Pasireotide LAR Administration in Lymphocele Prevention After Axillary Node Dissection for Breast Cancer (SOM 230)

January 24, 2017 updated by: Alliance Pour La Recherche en Cancerologie

Evaluation of the Effect of Pasireotide LAR Administration in the Lymphocele Prevention After Axillary Node Dissection for Breast Cancer

The principal morbidity following axillary node dissection within the scope of breast cancer surgery is the post-operative development of lymphocele. According to the literature, incidence can vary from 4 to 89% depending on the type of surgery, whether or not a drain is inserted or a compression dressing applied and the time at which the drain is removed… In our experience, the incidence is 40% [IGR (Gustave Roussy Institute) data focusing on 70 patients between November 2008 and February 2009]

Encouraging results in terms of reducing postoperative lymphoceles as well as drainage duration and volume using Octreotide have been recorded in two recent studies. A new molecule developed by Novartis Laboratories, namely pasireotide, is a somatostatin analog possessing strong affinity for several somatostatin receptors (30 to 40 times greater for sst1 and sst5, 5 times greater for sst3 and equivalent for sst2)

The purpose of this trial is to assess the efficacy of a pre-surgical injection of pasireotide LAR in reducing the postoperative incidence of symptomatic lymphoceles following axillary node dissection.

The secondary objectives are to assess the efficacy of prolonged release pasireotide on the duration of postoperative drainage, the daily drainage volume, the total drainage volume, the number of repeated lymphocele aspirations and the volume, the total volume of lymph aspirated, the incidence of postoperative febrile episodes, the length of hospital stay, and the length of time to onset of adjuvant chemotherapy. It is also to assess the safety of prolonged release pasireotide.

The primary objective of this study is to assess the efficacy of a preoperative prolonged release pasireotide injection in the reduction in the incidence of symptomatic, postoperative axillary lymphoceles following mastectomy-axillary node dissection.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

Octreotide, a somatostatin analog, has demonstrated its efficacy in the medical management of postoperative gastro-intestinal and pancreatic fistulae. Two recent studies have shown its value in reducing lymphoceles following axillary node dissection performed as part of breast cancer surgery.

The principal morbidity following axillary node dissection within the scope of breast cancer surgery is the postoperative development of lymphocele following the removal of an axillary drain. This may be a source of pain, repeated aspiration, infection and delayed local healing.

Pasireotide, a somatostatin analog under evaluation and possessing a high affinity for somatostatine receptors (30 to 40 times greater for sst1 and sst5 receptors, 5 times greater for sst3 and equivalent for sst2) is an attractive molecule in this indication.

Based on the encouraging results published with octreotide and the greater effects anticipated with pasireotide, the investigators want to assess the benefit of preoperative administration of pasireotide in reducing the incidence of axillary lymphoceles following mastectomy - axillary node dissection.

Somatostatin is a hormone that is widely distributed in the nervous and gastropancreatic system responsible for a variety of pharmacological and physiological effects. It can inhibit gastrointestinal endocrine and exocrine secretion and has an anti-inflammatory action (1). The direct effect of somatostatin on lymphatic flow has only been observed on the gastrointestinal tract.

Several series report the use of octreotide in the treatment of chylous ascites or in the management of thoracic duct injury (2). Although its mechanism of action has not been studied in depth, it probably acts by inhibiting splanchnic blood flow and limiting the absorption of triglycerides.

Somatostatin receptors have been demonstrated in lymphatic tissues, including those not associated with the intestinal tract. It is therefore probable that the inhibitory action of somatostatin on gastrointestinal lymphatic flow may also apply elsewhere in the body, and to the lymphatic system in particular.

Somatostatin might therefore decrease lymphatic flow following essentially axillary lymphadenectomy.

A new molecule, pasireotide, is currently in clinical development. This molecule is a somatostatin analog possessing an affinity 30 to 40 times greater for sst1 and sst5 receptors, 5 times greater for sst3 and comparable for sst2 than octreotide. It could therefore have a greater effect than octreotide.

The gradual release form must be injected intramuscularly prior to surgery. An effective plateau concentration is obtained after 10 days regardless of the selected dosage (20, 40, or 60 mg).

In addition to the many articles in the literature detailing the beneficial effects of octreotide on gastrointestinal and pancreatic fistulae and on regression of chylous ascites and chylothorax, a few articles have attempted to highlight its effect on postoperative lymphoceles.

Firstly, two articles have highlighted the positive effect of somatostatin analogs in reducing drainage volume and the incidence of lymphoceles following axillary node dissection in breast cancer:

Another more recent article by Mahmoud et al. (5) showed the same beneficial effects on the mean daily drainage volume (104 vs 145 ml, p=0.0001), the total duration of drainage (12.7 vs 25 days, p=0.0001) and the need for postoperative aspiration of lymphoceles (90 vs 40%, p=0.0001).

In 2006, in a different field (that of renal transplantation), an article by Capocasale et al.Pasireotide is an injectable somatostatin analog. Like natural somatostatin and known analogs, its pharmaceutical efficacy depends on its binding to somatostatin receptors. There are five of these (sst 1 to 5); they are expressed in various bodily tissues under normal physiological conditions. Somatostatin analogs activate these receptors, which in turn reduce cell activity and inhibits hormone synthesis. (7). Octreotide and lanreotide, which are currently used, have a strong affinity for the sst2 receptor and moderate affinity, if any, for the other types. Pasireotide possesses greater affinity than octreotide for certain somatostatin receptors: 30 times greater for sst1, 5 times greater for sst3 and 40 times greater for sst5. It possesses equivalent affinity for sst2 and none (like octreotide) for sst4.

