Therapy Detail
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| Therapy Name | Letrozole |
| Synonyms | |
| Therapy Description |
Femara (letrozole) is an aromatase inhibitor, which inhibits estrogen synthesis, and is approved for postmenopausal women with hormone receptor positive breast cancer (FDA.gov). |
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| Drug Name | Trade Name | Synonyms | Drug Classes | Drug Description |
|---|---|---|---|---|
| Letrozole | Femara | Letrozol | Aromatase Inhibitor 3 | Femara (letrozole) is an aromatase inhibitor, which inhibits estrogen synthesis, and is approved for postmenopausal women with hormone receptor positive breast cancer (FDA.gov). |
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| Molecular Profile | Indication/Tumor Type | Response Type | Therapy Name | Approval Status | Evidence Type | Efficacy Evidence | References |
|---|---|---|---|---|---|---|---|
| PIK3CA mutant | estrogen-receptor positive breast cancer | predicted - sensitive | Letrozole | Phase III | Actionable | In a Phase III trial, estrogen-receptor positive breast cancer patients harboring a PIK3CA mutation demonstrated a greater benefit when treated with Femara (letrozole) compared to Nolvadex (tamoxifen) (PMID: 29902286; NCT00004205). | 29902286 |
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| Clinical Trial | Phase | Therapies | Title | Recruitment Status | Covered Countries | Other Countries |
|---|---|---|---|---|---|---|
| NCT06223698 | Phase III | Letrozole Anastrozole Exemestane Tamoxifen | Optimizing Extended Adjuvant Endocrine Therapy in Patients With Breast Cancer (SWE-Switch) | Not yet recruiting | SWE | 0 |
| NCT04111978 | Phase III | Letrozole | MAintenance Therapy With Aromatase Inhibitor in Epithelial Ovarian Cancer (MATAO) (MATAO) | Recruiting | DEU | CHE | AUT | 0 |
| NCT02269670 | Phase II | Tamoxifen Everolimus Megestrol acetate Letrozole Fulvestrant Anastrozole | Phase II Study of Everolimus Beyond Progression | Terminated | USA | 0 |
| NCT03458221 | Phase II | Itraconazole Everolimus Letrozole Bicalutamide | Signal TrAnsduction Pathway Activity Analysis in OVarian cancER (STAPOVER) | Recruiting | NLD | 0 |
| NCT05649956 | Phase II | Letrozole | Letrozole in Uterine Leiomyosarcoma | Recruiting | USA | 0 |
| NCT04129216 | Phase II | Letrozole Tamoxifen Exemestane | The Effects of Short-term Preoperative Treatment With Hormonal Therapy on Gene Profiles in Breast Cancer | Completed | USA | 0 |
| NCT04886531 | Phase II | Anastrozole + Neratinib + Trastuzumab Letrozole + Neratinib + Trastuzumab Neratinib Anastrozole + Neratinib Letrozole + Neratinib Letrozole Anastrozole Anastrozole + Trastuzumab | Trial of Pre-operative Neratinib and Endocrine Therapy With Trastuzumab in ER-Positive, HER-2 Positive Breast Cancers | Recruiting | USA | 0 |
| NCT02684032 | Phase I | Letrozole Fulvestrant Gedatolisib + Palbociclib | A Study To Assess The Tolerability And Clinical Activity Of Gedatolisib In Combination With Palbociclib/Letrozole Or Palbociclib/Fulvestrant In Women With Metastatic Breast Cancer | Completed | USA | 0 |
| NCT03906669 | Phase II | Letrozole Tamoxifen | A Window of Opportunity Study of Pre-operative Endocrine Therapy With and Without Prometrium in Postmenopausal Women With Early Stage Breast Hormone Receptor Positive (HR+) Human Epidermal Receptor 2 Negative (HER2-) Breast Cancer. (WinPro) | Recruiting | AUS | 0 |
