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Epithelial Ovarian CancerPhase 3MITO32NCT04421547

Efficacy of Letrozole in Recurrent Ovarian Cancer

A Phase 3 study testing Letrozole 2.5mg and Standard single agent chemotherapy in people with Epithelial Ovarian Cancer, run by Fondazione Policlinico Universitario Agostino Gemelli IRCCS at 1 site in Italy.

Terminated

Stopped early. The study ended before it was planned to and will not resume.

Official record
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Trial summary

Randomized phase III multicenter study investigating the role of letrozole in heavily pretreated recurrent ovarian cancer. Read more about this study

Who is it for?
Ages 18 years and older, women only
Conditions the study is for
Epithelial Ovarian Cancer
What is being tested?
Letrozole 2.5mg and Standard single agent chemotherapy
Could I receive a placebo?
No, everyone receives an active treatment
How many people
86 participants
Where
1 siteItaly
Study dates
22 Jun 2020to 4 Nov 2024
Phase
Phase 3
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • Women only
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Female of 18 years of age or older
  • Histologically or cytologically documented invasive epithelial ovarian cancer, primary peritoneal carcinoma, or fallopian tube cancer
  • Platinum resistant or refractory disease (patients who did not respond to last platinumbased therapy or with last relapse occurred < 6 months from the last dose of platinum) or patients not amenable of platinum treatment
  • >3 previous chemotherapy lines
  • ECOG performance status 0 -2
  • Measurable and evaluable disease according to RECIST criteria confirmed by radiological imaging: at least one lesion of ≥ 1.0 cm for non-lymph nodes or ≥ 1.5 cm in short-axis diameter for lymph nodes at CT scan (Subjects with isolated rising CA-125 without radiologically visible disease are excluded)
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  • Left Ventricular Ejection Fraction (LVEF) ≥ institutional lower limit normal
  • Estimated life expectancy ≥ 16 weeks
  • Adequate functions evidenced by:
  • Hemoglobin ³10.0 g/dl
  • Absolute neutrophil count ³1.5 x 109/L
  • White blood cells >3x109/L
  • Platelet >100 x109/L
  • AST and ALT £ 2.5 x Upper limit of normal, unless liver metastasis, in which case AST and ALT < or = 5 x Upper limit of normal will be accepted
  • Bilirubin ≤ 1.5 times the upper limit of normal (ULN)
  • Estimated glomerular filtration ³ 60mL/min using the Cockcroft-Gault equation.
  • Patient able to comply with the treatment
  • Evidence of not pregnancy status as documented by a negative beta-human chorionic gonadotropin (ß-hCG) test
  • Not breastfeeding women
  • Patients with child-bearing potential using (or willing to use) effective contraception during treatment and 3 months ahead unless they are postmenopausal (at least 12 months consecutive amenorrhea, in the appropriate age group and without other known or suspected cause), or have been sterilized surgically.
  • Comprehension and signature of the informed consent

