ClinicalTrials.gg
CompletedNCT03397173Updated Aug 11, 2021

TET2 Mutations in Myelodysplastic Syndromes and Acute Myeloid Leukemia With Azacitidine + Ascorbic Acid

A Phase 2 interventional study of Azacitidine and Ascorbic acid in Myelodysplastic Syndromes, Myeloproliferative Neoplasm and Acute Myeloid Leukemia, sponsored by Case Comprehensive Cancer Center. Completed at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2021-08-11.

Sponsored by Case Comprehensive Cancer Center · Phase 2, Interventional, and Treatment

From the registry’s dates

  • Primary completion was Jan 2021, 5 years 10 months ago, and no results have been posted to the registry.
Phase
Phase 2
Study type
Interventional
Enrollment
12
Allocation
Not applicable
Ages
18 Years and older
Sex
All
01

Where this study stands

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

Among 130 studies testing azacitidine in Myelodysplastic Syndromes — 13 open to participants now, 25 under way, 3 of them phase 3. Azacitidine · Myelodysplastic Syndromes.

Enrollment
102nd of 126
12 · median 38
Started
2018
with 4 others
Phase 2
63 of 130
5 open now
Registered
95th of 130
by date

Among the 130 studies testing azacitidine in Myelodysplastic Syndromes, this one is the 102nd largest by enrollment of the 126 interventional ones that give a count, is one of 5 that started in 2018, is one of 63 in phase 2, and was the 95th registered.

Myelodysplastic Syndromes

1,997 studies on the registry are indexed under Myelodysplastic Syndromes; 324 are open to participants now.

Browse Myelodysplastic Syndromes studies →

Open to participants now

13 of the 130 studies testing azacitidine in Myelodysplastic Syndromes are open now, in 12 countries. Recruiting first, the newest first:

8 more — sign in →

By country, each count listing its studies:

All 13 open studies →

About azacitidine

Azacitidine: first FDA approval 2004 (VIDAZA), first EMA approval 2008. What it is approved for, and how studies give it, is on its page →

Who these studies take

Of the 262 Myelodysplastic Syndromes studies recruiting now, 165 (63%) set no upper age limit and 70 (27%) stop at 75 or younger; 57 take children under 18; 17 take healthy volunteers.

This study: 18 Years and older · all sexes · no healthy volunteers.

The full table on the hub →

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Watch this landscapeDownload CSVNarrow it in search →With an account: a weekly mail of what changed among 130 studies testing azacitidine in Myelodysplastic Syndromes, or all of them as a file.
02

Study summary

The purpose of this study is to evaluate the efficacy of treatment with azacitidine (an FDA approved drug for the treatment of MDS) and high dose ascorbic acid in patients with TET2 mutations. This approach is intended to enhance the enzymatic activity of TET2 protein, which in term may help to improve counts and symptoms, related to Myelodysplastic Syndromes and Acute Myeloid Leukemia. This combination is specific to individuals who carry this mutation.

Read the detailed description

Primary Endpoint To estimate the overall response rate (ORR) of the combination of standard dose azacitidine and oral dose of ascorbic acid in patients with MDS, AML, and MDS / Myeloproliferative Neoplasm (MPN) overlap with heterozygous TET2 mutations

Secondary Endpoints

  1. The safety profile of the combination in the targeted patient population
  2. Response duration
  3. Overall survival of the treated population (compared to matched historical cohort of patients treated with single agent Azacitidine)
  4. The identification of biomarkers that predict response to the combination

Study Design This is an open-label, phase II study that will be conducted at Cleveland Clinic, Taussig Cancer Institute.

Azacitidine will be administered intravenously or subcutaneously at a fixed dose of 75mg/m2/day for 7 consecutive days, (allowing for weekends, and holidays) of each 28-day cycle. Ascorbic acid will be administered orally daily at 1 g/day three days prior to start azacitidine and then continues daily for a total of 28 days of each 28 day cycle.