In the literature, the incidence of axillary lymphoceles following surgery for breast cancer varies considerably: a recent meta-analysis of 66 studies revealed an incidence of 4 to 89 % depending on whether or not drainage was being carried out, the type of surgery (conservative or not), the time at which the drain was removed and whether or not a compression dressing was applied.

In our experience, the incidence at Hôpital Tenon is 40%. This percentage has been corroborated by Gustave Roussy Institute data, which recorded an incidence of 39.3% in out of 70 patients who underwent surgery between November 2008 and February 2009.

Several teams have reported their use of Sandostatin® or other somatostatin analogs in the management of patients suffering from inoperable peritoneal carcinoma (9-12). This treatment was used as supportive therapy and reduced the incidence of symptoms associated with an obstructive syndrome. It fact, it can reduce gastrointestinal secretions. Some authors have even suggested that somatostatin analogs possess an anti-tumor effect (9). Octreotide is recommended by AFSSAPS in the treatment of palliative care patients presenting with intestinal occlusion in peritoneal carcinoma. Since a Marketing Authorization (MA) has been granted for the use of somatostatin analogs in patients presenting with a gastrointestinal endocrine tumor, the use of pasireotide does not raise any specific ethical issue.

Study Type

Interventional

Enrollment (Actual)

91

Phase

  • Phase 2

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

      • Paris, France, 75020
        • Tenon Hospital
      • Villejuif, France, 94805
        • Institut Gustave Roussy

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (ADULT, OLDER_ADULT)

Accepts Healthy Volunteers

No

Genders Eligible for Study

Female

Description

Inclusion Criteria:

  • Female patient aged 18 years or over.
  • Patient understands French.
  • Patient covered by the French national health insurance system.
  • Any female patient scheduled for breast surgery with mastectomy and axillary node dissection indicated at the pre-surgical stage.

Exclusion Criteria:

  • Patient under the age of 18 years.
  • Patient who does not understand French.
  • Patient not covered by the French national health insurance system.
  • Patient exhibiting one or more contraindications to anesthesia and surgery.
  • Patient with a contra-indication to pasireotide
  • Refusal by the patient
  • Scheduled sentinel node procedure
  • Abnormal coagulation or curative anticoagulant treatment
  • Women of child-bearing potential without effective contraception,
  • Pregnant or breast-feeding women
  • Poorly controlled diabetes (HbA1c > 8%)
  • History of radiotherapy
  • Recurrent breast cancer
  • Patient with a congestive cardiac insufficiency (NYHA category III or IV), an instable angina pectoris, sustained ventricular tachycardia or ventricular fibrillation episodes or history of myocardial infarction during the last 6 months.
  • Patient presenting an extension of QT interval (QT corrected according to the Fridericia formula (QTcF)) at the screening or baseline (predose) > 450msec
  • History of syncope or family history of sudden death or significant cardiac arrhythmia
  • Risk factors for torsades de pointes: hypokaliaemia, hypomagnesaemia, known structural or ischaemic cardiac disease, bradycardia (HR<55/min) or high grade AV block
  • Concomitant disease that could prolong QT or increase exposure to the study medication including dehydration, renal or hepatic impairment
  • Concomitant medication known to increase the QT interval
  • Patient with an hepatic pathology such as cirrhosis, chronic hepatitis active or persistent, or an elevation of ALAT rate, ASAT rate twice higher than the normal superior limit (NSL)
  • Patient having leucocytes < 3x109/L, Hb < 90% LIN, platelets < 100x109/L
  • Patient having a pathology or medical history susceptible to interfere with the realization of the study or results evaluation according to the judgment of the investigator or the study monitor
  • Patient participating to another clinical trial with another molecule in study during the month before the first dose
  • Known oversensitivity to somatostatine analogs or another component of prolonged release pasireotide or prolonged release octreotide formulations.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: PREVENTION
  • Allocation: RANDOMIZED
  • Interventional Model: PARALLEL
  • Masking: TRIPLE

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
EXPERIMENTAL: PASIREOTIDE
INTRAMUSCULAR INJECTION OF PASIREOTIDE 60 MG
One INTRAMUSCULAR INECTION OF PASIREOTIDE 60 MG 10 TO 7 DAYS BEFORE SURGERY
PLACEBO_COMPARATOR: PLACEBO
INTRAMUSCULAR INJECTION OF PLACEBO
ONE INJECTION OF PLACEBO 10 TO 7 DAYS BEFORE SURGERY

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
aspirations global volume of lymphoceles
Time Frame: 1 to 32 days after surgery
the patients ratio who did not have post-operative axillary symptomatic lymphoceles defined as the absence of aspiration or a unique or iterative aspirations global volume of lymphoceles inferior to 60cc inclusive (≤) in the 28 days after the intervention or a systematic aspiration volume at the 28th day inferior to 120cc inclusive (≤).
1 to 32 days after surgery

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

September 1, 2010

Primary Completion (ACTUAL)

October 1, 2012

Study Completion (ACTUAL)

January 1, 2013

Study Registration Dates

First Submitted

May 18, 2011

First Submitted That Met QC Criteria

May 19, 2011

First Posted (ESTIMATE)

May 20, 2011

Study Record Updates

Last Update Posted (ESTIMATE)

January 25, 2017

Last Update Submitted That Met QC Criteria

January 24, 2017

Last Verified

January 1, 2017

More Information

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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