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Post-mastectomy Pain SyndromeNCT05935059

The Efficacy of Tianeptine Versus Pregabalin on Acute and Chronic Post Mastectomy Pain After Breast Cancer Surgery.

A study testing Pregabalin and Tianeptine in people with Post-mastectomy Pain Syndrome, run by National Cancer Institute, Egypt at 1 site in Egypt.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

Breast cancer is the most common malignancy among females. Nearly 40% of breast surgery patients experience moderate to severe acute postoperative pain, with severe pain persisting for more than 6 months in almost 20-50% of patients (post mastectomy pain syndrome) which is defined according to International… Read more about this study

Who is it for?
Ages 18 to 60 years, women only
Conditions the study is for
Post-mastectomy Pain Syndrome
What is being tested?
Pregabalin and Tianeptine
Type of treatment
Pill or oral medicine
Could I receive a placebo?
No, everyone receives an active treatment
How many people
90 participants
Where
1 siteEgypt
Study dates
21 Jun 2023to 1 Mar 2025
Phase
Interventional
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 to 60 years
  • Women only
  • No healthy volunteers
  • Adult

Who may be able to join

  • Breast cancer female patients.
  • ASA class II and III.
  • Age ≥ 18 and ≤ 60 Years.
  • Body mass index (BMI): > 20 kg/m2 and < 35 kg/m2.
  • Type of surgery; elective breast cancer surgery (either modified radical mastectomy or conservative breast surgery) combined with axillary dissection.

Who cannot join

  • Patient refusal.
  • Age <18 years or >65 years.
  • BMI <20 kg/m2 and >35 kg/m2.
  • Known sensitivity or contraindication to drugs used in the study (Pregabalin , Tianeptine , NSAIDs, or morphine ).
  • History of psychiatric disorders or history of major depression.
  • History of chronic pain that necessitates morphine at a daily dose of 30 mg or more (or equivalent opioids).
Show all 9Show fewer
  • history of gapabentenoids or antidepressant intake in the preceding three months.
  • Major medical conditions.
  • Pregnancy or lactation.

Trial locations and contacts

1 site in 1 country.

Egypt1 site
  • National Cancer Institute Cairo University

    Cairo, 11796

Other trials in Egypt

About this study

Official title: Evaluation of the Efficacy of Perioperative Administration of Tianeptine Versus Pregabalin on Acute and Chronic Post Mastectomy Pain After Breast Cancer Surgery. A Double-Blinded Randomized Controlled Trial.

Breast cancer is the most common malignancy among females. Nearly 40% of breast surgery patients experience moderate to severe acute postoperative pain, with severe pain persisting for more than 6 months in almost 20-50% of patients (post mastectomy pain syndrome) which is defined according to International Association for the Study of Pain (IASP) as pain which persists more than 3 months after mastectomy/lumpectomy affecting the anterior thorax, axilla, and/or medial upper arm. Different pharmacological tools have been in use for either prevention or treatment of such refractory pain syndrome with variable efficacy. The aim of this study is to assess the efficacy of the perioperative use of Pregabalin versus Tianeptine on the emergence of PMPS in female patients undergoing MRM for breast cancer.

Read the detailed description

Breast cancer is the most common diagnosed malignancy among females and the 5th cause of cancer-related deaths with an estimated number of 2.3 million new cases and 685,000 deaths worldwide in 2020.

Different modalities are used for management of breast cancer including surgery, radiation therapy (RT), chemotherapy (CT), endocrine (hormone) therapy (ET), and targeted therapy. Modified Radical Mastectomy (MRM) is one of the main modalities of breast cancer treatment. It accounts for 31% of all breast surgeries. It has been reported that 40% of the females complain from moderate-to-severe pain in the immediate post-operative period after breast cancer surgery.

Acute post-mastectomy pain can cause adverse impacts on the patients as delayed discharge from post-operative recovery area, impairs pulmonary and immune functions, increases risk of ileus, thromboembolism, myocardial infarction and may lead to increased length of hospital stay. It is also an important factor leading to the development of chronic post mastectomy pain syndrome (PMPS) in almost half of the patients.

The International Association for the Study of Pain (IASP) defines PMPS as pain which persists more than 3 months after mastectomy that affects the anterior thorax, axilla, and/or medial upper arm. It is usually described as the feeling of burning, stabbing, and pulling around the treatment side. The underlying pathophysiology of PMPS is highly complicated and involves both peripheral and central sensitization. It results from injury to the peripheral nerves in the axilla or the chest wall during the dissection of axillary lymph nodes. Multiple risk factors are involved in the development of PMPS including acute postoperative pain, age < 40 years, increased BMI , diagnosis at later-stage disease, psychosocial factors (i.e., anxiety, depression, sleep disturbances, catastrophizing), preoperative pain and adjuvant therapy (chemotherapy, radiation therapy).(8)Because PMP involves issues associated not only with pain management, but also with psychosocial disruption, the assessment of each of these domains should be addressed routinely so as to enable early detection and treatment.

