 415 studies in Kidney Diseases with a site in United States, or all of them as a file.
02

Study summary

This is a multicenter, open label, randomized study investigating two dose titration regimens of CXA-10 in subjects at least 18 years of age with primary FSGS.

The study will be performed at approximately 25 study centers across the United States of America (USA). The recruitment period is anticipated to be up to approximately 16 months. Approximately 30 subjects will be randomized to ensure 26 subjects complete the study. An optional 9 month open label is available

Read the detailed description

This is a multicenter, open label, randomized study investigating two dose titration regimens of CXA-10 in subjects at least 18 years of age with primary FSGS.

The study will be performed at approximately 25 study centers across the United States of America (USA). The recruitment period is anticipated to be up to approximately 16 months. Approximately 30 subjects will be randomized.

Study participation for each subject will last up to 5 months. The study will consist of a screening period not to exceed 30 days (1 month), 90-day (3 month) treatment period, and an approximate 28-day (1 month) follow-up period after the last dose of study medication. An optional 9 month open label is available.

03

Conditions studied

  • Primary Focal Segmental Glomerulosclerosis

Keywords

  • FSGS
  • Kidney Disease
  • Proteinuria
  • Nephrotic Syndrome
  • FIRSTx
  • Nitro fatty acids
  • OA-NO2
  • 10-nitro oleic acid
  • Nitro oleic acid
04

Who can participate

Ages eligible
13 Years and older
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. have a diagnosis of primary FSGS confirmed with .
  2. or 24-hour ≥ 40 mL/min/1.73 m2 at Screening.
  3. The subject has a Up/c ratio ≥ 2 g protein/g creatinine based on a 24 hour urine sample collected during Screening (one 24-hour collection between Day -30 and Day -8).
  4. Unless there is an allergy or intolerance, subject must be on an ACEi and/or ARB regimen for a minimum of 4 weeks prior to their screening Up/c assessment. The ACEi and/or ARB regimen must be stable for a minimum of 2 weeks prior to screening Up/c assessment (and there are no plans to change the ACEi/ARB regimen over the course of the study).
  5. If receiving simvastatin containing products: simvastatin (Zocor), Vytorin, or any other combination therapy containing simvastatin, the simvastatin dose should not exceed 20 mg/day.
  6. Non-pregnant, non-lactating, female of who agrees to use a reliable method of or female is of non-childbearing potential defined as surgically sterile (hysterectomy or bilateral tubal ligation) or .

Exclusion criteria

Exclusion Criteria:

  1. The subject has collapsing variant of FSGS on renal .
  2. The subject has secondary FSGS.
  3. The subject has diabetic nephropathy.
  4. The subject has any other form of acquired (including biopsy proven obesity-induced FSGS) or hereditary glomerular nephropathy.
  5. The subject has a prolonged interval.
  6. The subject is hypertensive.
  7. The subject has a history of cardiovascular events, arrhythmias, recurrent fainting, palpitations, or family history of congenital prolonged QT syndromes or sudden unexpected death due to a cardiac reason.
  8. The subject has any known bleeding disorders or significant active peptic ulceration in the opinion of the investigator that precludes enrollment into this study.
  9. The subject has clinically significant anemia in the opinion of the investigator that precludes enrollment into this study.
  10. The subject has a history of any primary , including a history of melanoma or suspicious undiagnosed skin lesions, with the exception of the following:

    1. Basal cell or squamous cell carcinomas of the skin,
    2. Cervical carcinoma in situ,
    3. Other malignancies curatively treated and with no evidence of disease for at least 5 years, or
    4. Prostate cancer which is not currently or expected, during the study, to undergo radiation therapy, chemotherapy, and/or surgical intervention, or to initiate hormonal treatment.
  11. The subject has a history of organ transplantation.
  12. The subject has a history of .
  13. At the time of Screening (Visit 1), the subject has any co-existing disease or condition.
  14. Since the time of presentation of symptoms/diagnosis of FSGS: the subject has received systemic (oral or parenteral) high-dose, long-term therapy (prednisone or alternative glucocorticoid) to treat kidney disease
  15. Subject has a history of therapy (calcineurin inhibitors, rituximab, or other non-steroid immunosuppressants).
  16. The subject has a history of herbal or natural medication use (including fish oil) within 2 weeks or 5 half-lives, whichever is longer, prior to Baseline
  17. The subject is currently taking a drug that may affect the measurement of serum creatinine (e.g. cimetidine, Bactrim, Pyridium).
  18. The subject is currently taking a newly prescribed drug or new prescription for an increased dose of an existing drug that is known to prolong the QTc interval and has been associated with Torsades de pointes (a list is provided in Appendix H). Note: Stable doses of these drugs are permitted (i.e., subject has received the same dose and regimen for at least 30 days prior to Screening [Visit 1] with no anticipated changes to the dose or regimen during the study).
  19. The subject is currently taking endothelin receptor antagonists, dimethyl fumarate (Tecfidera™), orlistat, fibrates (fenofibrate, bezafibrate, gemfibrozil and ciprofibrate), niacin or lomatapide.
  20. The subject has any of the following abnormal laboratories at Screening:

    1. Serologic evidence of HIV, , or based on HIV antibody, HBsAg, and HCV Ab,
    2. Absolute lymphocyte counts below the lower limit of normal of the reference range
    3. (AST) and/or alanine aminotransferase (ALT) > 3.0X (ULN), alkaline phosphatase > 2X ULN of liver origin, and total >2X ULN. If all LFTs are within normal limits (WNL) and total bilirubin is elevated, examination of direct and indirect bilirubin may be conducted to evaluate for Rotor's/Gilbert's Syndrome. Subjects with Rotor's/Gilbert's Syndrome may be enrolled.
  21. Female subject with a positive urine beta-human chorionic gonadotropin (β-hCG) test at Screening (Visit 1) (all females) or Baseline (Visit 2) (females of or with a history of bilateral tubal ligation in the absence of documented menopause).
  22. The subject has received a within 6 weeks prior to Baseline (Visit 2) or plans to receive a live attenuated vaccine during the study period.
  23. The subject has a recent history (within one year prior to Screening [Visit 1]) of abusing alcohol or illicit drugs (including marijuana) or history of extensive illicit intravenous drug use.
  24. Any other condition and/or situation that causes the Investigator to deem a subject unsuitable for the study (e.g., due to expected study medication non-compliance, inability to medically tolerate the study procedures, or a subject's unwillingness to comply with study-related procedures).
  25. The subject has known to CXA-10, its metabolites, or formulation .
  26. The subject has had treatment with any drug or device within 30 days or 5 half-lives (whichever is longer) prior to Screening (Visit 1) (this includes investigational formulations of marketed products, inhaled and topical drugs), or plans to participate in another investigational drug or device study at any time during this study.
  27. The subject weighs \< 40 kg
Terms in these criteria, in plain language(21)

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.

Biopsy and archival tissue

A biopsy takes a small piece of tissue to examine. “Archival tissue” is a sample already taken, for example at diagnosis, and kept by the hospital.

Whether a stored sample will do depends on when it was taken, how much there is and what the study needs. Ask whether the study accepts your stored sample or needs a new biopsy.

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.

Creatinine clearance (CrCl)

How quickly the kidneys clear creatinine, a waste product, from the blood. A study may estimate it from a blood test with age, weight and sex (often by the Cockcroft–Gault formula), or measure it using blood and urine collected over a set time. Given in mL/min; higher is better.

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.

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.

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).

QT and QTc

On an ECG, the QT interval is the time the heart’s lower chambers take to activate electrically and recover in each beat. QTc is that time adjusted for heart rate (QTcF by Fridericia’s formula, QTcB by Bazett’s). Some medicines lengthen it, and a long QTc can raise the risk of a dangerous heart rhythm.

The study may name a correction formula and a limit in milliseconds, often around 450–480.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

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.

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.

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.

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.

Hepatitis B tests

Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.

Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.

Hepatitis C tests

Hepatitis C is a virus that infects the liver. An HCV antibody test can stay positive after an infection has cleared (and is occasionally positive without one); an HCV RNA test shows whether the virus is there now.

After treatment, hepatitis C counts as cured when HCV RNA is still undetectable 12 weeks or more after the treatment ended. Studies often accept people cured this way.

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.

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.

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.

Live vaccines

Vaccines made with a weakened form of the germ, such as measles–mumps–rubella (MMR), chickenpox and yellow fever. They can be risky when the immune system is weakened. Flu injections are not live; the nasal flu spray is.

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.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
33 participants (actual)

Study arms

  • Experimental
    Regimen 1 - CXA-10 75 mg

    Subjects in regimen 1 will start at 75 mg and may stay at 75 mg or increase to 150 mg. This treatment arm stays at 75 mg.

    Drug: CXA-10

  • Experimental
    Regimen 1 - CXA-10 150 mg

    Subjects in regimen 1 will start at 75 mg and may stay at 75 mg or increase to 150 mg. This treatment arm increases to 150 mg.