03

Conditions studied

  • Myelodysplastic Syndromes
  • Myeloproliferative Neoplasm
  • Acute Myeloid Leukemia

Keywords

  • Azacitidine
  • Ascorbic Acid
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

  • Patients must have a confirmed heterozygous TET2 mutations identified by next generation targeted deep sequencing.
  • Patients must have MDS, or MDS/MPN overlap defined by 2016 World Health Organization (WHO) criteria. Both newly diagnosed or previously treated MDS or MDS/MPN patients are eligible as long as the patient has never received prior treatment with azacitidine or decitabine.
  • Patients with Leukemic/blast phase transformation MPN.
  • Patient with AML according to 2016 WHO criteria.

    • Newly diagnosed patients who are ineligible or declined to receive intensive chemotherapy after discussion of risks and benefits of that approach or patients with primary /relapsed AML.
    • Patients with active central nervous system (CNS) leukemia eligible at the discretion of treating physician.
    • Relapse/Refractory is defined as at least 1 course of treatment for AML excluding any patients treated with azacitidine or decitabine.

      • Patients should be off any prior treatment or for 2 weeks prior to start study with the exception of hydrea (Hydroxyurea).
  • Prior therapy with hydroxyurea, biological or targeted therapy (e.g. flt3 inhibitors, other kinase inhibitors) or hematopoietic growth factors is allowed.
  • (ECOG) performance status ≤ 3.
  • Patients must have normal organ and marrow function as defined at the discretion of the treating physician and PI.
  • Women of must have a negative serum or urine pregnancy test within 10-14 days prior to enrollment.
  • Patients must have the ability to understand and the willingness to sign a written document.
  • Patient must be willing to comply with all aspects of the protocol including completing the drug diary.
  • Patient must discontinue any and all use of multivitamin and/or vitamin c medication 24 hours before first dose of Ascorbic Acid.

Exclusion criteria

Exclusion Criteria:

  • Any prior treatment with azacitidine or decitabine.
  • Patients diagnosed with acute promyelocytic leukemia (APL), AML-M3.
  • Patients receiving other active treatment for their myeloid including agents with the exception of hydrea for white blood cell control.
  • Nursing or pregnant women.
  • History of allergic reactions to either azacitidine or ascorbic acid.
  • Patients with uncontrolled intercurrent illness including, but not limited to ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, or psychiatric illness/social situations that would limit compliance with study requirements.
  • Patients with higher risk of bleeding (deemed by the treating physician) or on anticoagulation.
  • Patients who are unwilling or unable to comply with all study requirements.
Terms in these criteria, in plain language(7)

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.

Line of therapy

A line of therapy is one course of treatment, which may combine several drugs. First-line is the first course given; second-line follows when that stops working or is not tolerated.

“Two prior lines” means two courses that count separately under the study’s rules — not simply two drugs. Ask the study team if you are unsure how yours are counted.

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.

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.

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.

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.

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
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
12 participants (actual)

Study arms

  • Experimental
    Azacitidine + Ascorbic acid

    Azacitidine will be administered intravenously or subcutaneously at a fixed dose of 75mg/m2/day for 7 consecutive days, (allowing for weekends, and holidays) of each 28-day cycle. Ascorbic acid will be administered orally daily at 1 g/day three days prior to start azacitidine and then continues daily for a total of 28 days of each 28 day cycle.

    Drug: Azacitidine · Drug: Ascorbic acid

Interventions

  • Azacitidine will be administered intravenously or subcutaneously at a fixed dose of 75mg/m2/day for 7 consecutive days, allowing interruptions for weekends and holidays within each 28-day cycle. No dose modifications will be permitted during the treatment period.

  • Ascorbic acid will be administered orally daily at 1 g/day three days prior to start azacitidine and then continues daily for a total of 28 days of each 28 day cycle. No dose modifications will be permitted during the treatment period.

