ClinicalTrials.gg
TerminatedNCT02673736Updated Aug 2, 2018

A Study of PLX73086 in Advanced Solid Tumors and Locally Advanced or Refractory Tenosynovial Giant Cell Tumor

A Phase 1 interventional study of PLX73086 in Solid Tumors, Tenosynovial Giant Cell Tumor and Synovitis, Pigmented Villonodular, sponsored by Plexxikon. Terminated at 3 sites in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2018-08-02.

Primary conditionSynovitis, Pigmented VillonodularRegistry: Giant Cell Tumor of Tendon SheathReclassifiedWhy we changed it
Registry
Giant Cell Tumor of Tendon Sheath — the first condition term the registry derived for this study.
ClinicalTrials.gg
Synovitis, Pigmented Villonodular
Why
  1. The study's listed conditions name Synovitis, Pigmented Villonodular, a narrower term within Giant Cell Tumor of Tendon Sheath.
Confidence
High: the new condition is named in the study's own listed conditions. Of 351 hand-checked studies reclassified this way, 68% were exactly right and 84% in the right disease family; the registry's first term was right for 5% (measured 2026-10-21). How we classify →
Wrong?
Tell us the study's main condition →

Sponsored by Plexxikon (part of Daiichi Sankyo) · Phase 1, Interventional, and Treatment

Why this study was terminated
Discontinued
Phase
Phase 1
Study type
Interventional
Enrollment
11
Allocation
Not applicable
Ages
18 Years and older
Sex
All
01

Study summary

The purpose of this research study is to evaluate safety, pharmacokinetics and preliminary efficacy of the investigational drug PLX73086 in subjects with solid tumors including subjects with locally advanced or refractory tenosynovial giant cell tumor (TGCT).

02

Conditions studied

  • Solid Tumors
  • Tenosynovial Giant Cell Tumor
  • Synovitis, Pigmented Villonodular

Keywords

  • PLX73086
  • Synovitis, Pigmented Villonodular
  • Tenosynovial Giant Cell Tumor
  • Joint Diseases
  • Neoplasms
  • Synovitis
03

In context

Synovitis, Pigmented Villonodular Reclassified

20 studies on the registry are indexed under Synovitis, Pigmented Villonodular; 2 are open to participants now.

This study's enrollment of 11 is below the median of 36 across 17 interventional studies indexed under Synovitis, Pigmented Villonodular.

Browse Synovitis, Pigmented Villonodular studies →

Lead sponsor

Plexxikon is the lead sponsor of 7 studies on the registry; none are open to participants now.

Compared within Synovitis, Pigmented Villonodular, this study's primary condition as ClinicalTrials.gg classifies it; the registry's first condition term is Giant Cell Tumor of Tendon Sheath. The counts are of registry records indexed under each term, refreshed daily. How we classify →

04

Who can participate

Ages eligible
18 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

  • Age ≥ 18 years old.
  • Part 1: Subjects with solid tumors that are to, relapsed after or intolerant to standard therapy, or for whom no standard therapy exists or who are considered by the investigator to be inappropriate for standard therapy.
  • Part 2: Subjects with confirmed, locally advanced or refractory TGCT (including disease) that has been deemed unresectable by an orthopedic surgeon or similar qualified personnel.
  • by 1.1 criteria.
  • Women of must have a negative pregnancy test within 7 days prior to initiation of dosing and must agree to use an acceptable method of from the time of the negative pregnancy test up to 3 months after the last dose of study drug, Fertile men must also agree to use an acceptable method of birth control while on study drug and up to 3 months after the last dose of study drug.
  • All associated toxicity from previous or concurrent cancer therapy must be resolved (to ≤ Grade 1 or Baseline) prior to study treatment administration.
  • Willingness and ability to provide written prior to any study-related procedures and comply with all study requirements.
  • (ECOG) Performance Status 0-2.
  • ≥ 3 months.
  • Adequate hematologic, hepatic, and renal function.

Exclusion criteria

Exclusion Criteria:

  • Symptomatic .
  • drug use within 14 days (or 5 half-lives, whichever is longer) of the first dose of PLX73086.
  • Major surgical procedure, open (excluding skin cancer resection), or significant traumatic injury within 14 days of initiating study drug (unless the wound has healed) or anticipation of the need for major surgery during the study.
  • Active secondary unless the malignancy is not expected to interfere with the evaluation of safety and is approved by the Medical Monitor. Examples of the latter include basal or squamous cell carcinoma of the skin, in-situ carcinoma of the cervix, and isolated elevation of prostate-specific antigen. Subjects with a completely treated prior malignancy and no evidence of disease for ≥ 2 years are eligible.
  • Inability to take oral medication or significant nausea and vomiting, malabsorption, external biliary shunt, or significant bowel resection that would preclude adequate absorption.
  • Baseline mean ≥ 450 msec (for males) or ≥ 470 msec (for females) at Screening.
  • cardiac arrhythmias including bradyarrhythmias and/or subjects who require anti-arrhythmic therapy (excluding beta blockers or digoxin). Subjects with controlled atrial fibrillation are not excluded
  • Congenital long QT syndrome or subjects taking concomitant medications known to prolong the QT interval (e.g., tricyclics, azithromycin, methadone).
  • History of clinically significant cardiac disease or congestive heart failure > (NYHA) class 2. Subjects must not have unstable angina (anginal symptoms at rest) or new-onset angina within the last 3 months or myocardial infarction within the past 6 months.
  • Arterial or venous thrombotic or embolic events such as cerebrovascular accident (including ), deep vein thrombosis or pulmonary embolism within the 6 months before start of study medication (except for adequately treated catheter-related venous thrombosis occurring more than 1 month before the start of study medication).
  • Strong inhibitors or inducers as well as inhibitors of breast cancer resistance protein (BCRP) within 14 days or 5 drug half-lives, whichever is longer, before start of study drug.
  • Subjects with > Grade 1 (high or low) serum potassium, magnesium, or calcium levels.
  • Women who are breast-feeding or pregnant.
  • Non-healing wound, ulcer, or bone fracture.
  • Known -positive individuals on combination antiretroviral therapy.
  • Subjects with known active or C, or chronic hepatitis B or C requiring treatment with antiviral therapy.
  • Uncontrolled intercurrent illness (i.e., active infection ≥ Grade 2) or concurrent condition that, in the opinion of the Investigator, would interfere with the study endpoints or the subject's ability to participate.
  • The presence of a medical or psychiatric condition that, in the opinion of the Principal Investigator, makes the subject inappropriate for inclusion in this study.
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.