Who cannot join

  • Subjects with borderline ovarian cancer
  • Subject with low malignant potential tumors
  • Less than 3 lines of previous therapies
  • Platinum sensitive disease (last relapse occurred > 6 months from the last dose of platinum)
  • Less than 4 weeks from last dose of therapy with any investigational agent, or chemotherapy
  • History of another neoplastic disease (except basal cell carcinoma or cervical carcinoma in situ adequately treated) unless in remission for 3 years or longer
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  • Breastfeeding women
  • Pregnant women
  • Prior therapy with letrozole.
  • Severe osteoporosis documented by BMD (Bone Mineral Density) T-score ≤ -2.5 with existing fragility fracture(s)
  • Patients with a known hypersensitivity to Paclitaxel , PLD, Topotecan, Gemcitabine or Letrozole or any case of severe toxicity related to them. Also Patients with a known hypersensitivity to any of the ingredients or excipients of the IMPs (e.g. macrogolglycerol ricinoleate (polyoxyl castor oil), ethanol, anhydrous, citric acid, anhydrous, sodium chloride hydrochloric acid, mannitol, sodium acetate, sodium hydroxide, tartaric acid, lactose monohydrate, maize starch, hypromellose Type 2910, cellulose microcrystalline, sodium starch glycolate type A, colloidal anhydrous silica, magnesium stearate, hypromellose 6 cp E464, titanium dioxide E171, Iron oxide yellow E172, Macrogol 400, talc E553b)
  • Prior resistance to Paclitaxel, PLD, Topotecan, Gemcitabine
  • Patients with active hepatic disease (HCV or HBV infections), hepatic severe impairment or cirrhosis
  • Bowel obstruction, sub-occlusive disease, prior gastrectomy, symptomatic brain metastases.
  • Myocardial infarct within six months before enrolment , NYHA Class II or worse heart failure, unstable angina, serious cardiac arrhythmia or cardiac arrhythmia requiring treatment.
  • Any serious concomitant illness requiring treatment
  • Pre-existing peripheral neuropathy > CTCAE Grade 2.
  • Concomitant use of strong CYP3A4 inhibitors (e.g. ketoconazole, itraconazole, voriconazole, ritonavir, clarithromycin, and telithromycin) or strong CYP2A6 inhibitors (e.g. methoxsalen) because they may increase exposure to letrozole.
  • Concomitant use of inducers of CYP3A4 (e.g. phenytoin, rifampicin, carbamazepine, phenobarbital, and St. John's Wort) which may reduce exposure to letrozole.
  • Concomitant use of medicinal products with a narrow therapeutic index that are substrates for CYP2C19 (e.g. phenytoin, clopidrogel) that may have their systemic serum concentrations altered by letrozole.

Trial locations and contacts

1 site in 1 country.

Italy1 site
  • DH Tumori Femminili

    Roma

Other trials in Italy

About this study

Official title: Phase III Randomized Control Case Study of Letrozole in Women With Heavily Pretreated Ovarian Cancer (MITO32)

Randomized phase III multicenter study investigating the role of letrozole in heavily pretreated recurrent ovarian cancer.

Read the detailed description

This is a randomized, open-label, phase III, multicenter, global study evaluating the efficacy and safety of Letrozole in heavily pretreated recurrent ovarian cancer patients in comparison to physician' choice chemotherapy.

Subjects who meet all the inclusion criteria and none of the exclusion criteria will be randomized in a 1:1 ratio to one of the two arms, as follow:

Arm A: Letrozole 1 tablet (2,5 mg) orally once a day in 28-day cycles Arm B: Pegylated Liposomal Doxorubicin 40 mg/m2 d1q28 or Topotecan 4 mg/m2 d1,8,15q28 or Gemcitabine 1000 mg/m2 d1,8,15q28 or Paclitaxel 80 mg/m2 d1,8,15q28 In case of objective response and acceptable toxicity, no maximum number of cycles of treatment is defined.

The aim of the study is to assess the activity of Letrozole in women with recurrent epithelial ovarian cancer, heavily pretreated.

Being tested
Letrozole 2.5mg, Standard single agent chemotherapy
Keywords
epithelial ovarian cancer, Letrozole
Medical subject headings
Carcinoma, Ovarian Epithelial

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Letrozole 2.5mgDrug

    This study will investigate the role of Letrozole in patients affected by heavily pretreated platinum resistant ovarian cancer, compared to standard treatment.

  • Standard single agent chemotherapyDrug

    Either Paclitaxel 80 mg/m2 as a 1-h infusion, on days 1,8,15,22 every 28 days or Pegylated Liposomal Doxorubicin (PLD) 40 mg/m2 given every 4 weeks or Topotecan 4mg/m2 IV on days 1,8,15 every 4 weeks or Gemcitabine 1000 mg/m2 IV over 30 min on days 1,8,15 every 28 days.

Study groups in NCT04421547
Study groupRoleWhat they receive
LetrozoleExperimentalLetrozole 1 tablet (2,5 mg) orally once a day
Receives: Drug: Letrozole 2.5mg
Standard ChemotherapyActive comparatorEither Paclitaxel 80 mg/m2 as a 1-h infusion, on days 1,8,15,22 every 28 days or Pegylated Liposomal Doxorubicin (PLD) 40 mg/m2 given every 4 weeks or Topotecan 4mg/m2 IV on days 1,8,15 every 4 weeks or Gemcitabine 1000 mg/m2 IV over 30 min on days 1,8,15 every 28 days.
Receives: Drug: Standard single agent chemotherapy

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Proportion of patient alive at 12 months

    Evaluate the difference in terms of proportion of survivals at 12 months between the two arms.