| NCT05150652 | Phase II | Exemestane Tamoxifen Letrozole Anastrozole | Neoadjuvant Endocrine Therapy in ER-positive, HER2-negative Early Stage Breast Cancer | Recruiting | USA | 0 |
| NCT00461773 | Phase II | Letrozole Bevacizumab | Randomized Phase II Study of Preoperative Letrozole (Femara) in Combination With Avastin in Hormone Receptor Positive Breast Cancer | Terminated | USA | 0 |
| NCT06348134 | Phase II | Tamoxifen Ado-trastuzumab emtansine + Docetaxel + Pertuzumab Letrozole Ado-trastuzumab emtansine Goserelin | Assessing the Efficacy and Safety of Anti-HER2 Therapy in Nigerian Women With HER2+ Breast Cancer Before and After Surgery | Not yet recruiting | USA | 0 |
| NCT02450175 | Phase I | Letrozole Everolimus | Etiology of the Platelet-Cancer Metastatic Pathway - A Study of Inflammatory Markers, Platelet Characteristics and Metastatic Surrogates in Cancer Patients and Controls | Unknown status | USA | 0 |
| NCT05514054 | Phase III | Letrozole Anastrozole Exemestane Tamoxifen LY3484356 | A Study of Imlunestrant Versus Standard Endocrine Therapy in Participants With Early Breast Cancer (EMBER-4) | Recruiting | USA | TUR | SVK | ROU | POL | NLD | ITA | ISR | IRL | HUN | GRC | GBR | FRA | FIN | ESP | DEU | CZE | CAN | BRA | BEL | AUT | AUS | ARG | 9 |
| NCT02115048 | Phase II | Afatinib Letrozole | Clinical Study for the Treatment of Breast Cancer the Patient Will Receive Afatinib Plus Letrozole or Letrozole Alone | Terminated | USA | ROU | ESP | 1 |
| NCT03306472 | Phase II | Letrozole + Megestrol acetate Letrozole | A Pre-operative Window Study of Letrozole Plus PR Agonist (Megestrol Acetate) Versus Letrozole Alone in Post-menopausal Patients With ER-positive Breast Cancer (PIONEER) | Completed | GBR | 0 |
| NCT01272037 | Phase III | Anastrozole Letrozole Tamoxifen Exemestane | Tamoxifen Citrate, Letrozole, Anastrozole, or Exemestane With or Without Chemotherapy in Treating Patients With Invasive RxPONDER Breast Cancer | Active, not recruiting | USA | IRL | FRA | ESP | CAN | 5 |
| NCT05238831 | Phase II | Vemurafenib Vinorelbine Palbociclib Irinotecan Alpelisib Capecitabine Atezolizumab Paclitaxel Entrectinib Cobimetinib Nab-paclitaxel Fulvestrant Carboplatin Olaparib Pertuzumab/trastuzumab/hyaluronidase-zzxf Niraparib Vismodegib Alectinib Letrozole Ado-trastuzumab emtansine Bevacizumab Eribulin Anastrozole | SMMART Adaptive Clinical Treatment (ACT) Trial | Withdrawn | 0 | |
| NCT01674140 | Phase III | Goserelin Anastrozole Letrozole Leuprolide Everolimus Tamoxifen Exemestane | S1207 Hormone Therapy With or Without Everolimus in Treating Patients With Breast Cancer (e3) | Active, not recruiting | USA | 1 |
| NCT02947685 | Phase III | Fulvestrant Pertuzumab Letrozole Anastrozole Exemestane Palbociclib Trastuzumab | Randomized, Open Label, Clinical Study of the Targeted Therapy, Palbociclib, to Treat Metastatic Breast Cancer (PATINA) | Active, not recruiting | USA | NZL | ITA | FRA | ESP | DEU | AUS | 1 |
| NCT02040857 | Phase II | Exemestane Palbociclib Tamoxifen Letrozole Anastrozole | A Study of Palbociclib in Combination With Adjuvant Endocrine Therapy for Hormone Receptor Positive, HER2 Negative Invasive Breast Cancer | Completed | USA | 0 |
| NCT04095364 | Phase III | Carboplatin + Letrozole + Paclitaxel Letrozole | Letrozole With or Without Paclitaxel and Carboplatin in Treating Patients With Stage II-IV Ovarian or Primary Peritoneal Cancer | Recruiting | USA | IRL | CAN | 2 |