    Drug: CXA-10

  • Experimental
    Regimen 2 - CXA-10 150 mg

    Subjects in regimen 2 will start at 150 mg and may stay at 150 mg or increase to 300 mg. This treatment arm stays at 150 mg.

    Drug: CXA-10

  • Experimental
    Regimen 2 - CXA-10 300 mg

    Subjects in regimen 2 will start at 150 mg and may stay at 150 mg or increase to 300 mg. This treatment arm increases to 300 mg.

    Drug: CXA-10

Interventions

  • DrugCXA-10

    CXA-10 (10-nitro-9(E)-octadec-9-enoic acid) is a specific isomer of nitro-oleic acid (OA-NO2)

06

What researchers measure

Primary outcomes

  1. Reduction in proteinuria

    overall reduction as measured by percent change from baseline

    Time frame: 3 months

Secondary outcomes

  1. The percent of subjects with of partial remission, modified partial remission, and complete remission

    percent change from baseline

    Time frame: months 1, 2, 3

07

Study locations

24 sites
  • Alabama Neurology Consultants
    Huntsville, Alabama 35805, United States
  • Cedars Sinai Medical Center
    Los Angeles, California 90048-9978, United States
  • Stanford University
    Palo Alto, California 94304, United States
  • A.I. duPont Hospital for Children
    Wilmington, Delaware 19803, United States
  • University of Miami
    Miami, Florida 33136, United States
  • Nephrology Associates of Northern Illinois and Indiana (NANI)
    Chicago, Illinois 60521, United States
  • Northwest Louisiana Nephrology
    Shreveport, Louisiana 71101, United States
  • Kidney Care and Transplant Services of New England
    Springfield, Massachusetts 01107, United States
  • University of Michigan
    Ann Arbor, Michigan 48109, United States
  • St. Clair Nephrology Research
    Roseville, Michigan 48066, United States
  • Clinical Research Consultants-KCMO
    Kansas City, Missouri 64111, United States
  • Albert Einstein College of Medicine, Montefiore
    Bronx, New York 10461, United States
  • Metrolina Nephrology Associates
    Charlotte, North Carolina 28204, United States
  • Levine Children's Hospital
    Charlotte, North Carolina 28207, United States
  • Cleveland Clinic
    Cleveland, Ohio 44195, United States
  • Northeast Clinical Research Center (NCRC)
    Bethlehem, Pennsylvania 18017, United States
  • University of Pennsylvania
    Philadelphia, Pennsylvania 19104, United States
  • Nephrology Associates
    Franklin, Tennessee 37205, United States
  • Texas Tech
    Amarillo, Texas 79106, United States
  • Renal Disease Research Institute
    DeSoto, Texas 75115, United States
  • El Paso Medical Research
    El Paso, Texas 79935, United States
  • Virginia Commonwealth University
    Richmond, Virginia 23298, United States
  • The Polyclinic
    Seattle, Washington 98104, United States
  • Providence Sacred Heart Medical Center and Children's Hospital
    Spokane, Washington 99204, United States
08

References and documents

Individual participant data

Plan to share: Undecided

No publications or documents are linked to this record.

09

Timeline

Tracking 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

Ran from Apr 2018 to primary completion in Jul 2020, 27 months.

Of 41 phase 2 interventional studies under Kidney Diseases, half reached primary completion within 26 months of starting (the median), counting those still running; a quarter within 19 and three quarters within 43. This study's 27 months is close to that.

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

Registered
Jan 30, 2018
First posted
Feb 5, 2018
StartActual
Apr 15, 2018
Primary completionActual
Jul 31, 2020
CompletionActual
Jul 31, 2020
Last update
Aug 3, 2020
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 Aug 3, 2020, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03422510
Lead sponsor
Complexa, Inc.
Collaborators
Kidney Research Network, formerly NephCure Accelerating Cures Institute, Medpace, Inc., MicroConstants, Arkana Labs, NephCure Kidney International
Responsible party
Sponsor
First posted
Feb 5, 2018
Start date
Apr 15, 2018
Primary completion
Jul 31, 2020
Completion
Jul 31, 2020
Last update
Aug 3, 2020

Study contacts

Theodore Danoff, MD
study director · Complexa, Inc.

Oversight

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

Not currently enrolling

This study is completed, as verified in Jul 2020. You cannot join it, but the record below documents what was studied.

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Discussion

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Studies of the drug tested here: CXA-10

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