    Measured: 30 months

Secondary outcomes (7)
  1. PFS

    Progression Free Survival

    Measured: 30 months

  2. OS

    Overall Survival

    Measured: 30 months

  3. ORR

    Objective Response Rate (according to RECIST criteria version 1.1)

    Measured: 30 months

  4. TPST

    Time from randomization to the start of the primary subsequent therapy

    Measured: 30 months

  5. TSST

    Time from randomization to the start of the secondary subsequent therapy

    Measured: 30 months

  6. Toxicity profile evaluated according to NCI-CTCAE version 5.0

    Toxicity profile (evaluated according to NCI-CTCAE version 5.0)

    Measured: 30 months

  7. QoL

    Quality of Life (evaluated by EORTC QLQ-C30/ QLQ-OV28 questionnaire)

    Measured: 30 months

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted9 Jun 2020
  2. Study start22 Jun 2020
  3. Primary completion1 Nov 2024
  4. Study completion4 Nov 2024

Why it stopped: Logistical problems impacting the speed of enrolment

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Model description
This is a two arms, prospective, open-label multi center randomized phase III study.
Masking
None (open label)
Enrolment
86 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT04421547
Sponsor's protocol ID
MITO32
Acronym
MITO32
Status last verified
Mar 2025
First submitted
15 May 2020
Last updated
7 Mar 2025
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
Yes

Publications

  • Banerjee S, Kaye SB, Ashworth A. Making the best of PARP inhibitors in ovarian cancer. Nat Rev Clin Oncol. 2010 Sep;7(9):508-19. doi: 10.1038/nrclinonc.2010.116. Epub 2010 Aug 10.

    PubMed 20700108
  • Banerjee S, Kaye SB. New strategies in the treatment of ovarian cancer: current clinical perspectives and future potential. Clin Cancer Res. 2013 Mar 1;19(5):961-8. doi: 10.1158/1078-0432.CCR-12-2243. Epub 2013 Jan 10.

    PubMed 23307860
  • Gore ME, Fryatt I, Wiltshaw E, Dawson T. Treatment of relapsed carcinoma of the ovary with cisplatin or carboplatin following initial treatment with these compounds. Gynecol Oncol. 1990 Feb;36(2):207-11. doi: 10.1016/0090-8258(90)90174-j.

    PubMed 2404837
  • Markman M, Rothman R, Hakes T, Reichman B, Hoskins W, Rubin S, Jones W, Almadrones L, Lewis JL Jr. Second-line platinum therapy in patients with ovarian cancer previously treated with cisplatin. J Clin Oncol. 1991 Mar;9(3):389-93. doi: 10.1200/JCO.1991.9.3.389.

    PubMed 1999708
  • Buda A, Floriani I, Rossi R, Colombo N, Torri V, Conte PF, Fossati R, Ravaioli A, Mangioni C. Randomised controlled trial comparing single agent paclitaxel vs epidoxorubicin plus paclitaxel in patients with advanced ovarian cancer in early progression after platinum-based chemotherapy: an Italian Collaborative Study from the Mario Negri Institute, Milan, G.O.N.O. (Gruppo Oncologico Nord Ovest) group and I.O.R. (Istituto Oncologico Romagnolo) group. Br J Cancer. 2004 Jun 1;90(11):2112-7. doi: 10.1038/sj.bjc.6601787.

    PubMed 15150623
  • Sehouli J, Stengel D, Oskay-Oezcelik G, Zeimet AG, Sommer H, Klare P, Stauch M, Paulenz A, Camara O, Keil E, Lichtenegger W. Nonplatinum topotecan combinations versus topotecan alone for recurrent ovarian cancer: results of a phase III study of the North-Eastern German Society of Gynecological Oncology Ovarian Cancer Study Group. J Clin Oncol. 2008 Jul 1;26(19):3176-82. doi: 10.1200/JCO.2007.15.1258.

    PubMed 18591555
  • ten Bokkel Huinink W, Gore M, Carmichael J, Gordon A, Malfetano J, Hudson I, Broom C, Scarabelli C, Davidson N, Spanczynski M, Bolis G, Malmstrom H, Coleman R, Fields SC, Heron JF. Topotecan versus paclitaxel for the treatment of recurrent epithelial ovarian cancer. J Clin Oncol. 1997 Jun;15(6):2183-93. doi: 10.1200/JCO.1997.15.6.2183.