| NCT05952557 | Phase III | Tamoxifen Abemaciclib + Tamoxifen Abemaciclib + Exemestane Abemaciclib + Camizestrant Abemaciclib + Letrozole Abemaciclib + Anastrozole Exemestane Anastrozole Letrozole | An Adjuvant Endocrine-based Therapy Study of Camizestrant (AZD9833) in ER+/HER2- Early Breast Cancer (CAMBRIA-2) (CAMBRIA-2) | Recruiting | USA | TUR | ROU | POL | NZL | ITA | ISR | IRL | HUN | HRV | GRC | GBR | FRA | EST | ESP | DEU | CZE | CHE | CAN | BRA | BGR | BEL | AUT | AUS | ARG | 19 |
| NCT01923168 | Phase II | Buparlisib + Letrozole Letrozole Alpelisib + Letrozole | Study of Letrozole With or Without BYL719 or Buparlisib, for the Neoadjuvant Treatment of Postmenopausal Women | Completed | USA | NLD | LBN | ITA | ISR | ESP | DEU | CZE | CAN | BRA | BGR | BEL | AUT | AUS | 3 |
| NCT01958021 | Phase III | Letrozole + Ribociclib Letrozole | Study of Efficacy and Safety of LEE011 in Postmenopausal Women With Advanced Breast Cancer.(MONALEESA-2) | Completed | USA | TUR | SWE | NOR | NLD | LBN | ITA | ISR | IRL | HUN | GBR | FRA | FIN | ESP | DNK | DEU | CZE | CAN | BRA | BEL | AUT | AUS | ARG | 6 |
| NCT06380751 | Phase III | Ribociclib Fulvestrant Camizestrant + Saruparib Anastrozole Camizestrant + Ribociclib Letrozole Camizestrant + Palbociclib Abemaciclib + Camizestrant Exemestane Abemaciclib Palbociclib | Saruparib (AZD5305) Plus Camizestrant Compared With CDK4/6 Inhibitor Plus Endocrine Therapy or Plus Camizestrant in HR-Positive, HER2-Negative (IHC 0, 1+, 2+/ ISH Non-amplified), BRCA1, BRCA2, or PALB2m Advanced Breast Cancer (EvoPAR-BR01) | Recruiting | USA | TUR | POL | ITA | ISR | HUN | GBR | FRA | ESP | DEU | CZE | CAN | BRA | BGR | AUT | AUS | ARG | 11 |
| NCT04272801 | Phase II | Anastrozole Letrozole Tamoxifen Exemestane | Pre-Operative Window of Adjuvant Endocrine Therapy to Inform RT Decisions in Older Women With Early-Stage Breast Cancer (POWER) | Active, not recruiting | USA | 0 |
| NCT03820830 | Phase III | Anastrozole Exemestane Anastrozole + Palbociclib Letrozole Letrozole + Palbociclib Exemestane + Palbociclib | Palbociclib for HR Positive / HER2-negative Isolated Locoregional Recurrence of Breast Cancer (POLAR) | Recruiting | ITA | HUN | FRA | ESP | CHE | AUT | 0 |
| NCT06001762 | Phase II | Tamoxifen Exemestane Abemaciclib Anastrozole Letrozole | TRADE: Dose Escalation Tolerability of Abemaciclib in HR+ HER2- Early Stage Breast Cancer | Active, not recruiting | USA | 0 |
| NCT06072781 | Phase III | Paclitaxel Pegylated liposomal doxorubicin Defactinib + RO5126766 Topotecan Anastrozole Letrozole | A Study of Avutometinib (VS-6766) + Defactinib (VS-6063) in Recurrent Low-Grade Serous Ovarian Cancer (RAMP 301) | Recruiting | USA | ITA | GBR | FRA | ESP | CAN | AUS | 0 |
| NCT05464810 | Phase I | Letrozole + Simvastatin Letrozole | Letrozole With and Without Simvastatin for the Treatment of Stage I-III Hormone Receptor Positive, HER2 Negative Breast Cancer | Recruiting | USA | 0 |
| NCT02010021 | Phase I | Letrozole | Presurgical Treatment With Letrozole in Patients With Early-stage Breast Cancer. | Completed | USA | 0 |
| NCT05183828 | FDA approved | Letrozole | Effect of HSD3B1 (1245C) Gene Mutation on Treatment of Stage I-III Breast Cancer | Recruiting | USA | 0 |
| NCT03238703 | FDA approved | Tamoxifen Exemestane Toremifene Anastrozole Letrozole | Endocrine Therapy in Treating Patients With HER2 Negative, Low Risk Breast Cancer | Withdrawn | USA | 0 |
