ClinicalTrials.gg
Active, not recruitingNCT04438824Updated Sep 14, 2026

Palbociclib and INCMGA00012 in People With Advanced Liposarcoma

A Phase 2 interventional study of INCMGA00012 and Palbociclib in Well-differentiated/Dedifferentiated Liposarcoma, sponsored by Memorial Sloan Kettering Cancer Center. Active, not recruiting at 7 sites in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-09-14.

Sponsored by Memorial Sloan Kettering Cancer Center · Phase 2, Interventional, and Treatment

Phase
Phase 2
Study type
Interventional
Enrollment
42
Allocation
Not applicable
Ages
18 Years and older
Sex
All
01

Study summary

The researchers are doing this study to find out whether combining the study drugs palbociclib and INCMGA00012 is an effective and safe treatment for advanced liposarcoma.

"Funding Source - FDA OOPD"

02

Conditions studied

  • Well-differentiated/Dedifferentiated Liposarcoma

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Keywords

  • Palbociclib
  • INCMGA00012
  • 20-062
03

In context

Liposarcoma

160 studies on the registry are indexed under Liposarcoma; 36 are open to participants now.

This study's enrollment of 42 is below the median of 52 across 136 interventional studies indexed under Liposarcoma.

Browse Liposarcoma studies →

Lead sponsor

Memorial Sloan Kettering Cancer Center is the lead sponsor of 1,964 studies on the registry; 327 are open to participants now.

Of its 135 completed or terminated interventional studies of FDA-regulated products, 71 (53%) have results posted.

Counted across the registry records on this site, refreshed daily.

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

  • A diagnosis of or unresectable WD/DD liposarcoma. DD liposarcoma must be present. Unresectable is defined as if the primary tumor a) cannot be safely removed surgically or b) would benefit from systemic therapy prior to a surgical approach
  • by 1.1

    a. Target lesions must not be chosen from a previously irradiated field unless there has been radiographically and/or documented tumor progression in that lesion prior to enrollment

  • Age ≥ 18 years
  • performance status 0 or 1
  • Adequate organ and marrow function as defined below ( indicates institutional upper limit of normal):

    1. ≥ 1.5 x 109/L
    2. ≥ 8.0 g/dL
    3. WBC ≥ 3.0 x 109/L
    4. ≥ 100 x 109/L
    5. ≤ 1.5 X ULN OR Direct ≤ ULN for subjects with total bilirubin levels > 1.5 ULN. Except patients with Gilbert's disease (≤3x ULN)
    6. (SGOT) /ALT (SGPT) ≤ 3 x institutional ULN
    7. > 30 mL/min (calculated by Cockcroft-Gault method)
  • Women of and men must agree to use adequate (hormonal or barrier method of birth control or abstinence) during the trial period through at least 120 days after the last dose of study treatment.
  • Ability to understand and the willingness to sign a written document.
  • Ability to swallow tablets or capsules
  • Patients with that have been treated with definitive surgery or radiation, and have been clinically stable for 3 months are eligible

Exclusion criteria

Exclusion Criteria:

  • Patients who have not recovered from adverse events of prior therapy to ≤ v5 Grade 1, except alopecia and stable neuropathy, which must have resolved to Grade ≤ 2 or baseline.
  • Patients receiving any other agents.
  • Patients who have received prior treatment with a selective CDK4 inhibitor or an /PD-L1 agent
  • Uncontrolled intercurrent illness including, but not limited to, known ongoing or active infection, including uncontrolled , active or C, symptomatic congestive heart failure, unstable angina pectoris, uncontrolled cardiac arrhythmias, psychiatric illness/social situations that would limit compliance with study requirements, clinically significant interstitial lung disease or active noninfectious pneumonitis, or active infection requiring systemic therapy