    PubMed 9196130
  • Gordon AN, Fleagle JT, Guthrie D, Parkin DE, Gore ME, Lacave AJ. Recurrent epithelial ovarian carcinoma: a randomized phase III study of pegylated liposomal doxorubicin versus topotecan. J Clin Oncol. 2001 Jul 15;19(14):3312-22. doi: 10.1200/JCO.2001.19.14.3312.

    PubMed 11454878
  • Mutch DG, Orlando M, Goss T, Teneriello MG, Gordon AN, McMeekin SD, Wang Y, Scribner DR Jr, Marciniack M, Naumann RW, Secord AA. Randomized phase III trial of gemcitabine compared with pegylated liposomal doxorubicin in patients with platinum-resistant ovarian cancer. J Clin Oncol. 2007 Jul 1;25(19):2811-8. doi: 10.1200/JCO.2006.09.6735.

    PubMed 17602086
  • Vergote I, Finkler NJ, Hall JB, Melnyk O, Edwards RP, Jones M, Keck JG, Meng L, Brown GL, Rankin EM, Burke JJ, Boccia RV, Runowicz CD, Rose PG. Randomized phase III study of canfosfamide in combination with pegylated liposomal doxorubicin compared with pegylated liposomal doxorubicin alone in platinum-resistant ovarian cancer. Int J Gynecol Cancer. 2010 Jul;20(5):772-80. doi: 10.1111/igc.0b013e3181daaf59.

    PubMed 20973267
  • Pujade-Lauraine E, Hilpert F, Weber B, Reuss A, Poveda A, Kristensen G, Sorio R, Vergote I, Witteveen P, Bamias A, Pereira D, Wimberger P, Oaknin A, Mirza MR, Follana P, Bollag D, Ray-Coquard I. Bevacizumab combined with chemotherapy for platinum-resistant recurrent ovarian cancer: The AURELIA open-label randomized phase III trial. J Clin Oncol. 2014 May 1;32(13):1302-8. doi: 10.1200/JCO.2013.51.4489. Epub 2014 Mar 17.

    PubMed 24637997
  • Lakusta CM, Atkinson MJ, Robinson JW, Nation J, Taenzer PA, Campo MG. Quality of life in ovarian cancer patients receiving chemotherapy. Gynecol Oncol. 2001 Jun;81(3):490-5. doi: 10.1006/gyno.2001.6199.

    PubMed 11371144
  • Demers LM, Melby JC, Wilson TE, Lipton A, Harvey HA, Santen RJ. The effects of CGS 16949A, an aromatase inhibitor on adrenal mineralocorticoid biosynthesis. J Clin Endocrinol Metab. 1990 Apr;70(4):1162-6.

    PubMed 2156889
  • Lipton A, Demers LM, Harvey HA, Kambic KB, Grossberg H, Brady C, Adlercruetz H, Trunet PF, Santen RJ. Letrozole (CGS 20267). A phase I study of a new potent oral aromatase inhibitor of breast cancer. Cancer. 1995 Apr 15;75(8):2132-8. doi: 10.1002/1097-0142(19950415)75:83.0.co;2-u.

    PubMed 7697604
  • El Ouagari K, Karnon J, Delea T, Talbot W, Brandman J. Cost-effectiveness of letrozole in the extended adjuvant treatment of women with early breast cancer. Breast Cancer Res Treat. 2007 Jan;101(1):37-49. doi: 10.1007/s10549-006-9262-4. Epub 2006 Jul 4.

    PubMed 16821085

Questions about this trial

What is this clinical trial studying?

A Phase 3 study testing Letrozole 2.5mg and Standard single agent chemotherapy in people with Epithelial Ovarian Cancer, run by Fondazione Policlinico Universitario Agostino Gemelli IRCCS at 1 site in Italy.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 21 inclusion and 20 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: stopped early, as of the sponsor's last update on 7 Mar 2025. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Italy. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

The study was stopped early (reason given: Logistical problems impacting the speed of enrolment). Results are not available in the source record.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Proportion of patient alive at 12 months (time frame: 30 months). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT04421547, which also lists 33 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 7 Mar 2025.

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