Neoadjuvant Letrozole in Postmenopausal Women With Hormone Receptor-Positive, HER2-Negative, Node Positive, Early-Stage Breast Cancer.
NELOPHER
Neo-Adjuvant Endocrine Therapy in Post-Menopausal Hormone Receptor Positive HER 2 Neu Negative Node Positive Early-Stage Breast Cancer Patients With One Year of Letrozole.
Cancer Care Hospital & Research Centre Foundation, Lahore
This estimate has passed. The registry has not confirmed an actual date for this milestone.
Primary Completion
July 2027
Estimated
Planned date reported by the registry; this milestone is not confirmed as achieved.
Study Completion
July 2029
Estimated
Planned date reported by the registry; this milestone is not confirmed as achieved.
Brief Summary
The goal of this clinical trial is to learn whether letrozole, a hormone therapy drug, is effective in treating early-stage, hormone receptor-positive, HER2-negative breast cancer that has spread to nearby lymph nodes in postmenopausal women. The study will also evaluate the safety of taking letrozole for one year before surgery.
The main questions this study aims to answer are:
Can one year of letrozole eliminate cancer from the underarm (axillary) lymph nodes?
Can treatment with letrozole reduce the need for extensive lymph node surgery?
How safe and tolerable is long-term letrozole treatment?
This is a single-arm study, meaning all participants will receive letrozole. There is no placebo or comparison group.
Participants will:
Take letrozole 2.5 mg by mouth once daily for one year
Attend regular clinic visits for physical exams, blood tests, and imaging studies
Undergo surgery after completing treatment
Be followed for up to two years to monitor cancer recurrence and survival
Registry Overview
Registry-reported information. Elapsed time and enrollment totals alone do not measure study progress or recruitment pace.
Recruitment status
not yet recruiting
Estimated enrollment
126 participants
Study completion date
July 2029
Estimated
Planned date reported by the registry; this milestone is not confirmed as achieved.
Listed locations
1 countries · 1 sites
Trial Relationships
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Study Timeline
Dates and qualifiers reported by the registry. Estimated dates do not confirm that a milestone has occurred.
First Submitted
January 31, 2026
Actual (reported)
First Posted
February 6, 2026
Actual (reported)
Study Start
June 2026
Estimated (date passed)
This estimate has passed. The registry has not confirmed an actual date for this milestone.
Primary Completion
July 2027
Estimated
Planned date reported by the registry; this milestone is not confirmed as achieved.
Study Completion
July 2029
Estimated
Planned date reported by the registry; this milestone is not confirmed as achieved.
Early-Stage Breast CancerHER2-Negative Breast CancerNode-Positive Breast CancerHormone Receptor-Positive Breast Cancer
Outcome Measures
Primary Outcomes (1)
Extent of Axillary Nodal Pathologic Complete Response (pCR)
Proportion of postmenopausal, hormone receptor-positive (ER+/PR+), HER2-negative, node-positive breast cancer patients achieving pathological complete response (pCR) in axillary lymph nodes after one year of neoadjuvant letrozole therapy, assessed by sentinel lymph node biopsy (SLNBx).
From baseline (pre-treatment) to the end of one-year letrozole treatment
Secondary Outcomes (3)
Loco-Regional Relapse Rate
Assessed at 6, 12, and 24 months post-treatment initiation
Distant Relapse Rate
Assessed at 6, 12, and 24 months post-treatment initiation
Safety and Tolerability
Monitored continuously during the 1-year treatment period, reported at 3-month intervals.
Letrozole is an oral aromatase inhibitor administered at a dose of 2.5 mg once daily for one year. It is used as neoadjuvant therapy in postmenopausal women with early-stage, hormone receptor-positive (ER+/PR+), HER2-negative, node-positive breast cancer to reduce tumor size and axillary lymph node involvement before surgery.
Also known as: Letrozole, Oral, 2.5mg daily, for 1 year
Both participants and investigators are aware that the participants are receiving letrozole.
No placebo or comparator group is involved.
Open-label design allows for safety monitoring and practical administration in a neoadjuvant cancer setting.
Purpose
TREATMENT
Intervention Model
SINGLE GROUP
Model Details: All participants will receive the same intervention - letrozole 2.5 mg orally daily for one year - and outcomes will be measured within this single group. There is no randomization, control, or comparator group, making it a single-arm study.
Menopausal Status: All patients must be postmenopausal, confirmed by serum estradiol levels or other clinical criteria.
Diagnosis: Histologically confirmed infiltrating ductal carcinoma of any grade.
Tumor Size: Primary tumor (T) category of T1 or T2 according to AJCC 8th edition, as measured by ultrasonography (USG) and mammography.
Node Involvement: N1 disease documented by clinical examination and USG, with histopathology confirmed by fine-needle aspiration cytology (FNAC) or core needle biopsy.
Hormone Receptor Status: Patients must be estrogen receptor (ER) positive and progesterone receptor (PR) positive/negative, with HER2 status negative.
You may not qualify if:
Age: Patients aged under 18 or over 69 years.
Tumor Size: Patients with a primary tumor larger than T2 \>5cm or with N2 disease.
Histological Type: Infiltrating lobular carcinoma or other non-invasive breast cancer types.
Prior Treatments: Previous treatment with neoadjuvant endocrine therapy (NET) or neoadjuvant chemotherapy (NACT).
Comorbidities: Significant comorbidities that preclude administration of anesthesia or compromise patient safety.
Disease Characteristics: Patients with multicentric or multifocal disease, as defined by imaging or histopathological findings.
Contact the study team to confirm eligibility.
Heterocyclic Compounds
Short Chain Dehydrogenase-Reductases
NAD (+) and NADP (+) Dependent Alcohol Oxidoreductases
Alcohol Oxidoreductases
Oxidoreductases
Enzymes
Enzymes and Coenzymes
Tumor Suppressor Proteins
Neoplasm Proteins
Proteins
Amino Acids, Peptides, and Proteins
This estimate has passed. The registry has not confirmed an actual date for this milestone.
Primary Completion
July 2027
Estimated
Planned date reported by the registry; this milestone is not confirmed as achieved.
Study Completion
July 2029
Estimated
Planned date reported by the registry; this milestone is not confirmed as achieved.
Last Updated
February 20, 2026
Record last verified: 2026-01
Data Sharing
IPD Sharing
Will not share
IPD will not be shared due to patient privacy and institutional data protection policies. Aggregate study results will be made publicly available through ClinicalTrials.gov and peer-reviewed publications.
Source record
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Source: ClinicalTrials.gov.
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