    1. Patients with a of > 300 and an undetectable viral load who are currently on HAART are eligible for inclusion
    2. Patients with class III or IV congestive heart failure within 6 months of study treatment will be excluded
  • Pregnant women and women who are breast-feeding.
  • History or evidence of symptomatic disease in past 2 years prior to enrollment.

    a. Replacement therapy (e.g., thyroxine for hypothyroidism, insulin for diabetes or physiologic replacement therapy for adrenal or pituitary insufficiency) is not considered a form of systemic treatment for autoimmune disease

  • Prolonged > 450 ms for men and > 470 ms for women at Screening.
  • Patients who have received a within 30 days of the start date of the planned study therapy. Note: Seasonal influenza vaccines for injection are generally inactivated flu vaccines and are allowed; however intranasal influenza vaccines are live attenuated vaccines, and are not allowed
  • Radiation therapy within 2 weeks prior to study Day 1
  • Prior organ transplantation including allogenic stem-cell transplantation
  • Known prior severe to investigational product or any component in its formulations, including known severe hypersensitivity reactions to monoclonal antibodies (NCI CTCAE v 5 Grade ≥ 3)
  • Patients who require concomitant use of medications that strongly induce or inhibit (per section 15.0)
Terms in these criteria, in plain language(30)

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.

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.

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.

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.

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.

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.

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).

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.

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.

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.

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.

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.

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.

CTCAE grade

The US National Cancer Institute’s scale of how severe an adverse event is — any unwanted medical event during a study, such as a symptom, an illness or an abnormal test result, whether or not a treatment caused it. Whether it did is judged separately.

1
Mild.
2
Moderate.
3
Severe.
4
Life-threatening.
5
Death due to the event.

“Side effects of earlier treatment resolved to grade 1 or less” means they have settled to mild or gone.

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.

PD-1, PD-L1 and checkpoint inhibitors

PD-1, PD-L1 and CTLA-4 are proteins that act as brakes on the immune system. Checkpoint inhibitors, such as pembrolizumab or nivolumab, block them so the immune system can attack a cancer.

PD-L1 can also be measured in a tumour sample. Some scores count stained tumour cells only (TPS); others also count certain immune cells (CPS). The study names the score and the minimum it uses.

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.

CD4 count

The number of CD4 cells, a type of white blood cell, in a given amount of blood. It is used to follow how well the immune system is doing in HIV.

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.

Autoimmune disease

A condition in which the immune system attacks the body’s own tissues, such as rheumatoid arthritis, lupus, psoriasis, type 1 diabetes or inflammatory bowel disease.

Immunotherapy studies often leave out active autoimmune disease, and some name exceptions, such as thyroid disease on replacement hormone. Check the exceptions this study lists.

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.

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.

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.

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.

05

Study design

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

Study arms

  • Experimental
    Palbociclib and INCMGA00012

    Initial design (safety lead-in and expansion): One treatment cycle will consist of 28 days. Patients in both study phases will start palbociclib on Day 1 and INCMGA00012 on day 15 (+/- 7 days) of each cycle at the following dose schedule: INCMGA00012: 500 mg IV (flat dose) q28 days Palbociclib: 125 mg PO daily for 21 days, followed by 7 days off, q28 days Palbociclib will be taken on Day 1 of each cycle for 21 consecutive days followed by 7 days off (days 22-28 of each Cycle). INCMGA00012 will be administered on Day 15 of (+/- 7 days) each cycle and repeat every 28 days.(No longer using this) Amended design (Expansion only): One treatment cycle will consist of 28 days. Patients in both study phases will start palbociclib and INCMGA00012 on day 1 of each cycle: 500 mg IV (flat dose) of INCMGA00012 will be administered q28 days concurrently with palbociclib 125 mg PO daily for 21 days, followed by 7 days off, q28 days.