Different pharmacological tools have been in use for either prevention or treatment of such refractory pain syndrome with variable efficacy.

Tianeptine is a unique antidepressant and anxiolytic medication that stimulates the uptake of serotonin (5-hydroxytryptamine; 5-HT), and 5-hydroxyindoleacetic acid (5-HIAA) in brain tissue . It acts as a full agonist at the mu-type opioid receptor (MOR) , the serotonin receptor ,dopamine (D2/3) receptors and glutamate receptors .It also reduces the hypothalamic-pituitary-adrenal response to stress, and thus prevents stress-related behavioral issues.

Pregabalin is a new synthetic molecule and a structural derivative of the inhibitory neurotransmitter γ-aminobutyric acid. It is an α2-δ (α2-δ) ligand that has analgesic, anticonvulsant, anxiolytic, and sleep-modulating activities. Pregabalin binds potently to the α2-δ subunit of calcium channels, resulting in a reduction in the release of several neurotransmitters, including glutamate, noradrenaline, serotonin, dopamine, and substance P , Pregabalin has also been found to be effective at reducing acute postoperative pain The efficacy of pregabalin in treating acute postsurgical pain has been demonstrated in numerous studies. A recent meta-analysis has suggested that pregabalin, at all doses and administration regimens, has opioid-sparing effects and reduces pain scores in the postsurgical setting, at the expense of increased sedation and visual disturbances; however, the efficacy of pregabalin in providing such in various surgical categories remains uncertain, and it is not known whether the risk: benefit ratio is greater for certain surgical categories The aim of this study is to assess the efficacy of the perioperative use of Pregabalin versus Tianeptine on the emergence of PMPS in female patients undergoing MRM for breast cancer.

Being tested
Pregabalin, Tianeptine
Keywords
Breast cancer, Post mastectomy pain, chronic pain
Medical subject headings
Breast Neoplasms, Chronic Pain

What participants receive

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

  • PregabalinDrug

    Also called Anticonvulsant

    Pregabalin 50Mg Oral Capsule. Pre-operative administration of Pregabalin for prevention of Post mastectomy Pain Syndrome (PMPS)

  • TianeptineDrug

    Also called Antidepressant

    Tianeptine 12.5Mg Capsules. Prevention of Post Mastectomy Pain Syndrome

Study groups in NCT05935059
Study groupRoleWhat they receive
pregabalin group (group P)Active comparatorpregabalin group (group P) patients will receive pregabalin (Lyrica, Pfizer, NY) 50 mg with a sip of water one hour before induction of anesthesia and repeated every 8 hours for five days after surgery. The pregabalin capsules will be given to patients by nurses blinded to the study. Neither the researcher allocating the participants, nor the assessing person knew the decoding of the groups in its relation to the allocation sequence. Data will be collected by a junior pain resident blinded to the study protocol.
Receives: Drug: Pregabalin
Tianeptine group (group T)Active comparatorTianeptine group (group T) patients will receive Tianeptine 12.5 mg (Stablon, Servier, France)with a sip of water one hour before induction of anesthesia and repeated every 8 hours for five days after surgery. The Tianeptine capsules will be given to patients by nurses blinded to the study. Neither the researcher allocating the participants, nor the assessing person knew the decoding of the groups in its relation to the allocation sequence. Data will be collected by a junior pain resident blinded to the study protocol.
Receives: Drug: Tianeptine

What is being measured

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

  1. the percentage of patients who developed Post Mastectomy Pain Syndrome (PMPS)

    The Percentage of patients developing Post Mastectomy Pain Syndrome (PMPS)

    Measured: 6 months

Secondary outcomes (8)
  1. Changes and stability in Mean Arterial Blood Pressure (MAP)

    Change in Mean Arterial Blood Pressure (MAP) in mmHg

    Measured: every 15 minutes during the surgery then at 1, 2, 4, 8, 12, 16, 20 and 24 hours postoperatively

  2. Changes and stability in Heart Rate (HR)

    Change in heart rate (HR) in beat\min

    Measured: every 15 minutes during the surgery then at 1, 2, 4, 8, 12, 16, 20 and 24 hours postoperatively

  3. Total amount of fentanyl consumed intraoperative

    the rescue analgesia will be administered intra-operative by fentanyl IV and the total fentanyl used will be recorded and compared between the groups

    Measured: Time of surgery

  4. 1st time opioids requested post-operative.

    In case of postoperative pain recorded, rescue analgesia will be provided in the form of IV morphine 3 mg boluses if the patient VAS Score ≥ 4. The total amount of morphine given in 24 hours will be recorded for both groups

    Measured: 24 hours after the surgery

  5. Total amount of morphine consumed postoperatively

    The total 24-hour morphine consumption will be recorded for every patient post operative.