| NCT06492616 | Phase III | Exemestane Elacestrant Tamoxifen Letrozole Anastrozole | A Study of Elacestrant Versus Standard Endocrine Therapy in Women and Men With ER+,HER2-, Early Breast Cancer With High Risk of Recurrence (ELEGANT) | Recruiting | USA | 0 |
| NCT01669343 | Phase I | Letrozole | Aromatase Inhibitor Host Factors Study | Completed | CAN | 0 |
| NCT05601700 | Phase III | Carboplatin + Paclitaxel Letrozole | Letrozole for Estrogen/Progesterone Receptor Positive Low-grade Serous Epithelial Ovarian Cancer (LEPRE Trial) (LEPRE) | Recruiting | ITA | 0 |
| NCT05447910 | Phase II | Letrozole | Analysis of Letrozole in Patients With Operable Hormone Receptor Positive, HER2 Negative Breast Cancer | Completed | USA | 0 |
| NCT02188745 | Phase II | Exemestane Estradiol Anastrozole Letrozole | ER Reactivation Therapy for Breast Cancer (POLLY) | Completed | USA | 0 |
| NCT02296801 | Phase II | Palbociclib Letrozole | A Phase II Randomized Study Evaluating the Biological and Clinical Effects of the Combination of Palbociclib With Letrozole as Neoadjuvant Therapy in Post-Menopausal Women With Estrogen-Receptor Positive Primary Breast Cancer | Completed | USA | GBR | CAN | 0 |
| NCT01160211 | Phase III | Lapatinib + Trastuzumab Letrozole Anastrozole Lapatinib Trastuzumab Exemestane | A Study to Compare the Safety and Efficacy of an Aromatase Inhibitor in Combination With Lapatinib, Trastuzumab or Both for the Treatment of Hormone Receptor Positive, HER2+ Metastatic Breast Cancer | Completed | USA | TUR | ROU | POL | NOR | LTU | ITA | ISR | IRL | HUN | HRV | GRC | GBR | FRA | ESP | DEU | CAN | BRA | BGR | BEL | AUS | ARG | 16 |
| NCT05774951 | Phase III | Tamoxifen Exemestane Anastrozole Letrozole Camizestrant | A Study of Camizestrant in ER+/HER2- Early Breast Cancer After at Least 2 Years of Standard Adjuvant Endocrine Therapy (CAMBRIA-1) | Recruiting | USA | TUR | ROU | POL | NLD | ITA | ISR | HUN | GRC | GBR | FRA | ESP | DEU | CZE | CAN | BRA | BGR | BEL | AUT | AUS | ARG | 18 |
| NCT03219476 | Phase II | Anastrozole Letrozole Tamoxifen Exemestane | Neoadjuvant Endocrine Therapy in Hormone Receptor-Positive, Human Epidermal Growth Factor Receptor 2 (HER2)-Negative Node-Negative Breast Cancer | Active, not recruiting | USA | 0 |
| NCT01491737 | Phase II | Anastrozole Letrozole Trastuzumab Pertuzumab + Trastuzumab | A Study of Pertuzumab in Combination With Trastuzumab Plus an Aromatase Inhibitor in Participants With Metastatic Human Epidermal Growth Factor Receptor 2 (HER2)-Positive and Hormone Receptor-Positive Advanced Breast Cancer (PERTAIN) | Completed | USA | TUR | ITA | GBR | FRA | ESP | BRA | 1 |
| NCT03555877 | Phase II | Anastrozole Fulvestrant Fulvestrant + Ribociclib Letrozole Exemestane + Ribociclib Letrozole + Ribociclib Anastrozole + Ribociclib Exemestane | Anti-hormonal Therapie With Ribociclib in HR-positive / HER2- Negative Metastatic Breast Cancer (AMICA) | Completed | DEU | 0 |
| NCT03962647 | Phase I | Letrozole | A 2-Week Ketogenic Diet in Combination With Letrozole to Modulate PI3K Signaling in ER+ Breast Cancer | Completed | USA | 0 |
| NCT04961996 | Phase III | Exemestane Giredestrant Letrozole Anastrozole | A Study Evaluating the Efficacy and Safety of Adjuvant Giredestrant Compared With Physician's Choice of Adjuvant Endocrine Monotherapy in Participants With Estrogen Receptor-Positive, HER2-Negative Early Breast Cancer (lidERA Breast Cancer) | Recruiting | USA | TUR | SWE | SVN | SVK | ROU | POL | NLD | LVA | ITA | ISR | IRL | HUN | HRV | GRC | GBR | FRA | FIN | ESP | DEU | CZE | CHE | CAN | BRA | BGR | BEL | AUT | AUS | ARG | 25 |