06

What researchers measure

Primary outcomes

  1. Number of patients with response per MDS International Working Group 2006 Criteria

    A binary indicator of overall response, defined as achieving CR, PR, or HI) per 2006 International Working Group (IWG) criteria Responses for MDS patients: Complete Response (CR): Bone marrow: ≤ 5% myeloblasts with normal maturation. Peripheral blood: Hgb ≥ 11 g/dL Platelets ≥ 100 × 109/L Neutrophils ≥ 1.0 × 109/L, Blasts 0% Partial response (PR): All CR criteria if abnormal before treatment except: bone marrow blasts decreased by ≥ 50% over pretreatment but still \> 5% Hematologic Improvement (HI): (responses must last at least 8 weeks) Erythroid response \[HI-E; (if pretreatment Hgb \< 11 g/dL)\]; Hgb increase by ≥ 1.5 g/dL; Relevant reduction of units of red blood cell (RBC) transfusions by an absolute number of at least 4 RBC transfusions/8 weeks compared with the pretreatment transfusion number in the previous 8 weeks. Only RBC transfusions given for an Hgb of ≤ 9.0 g/dL pretreatment will count in the RBC transfusion response evaluation.

    Time frame: 171 Days (6 cycles of 28 days plus 3 day loading period)

  2. Number of AML patients with response

    Complete Response (CR): Bone marrow: ≤ 5% myeloblasts with normal maturation of all cell lines, Absolute neutrophil count (ANC) \>/= 1.0 X 109/L, platelet count \>/= 100 X 109/L, no detectable Auer rods and no extramedulary leukemia. Complete Response (CR) with incomplete hematologic recovery (CRi): Responses as in CR but ANC \< 1.0 X 109/L. Complete Response (CR) with incomplete platelets recovery (CRp): Responses as in CR but platelets \< 100 X 109/L. Partial response (PR): All CR criteria if abnormal before treatment except: bone marrow blasts decreased by ≥ 50% over pretreatment but still \> 5%.

    Time frame: 171 Days (6 cycles of 28 days plus 3 day loading period)

Secondary outcomes

  1. Incidence of adverse events

    Incidence of adverse events of the combination defined by CTCAE 4.1 criteria. Toxicity will be any drug related Grade 3 or 4 toxicity.

    Time frame: 171 Days (6 cycles of 28 days plus 3 day loading period)

  2. Response duration

    Response duration to the combination recorded from start of treatment to progression

    Time frame: 171 Days (6 cycles of 28 days plus 3 day loading period)

  3. Overall survival

    Overall survival measured from start of treatment to death or last follow up

    Time frame: Up to 1 year from end of treatment

07

Study locations

1 site
  • Cleveland Clinic, Case Comprehensive Cancer Center
    Cleveland, Ohio 44195, United States
08

References and documents

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

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 Mar 2018 to primary completion in Jan 2021, 33 months.

Of 227 non-industry phase 2 interventional studies under Myelodysplastic Syndromes, half reached primary completion within 76 months of starting (the median), counting those still running; a quarter within 44 and three quarters within 116. This study's 33 months is below that.

Counting every sponsor, half of 279 studies reached it within 66 months; a quarter within 40 and three quarters within 104.

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

Registered
Jan 5, 2018
First posted
Jan 11, 2018
StartActual
Mar 16, 2018
Primary completionActual
Jan 3, 2021
CompletionActual
Jan 21, 2021
Last update
Aug 11, 2021
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 11, 2021, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03397173
Responsible party
Sponsor
First posted
Jan 11, 2018
Start date
Mar 16, 2018
Primary completion
Jan 3, 2021
Completion
Jan 21, 2021
Last update
Aug 11, 2021

Study contacts

Aziz Nazha, MD
principal investigator · Cleveland Clinic, Case Comprehensive Cancer Center

Oversight

Data monitoring committee
Yes
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 Aug 2021. You cannot join it, but the record below documents what was studied.

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Discussion

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Studies of the drugs tested here: Azacitidine · Ascorbic Acid

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