    Drug: INCMGA00012 · Drug: Palbociclib

Interventions

  • INCMGA00012: 500 mg IV (flat dose) q28 days (+/- 7 days in each cycle)

  • Palbociclib:125 mg PO daily for 21 days, followed by 7 days off, q28 days

06

What researchers measure

Primary outcomes

  1. confirm the recommended phase two dose (RP2D

    DLTs will be assess within the first 6 weeks of the treatment combination . DLT definitions are described in section 15.4, and will be defined using NCI CTCAE v 5.0. If ≤ 1 patient out of 6 has a dose-limiting toxicity, the dosing used in the safety lead-in phase will be declared the recommended phase 2 dose. If ≥ 2 of 6 patients in the safety lead-in experience a DLT, study treatment will be halted and no further patients will be enrolled. If the study is resumed with an alternative dosing schema, a new safety lead-in phase will be completed with the new dosing regimen

    Time frame: within 6 weeks of treatment

  2. best overall response rate (Phase II)

    defined by RECIST 1.1

    Time frame: by 48 weeks

Secondary outcomes

  1. Safety

    Safety will be assessed using CTCAE v 5.0 to define that adverse event profile of the treatment combination and safety events will be tabulated.

    Time frame: 2 years

  2. overall response rate

    as defined by irRECIST

    Time frame: 48 weeks

07

Study locations

7 sites
08

References and documents

Publications

  • Rosenbaum E, Seier K, Gularte-Merida R, Seffar E, Dickson MA, Avutu V, Banks LB, Chan JE, Chi P, Gounder MM, Kelly CM, Keohan ML, Maki RG, Movva S, Reed D, Desir R, Biniakewitz M, Cho JM, Duchemin M, Erinjeri JP, Lefkowitz RA, Koff A, Singer S, Tap W, Qin LX, D'Angelo S. Phase 2 study of palbociclib plus retifanlimab in patients with advanced dedifferentiated liposarcoma. J Immunother Cancer. 2026 May 4;14(5):e014346. doi: 10.1136/jitc-2025-014346. PubMed 42082272 ↗
  • Rosenbaum E, Gularte-Merida R, Seffar E, Lee J, Adamow M, Bradic M, Dickson MA, Avutu V, Banks LB, Chan JE, Chi P, Gounder MM, Kelly CM, Keohan ML, Maki RG, Movva S, Reed DR, Desir R, Biniakewitz M, Erinjeri JP, Lefkowitz RA, Wong P, Antonescu CR, Qin LX, Panageas KS, Shen R, Singer S, Koff A, Tap WD, D'Angelo SP. Tumor and Immune Dynamics Following Sequential CDK4/6 and PD-1 Inhibition: Results from a Phase 2 Study in Dedifferentiated Liposarcoma. Cancer Res Commun. 2026 Feb 1;6(2):437-446. doi: 10.1158/2767-9764.CRC-25-0334. PubMed 41325133 ↗

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

Individual participant data

Plan to share: Yes — Memorial Sloan Kettering Cancer Center supports the international committee of medical journal editors (ICMJE) and the ethical obligation of responsible sharing of data from clinical trials. The protocol summary, a statistical summary, and informed consent form will be made available on clinicaltrials.gov when required as a condition of Federal awards, other agreements supporting the research and/or as otherwise required. Requests for deidentified individual participant data can be made beginning 12 months after publication and for up to 36 months post publication. Deidentified individual participant data reported in the manuscript will be shared under the terms of a Data Use Agreement and may only be used for approved proposals. Requests may be made to: crdatashare@mskcc.org.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Sep 14, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04438824
Collaborators
Incyte Corporation
Responsible party
Sponsor
First posted
Jun 19, 2020
Start date
Jun 17, 2020
Primary completion
Jun 2027 (estimated)
Completion
Jun 2027 (estimated)
Last update
Sep 14, 2026

Study contacts

Sandra D'Angelo, MD
principal investigator · Memorial Sloan Kettering Cancer Center

Oversight

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

Not currently enrolling

This study is active, not recruiting, as verified in Sep 2026. 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: Retifanlimab

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