Monotherapy With Letrozole in Tubal Pregnancy

NCT ID: NCT05839561

Last Updated: 2023-11-18

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

22 participants

Study Classification

INTERVENTIONAL

Study Start Date

2020-12-01

Study Completion Date

2023-06-30

Brief Summary

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It is hypothesized that the inhibition of estradiol production by letrozole may interfere with physiological effects of progesterone necessary to maintain the pregnancy. Treatment of tubal pregnancy with letrozole would allow to avoid the adverse effects of methotrexate (MTX) in women refusing surgery. The aim was to compare the effectiveness of letrozole with MTX in the management of tubal pregnancy.

Detailed Description

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A prospective cohort study is conducted among women with tubal pregnancy. Women with increasing B-human chorionic gonadotropin (B-hCG) concentrations are included.

Two study arms were planned:

i) women treated with MTX: MTX in a single dose of 100 mg intravenously on day 0; ii) women treated with letrozole: letrozole at a daily dose of 5 mg orally for 10 days from day 0.

The inclusion criteria included B-hCG concentration up to 3000 mIU/ml and no contraindications to conservative treatment. Women who did not meet criteria for conservative treatment were excluded. Blood parameters (B-hCG, hemoglobin, creatinine, urea, alanine/aspartate transaminase, gamma-glutamyltransferase, bilirubin) were tested on days 0,4,7. Cases of treatment failure were counted, i.e. the need to perform laparoscopy due to tubal pregnancy rupture, pain, increase in B-hCG concentration.

The women were given the option to choose the treatment used in the study. All enrolled women gave informed written consent to participate in the study.

Conditions

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Tubal Pregnancy Unruptured

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Tubal pregnancy treated with MTX

MTX in a single dose of 100 mg intravenously on day 0

Group Type ACTIVE_COMPARATOR

MTX as monotherapy

Intervention Type DRUG

MTX in a single dose of 100 mg intravenously on day 0

Tubal pregnancy treated with letrozole

Letrozole in a daily dose of 5 mg (2 x 2.5 mg) orally for 10 days from day 0

Group Type ACTIVE_COMPARATOR

Letrozole as monotherapy

Intervention Type DRUG

Letrozole 5 mg daily orally for 10 days from day 0

Interventions

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Letrozole as monotherapy

Letrozole 5 mg daily orally for 10 days from day 0

Intervention Type DRUG

MTX as monotherapy

MTX in a single dose of 100 mg intravenously on day 0

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

* tubal pregnancy confirmed on pelvic ultrasound
* increasing serum B-hCG concentrations in at least two subsequent measures
* serum B-hCG concentration ≤ 3000 mIU/ml

Exclusion Criteria

* free fluid in lesser pelvis on pelvic ultrasound
* positive fetal heartbeat on pelvic ultrasound
* abdominal pain
* heterotopic pregnancy
* contraindications to MTX
Minimum Eligible Age

18 Years

Maximum Eligible Age

45 Years

Eligible Sex

FEMALE

Accepts Healthy Volunteers

No

Sponsors

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Jagiellonian University

OTHER

Sponsor Role lead

Responsible Party

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Iwona Magdalena Gawron

M.D., Ph.D., Principal Investigator

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Robert Jach, Prof., Ph.D.

Role: STUDY_CHAIR

Jagiellonian University

Locations

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Jagiellonian University Medical College, Department of Gynecology and Obstetrics, Clinic of Gynecological Endocrinology

Krakow, , Poland

Site Status

Countries

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Poland

Other Identifiers

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1072.6120.321.2020

Identifier Type: -

Identifier Source: org_study_id

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