| NCT04289805 | FDA approved | Letrozole | Controlled Ovarian Stimulation in Newly Diagnosed Breast Cancer PatiEnts (fAMHOPE) (fAMHOPE) | Recruiting | ITA | FRA | BEL | 0 |
| NCT03809988 | Phase II | Fulvestrant Fulvestrant + Palbociclib Letrozole Letrozole + Palbociclib | PALbociclib Rechallenge in horMone Receptor-posItive/HER2- Negative Advanced Breast Cancer (PALMIRA) | Completed | SVN | ITA | GBR | FRA | ESP | DEU | 0 |
| NCT05472792 | Phase II | Toremifene Exemestane Tamoxifen Letrozole Anastrozole Fulvestrant | Adjuvant Monotherapy With Endocrine Therapy or Accelerated Partial Breast Irradiation Following Lumpectomy for Low Risk Breast Cancer Patients Over 65 (CAMERAN) (CAMERAN) | Recruiting | USA | 0 |
| NCT04614194 | Phase II | Letrozole Abemaciclib + Letrozole | Single Cell Immune and Non-immune Correlates of Response to Neoadjuvant Abemaciclib | Recruiting | USA | 0 |
| NCT05712941 | Phase III | G1T38 + Letrozole Letrozole | Comparison of Letrozole With Lerociclib Versus Letrozole With Placebo Control in Patients With Advanced/Metastatic or Recurrent, Grade 1 or Grade 2 Endometrial Cancer | Withdrawn | 0 | |
| NCT06465368 | Phase II | Letrozole Letrozole + PF-07220060 | A Study to Learn About the Study Medicine PF-07220060 Together With Letrozole Compared to Letrozole Alone in Women Post Menopause | Recruiting | USA | SWE | SVK | POL | ITA | ESP | BEL | AUS | 2 |
| NCT02764541 | Phase II | Palbociclib Palbociclib + Tamoxifen Letrozole Tamoxifen | Palbociclib and Endocrine Therapy for LObular Breast Cancer Preoperative Study (PELOPS) | Active, not recruiting | USA | 0 |
| NCT06044623 | Phase III | Exemestane Abemaciclib Palbociclib Ribociclib Letrozole Anastrozole Fulvestrant | Implementing Geriatric Assessment for Dose Optimization of Cyclin-dependent Kinase (CDK) 4/6-inhibitors in Older Breast Cancer Patients (IMPORTANT) | Recruiting | SWE | NOR | ITA | GRC | FIN | ESP | 0 |
| NCT06016738 | Phase III | Fulvestrant Letrozole Anastrozole Palazestrant Exemestane | OP-1250 (Palazestrant) vs. Standard of Care for the Treatment of ER+/HER2- Advanced Breast Cancer (OPERA-01) | Recruiting | USA | ROU | POL | NLD | ITA | HUN | GBR | FRA | ESP | DEU | CZE | CAN | BRA | BGR | BEL | AUS | ARG | 8 |
| NCT04134598 | Phase III | Tamoxifen Letrozole Anastrozole Exemestane | ExclUsive endocRine Therapy Or Radiation theraPy for Women Aged >=70 Years Early Stage Breast Cancer (EUROPA) | Recruiting | ITA | 0 |
| NCT03355157 | FDA approved | Exemestane + Palbociclib Tamoxifen Paclitaxel Exemestane Capecitabine Palbociclib + Tamoxifen Epirubicin Vinorelbine Fulvestrant + Palbociclib Fulvestrant Letrozole Letrozole + Palbociclib | A Randomized, Open-label, Multi-center Phase IV Study Evaluating Palbociclib Plus Endocrine Treatment Versus a Chemotherapy-based Treatment Strategy in Patients With Hormone Receptor Positive / HER2 Negative Breast Cancer in a Real World Setting (GBG 93 - PADMA Study). (PADMA) | Completed | DEU | 0 |
| NCT03122197 | Phase I | Letrozole | Study of Letrozole in Recurrent Gliomas | Recruiting | USA | 0 |
| NCT02689921 | Phase II | Anastrozole Letrozole Leuprolide Pertuzumab + Trastuzumab Exemestane | NEOADjuvant Aromatase Inhibitor and Pertuzumab/Trastuzumab for Women With Breast Cancer (NEOADAPT) | Unknown status | USA | 0 |