Relapsed and refractory

Relapsed: the illness came back after treatment had worked. Refractory: it did not respond to treatment, or stopped responding while still on it.

Histologically or cytologically confirmed

The diagnosis was confirmed by looking at a sample under a microscope: tissue from a biopsy or surgery (histology), or cells from a fluid or needle sample (cytology).

Your pathology report is the document that shows this.

Metastases

Cancer that has spread from where it began to other parts of the body. “Metastatic” cancer is cancer that has spread this way.

Measurable disease

The amount of disease can be tracked with a defined measurement, so the study can see whether it shrinks or grows. It might be a tumour measured on a scan or, in some blood cancers such as myeloma, a marker measured in blood or urine.

The criteria or the study team say which measurement counts — having no tumour visible on a scan does not by itself rule you out.

RECIST

The standard rules for measuring tumours on CT or MRI scans, to tell whether a cancer is shrinking, stable or growing during treatment.

“Measurable disease per RECIST 1.1” usually means at least one tumour 10 mm or more at its longest on a CT scan, or a lymph node 15 mm or more across its short axis.

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.

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.

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.

Life expectancy

The study doctor’s estimate of how long someone is likely to live. Criteria use it so that people can stay in the study long enough for it to answer its question.

Brain metastases

Cancer deposits in the brain from a cancer that started elsewhere in the body (CNS metastases include the spinal cord).

Studies differ: some leave out any brain metastases, some accept ones treated and stable for some weeks. Check what this study allows.

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.

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.

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.

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.

NYHA class (heart failure)

The New York Heart Association’s four classes of how much heart failure limits physical activity.

I
No limits: ordinary activity causes no undue tiredness or breathlessness.
II
Slight limits: comfortable at rest, ordinary activity causes symptoms.
III
Marked limits: comfortable at rest, less than ordinary activity causes symptoms.
IV
Symptoms even at rest; any activity makes them worse.

Studies set their own limit — many outside heart failure leave out class III–IV, while heart failure studies may ask for a particular class. Check the class this study names.

TIA (transient ischaemic attack)

A “mini-stroke”: temporary stroke-like symptoms caused by reduced blood flow to part of the brain, spinal cord or eye, without signs of a new stroke on a scan.

Stroke symptoms need emergency care at once, even if they go away.

CYP3A (CYP3A4) inhibitors and inducers

CYP3A is a group of enzymes, mainly CYP3A4, in the liver and gut that break down many medicines. Some medicines, supplements and foods (grapefruit, St John’s wort) slow them down or speed them up, which changes how much of a study drug stays in the body.

Studies list them so they can be avoided or switched; bring a list of everything you take, including supplements.

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.

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.

05

Study design

Phase
Phase 1
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
11 participants (actual)

Study arms

  • Experimental
    PLX73086

    Part 1: Open-label, sequential PLX73086 dose escalation in approximately 36 solid tumors subjects. Part 2: Extension cohort at the recommended phase 2 dose (RP2D) of PLX73086 in approximately 30 subjects with histologically confirmed, unresectable, locally advanced or refractory TGCT (including metastatic disease).

    Drug: PLX73086

Interventions

  • DrugPLX73086
06

What researchers measure

Primary outcomes

  1. Safety of PLX73086, as measured by adverse events and serious adverse events [Part 1 and Part 2 of research study]

    Time frame: 1 year

  2. Area under the concentration-time curve (AUC) of PLX73086 [Part 1 of research study]

    Time frame: 1 year

  3. Maximum observed concentration (Cmax) of PLX73086 [Part 1 of research study]

    Time frame: 1 year

  4. Time to peak concentration (Tmax) of PLX73086 [Part 1 of research study]

    Time frame: 1 year

  5. Half life (t1/2) of PLX73086 [Part 1 of research study]

    Time frame: 1 year

Secondary outcomes

  1. Efficacy of PLX73086 measured by overall response rate (ORR) [Part 1 of research study]

    Time frame: 1 year

07

Study locations

3 sites
  • HonorHealth
    Scottsdale, Arizona 85258, United States
  • Karmanos Cancer Institute
    Detroit, Michigan 48201, United States
  • South Texas Accelerated Research Therapeutics
    San Antonio, Texas 78229, 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
Not marked actual or estimatedDates not marked actual or estimated

The record gives a start of Feb 2016, a primary completion of Jan 2018 and a completion of Jan 2018. It does not say whether these dates are actual or estimated.

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

Registered
Jan 29, 2016
First posted
Feb 4, 2016
Start
Feb 2016
Primary completionActual
Jan 2018
CompletionActual
Jan 2018
Last update
Aug 2, 2018
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 2, 2018, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT02673736
Lead sponsor
Plexxikon
Responsible party
Sponsor
First posted
Feb 4, 2016
Start date
Feb 2016
Primary completion
Jan 2018
Completion
Jan 2018
Last update
Aug 2, 2018

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is terminated, as verified in Aug 2018. You cannot join it, but the record below documents what was studied.

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