    Measured: 24 hours after the surgery

  6. The degree of postoperative sedation according to Ramsay scores.

    Sedation will be assessed with Ramsay score (1 = anxious or restless or both; 2 = cooperative, orientated, and tranquil; 3= responding to commands; 4 = brisk response to stimulus; 5 = sluggish response to stimulus; and 6 = no response to stimulus). A Ramsay score of 5 or 6 will be considered excessively high sedation levels; a Ramsay score of 2 to 4 will be considered adequate sedation levels needing observation; a Ramsay score of 1 will be considered inadequate or insufficient sedation Levels

    Measured: 24 hours

  7. Postoperative nausea and vomiting (PONV).

    Postoperative nausea and vomiting (PONV) will be rated on a four-point verbal scale; (none =no nausea, mild =nausea but no vomiting, moderate=vomiting one attack, severe =vomiting >one attack). 0.1 mg/kg of IV ondansetron will be given to patients with moderate or severe postoperative nausea and vomiting.

    Measured: 24 hours

  8. Severity of PMPS according to Grading system for neuropathic pain (GSNP)

    Neuropathic pain will be evaluated according to the Grading System for Neuropathic Pain (GSNP). Positive neuropathic cases are those with GSNP 3 (probable) or GSNP 4 (definite) i.e. GSNP ≥ 3 . Grading system for neuropathic pain (GSNP) is as follows: Grade 1 (unlikely), Grade 2 (possible), Grade 3 (probable), and Grade 4 (definite )

    Measured: 6 motnths

Timeline

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

  1. First posted7 Jul 2023
  2. Study start21 Jun 2023
  3. Primary completion1 Mar 2025
  4. Study completion1 Mar 2025

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 N/A
Primary purpose
Supportive care
Allocation
Randomised
Intervention model
Parallel groups
Masking
None (open label)
Enrolment
90 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05935059
Sponsor's protocol ID
AP2305.501.039
Status last verified
Mar 2025
First submitted
29 Jun 2023
Last updated
10 Mar 2025
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No

Publications

  • Sung H, Ferlay J, Siegel RL, Laversanne M, Soerjomataram I, Jemal A, Bray F. Global Cancer Statistics 2020: GLOBOCAN Estimates of Incidence and Mortality Worldwide for 36 Cancers in 185 Countries. CA Cancer J Clin. 2021 May;71(3):209-249. doi: 10.3322/caac.21660. Epub 2021 Feb 4.

    PubMed 33538338
  • Dhankhar R, Vyas SP, Jain AK, Arora S, Rath G, Goyal AK. Advances in novel drug delivery strategies for breast cancer therapy. Artif Cells Blood Substit Immobil Biotechnol. 2010 Oct;38(5):230-49. doi: 10.3109/10731199.2010.494578.

    PubMed 20677900
  • Joshi GP, Ogunnaike BO. Consequences of inadequate postoperative pain relief and chronic persistent postoperative pain. Anesthesiol Clin North Am. 2005 Mar;23(1):21-36. doi: 10.1016/j.atc.2004.11.013.

    PubMed 15763409
  • Capuco A, Urits I, Orhurhu V, Chun R, Shukla B, Burke M, Kaye RJ, Garcia AJ, Kaye AD, Viswanath O. A Comprehensive Review of the Diagnosis, Treatment, and Management of Postmastectomy Pain Syndrome. Curr Pain Headache Rep. 2020 Jun 11;24(8):41. doi: 10.1007/s11916-020-00876-6.

    PubMed 32529416
  • Samuels BA, Nautiyal KM, Kruegel AC, Levinstein MR, Magalong VM, Gassaway MM, Grinnell SG, Han J, Ansonoff MA, Pintar JE, Javitch JA, Sames D, Hen R. The Behavioral Effects of the Antidepressant Tianeptine Require the Mu-Opioid Receptor. Neuropsychopharmacology. 2017 Sep;42(10):2052-2063. doi: 10.1038/npp.2017.60. Epub 2017 Mar 17.

    PubMed 28303899
  • Reyad RM, Omran AF, Abbas DN, Kamel MA, Shaker EH, Tharwat J, Reyad EM, Hashem T. The Possible Preventive Role of Pregabalin in Postmastectomy Pain Syndrome: A Double-Blinded Randomized Controlled Trial. J Pain Symptom Manage. 2019 Jan;57(1):1-9. doi: 10.1016/j.jpainsymman.2018.10.496. Epub 2018 Oct 22.

    PubMed 30359684

Questions about this trial

What is this clinical trial studying?

A study testing Pregabalin and Tianeptine in people with Post-mastectomy Pain Syndrome, run by National Cancer Institute, Egypt at 1 site in Egypt.

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 5 inclusion and 9 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: finished, as of the sponsor's last update on 10 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 Egypt. 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.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

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?

the percentage of patients who developed Post Mastectomy Pain Syndrome (PMPS) (time frame: 6 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 NCT05935059, which also lists 6 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 10 Mar 2025.

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