| NCT05101564 | Phase II | Amcenestrant Alpelisib Infigratinib Tamoxifen Letrozole Amcenestrant + Letrozole | Umbrella Trial Testing Integrative Subtype Targeted Therapeutics in Estrogen Receptor Positive, HER2-Negative Breast Cancer | Active, not recruiting | USA | 0 |
| NCT01797523 | Phase II | Letrozole Everolimus Metformin | RAD/Letrozole/Metformin | Active, not recruiting | USA | 0 |
| NCT01296555 | Phase I | Fulvestrant Taselisib Letrozole | A Dose Escalation Study Evaluating the Safety and Tolerability of GDC-0032 in Patients With Locally Advanced or Metastatic Solid Tumors And in Combination With Endocrine Therapy in Patients With Locally Advanced or Metastatic Hormone Receptor-Positive Breast Cancer | Terminated | USA | FRA | ESP | CAN | 0 |
| NCT02918084 | Phase III | Exemestane Anastrozole Letrozole | CONcurrent vs SEqueNTial Adjuvant Treatments in Early Breast Cancer (GIM10-CONSENT) | Active, not recruiting | ITA | 0 |
| NCT02095184 | Phase 0 | Anastrozole Letrozole | GCC 1366: Anti-Proliferative Response to NeoAdjuvant AIs in Overweight and Obese Patients | Recruiting | USA | 0 |
| NCT02753686 | Phase I | Tamoxifen Exemestane Fulvestrant Letrozole Anastrozole Everolimus + Exemestane | Treatment of Canadian Men and Pre/Peri/Post-menopausal Women With ER+ Advanced Breast Cancer in the Real-World Setting With Hormone Therapy ± Targeted Therapy (Treat ER+ight) | Completed | CAN | 0 |
| NCT03747042 | Phase I | Letrozole | Letrozole in Post-Menopausal Patients With Operable Hormone-Sensitive Breast Cancer | Active, not recruiting | USA | 0 |
| NCT04568616 | Phase II | Letrozole | Phase II Study of Neoadjuvant ArOMatase Inhibitor Therapy for ER+ Breast Cancer (NAOMI) (NAOMI) | Recruiting | USA | 0 |
| NCT04191382 | Phase II | Letrozole Amcenestrant | Phase 2 Window Study of SAR439859 Versus Letrozole in ER+, HER2- Pre-operative Post-menopausal Primary Breast Cancer (AMEERA-4) | Terminated | USA | ITA | FRA | ESP | BEL | 4 |
| NCT02619669 | Phase I | Sapanisertib Letrozole | Neoadjuvant Run-In Study With TAK-228 (MLN0128) Followed by Letrozole/TAK-228 (MLN0128) in Women With High-Risk ER+/HER2- Breast Cancer | Withdrawn | USA | 0 |
| NCT00651976 | Phase I | Letrozole | Letrozole in Treating Postmenopausal Women With Stage I, II or III Breast Cancer That Can Be Removed by Surgery | Terminated | USA | 0 |
| NCT06179303 | Phase II | Tamoxifen Exemestane Abemaciclib Fulvestrant Letrozole Anastrozole | Functional Imaging in Prediction of Response to Abemaciclib for Advanced Hormone Receptor-Positive, HER2-Negative Breast Cancer | Suspended | USA | 0 |
| NCT03778931 | Phase III | Letrozole Exemestane Elacestrant Fulvestrant Anastrozole | Phase 3 Trial of Elacestrant vs. Standard of Care for the Treatment of Patients With ER+/HER2- Advanced Breast Cancer (EMERALD) | Completed | USA | ITA | ISR | IRL | HUN | GRC | GBR | FRA | ESP | DNK | CAN | BEL | AUT | AUS | ARG | 2 |
| NCT05512364 | Phase III | Letrozole Anastrozole Exemestane Elacestrant Tamoxifen | Elacestrant for Treating ER+/HER2- Breast Cancer Patients With ctDNA Relapse (TREAT ctDNA) (TREAT ctDNA) | Recruiting | ITA | IRL | FRA | DEU | BEL | 0 |
| NCT01035099 | Phase I | Letrozole | RCT of Fixed vs Titrated Letrozole in Breast Cancer Patient Undergoing IVF | Completed | USA | 0 |
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