A Pharmacokinetic Study to Evaluate the Effect of Antacids on Raltegravir (MK-0518) in HIV-Infected Participants (MK-0518-247)

February 14, 2017 updated by: Merck Sharp & Dohme LLC

A Study to Evaluate the Effect of Metal Cation-Containing Antacids on Raltegravir Pharmacokinetics in HIV-Infected Subjects on a Stable Raltegravir-Containing Regimen

This study will evaluate: (1) the effect of co-administration of single doses of calcium carbonate antacid and magnesium/aluminum hydroxide antacid on the steady-state plasma pharmacokinetic profile of raltegravir in human immunodeficiency virus (HIV)-infected participants; and (2) the effect of staggered dosing of a single dose of a magnesium/aluminum hydroxide antacid 2 hours before and 2 hours after administration of raltegravir on the steady-state plasma pharmacokinetic profile of raltegravir in the same participants.

The study will determine whether (1) the C12hrs of steady-state raltegravir after co-administration of single doses of calcium carbonate antacid is decreased to a clinically meaningful degree compared with C12hrs after administration of raltegravir alone; and whether (2) the C12hrs of steady-state raltegravir after co-administration of a single dose of magnesium/aluminum hydroxide antacid is decreased to a clinically meaningful degree compared with the C12hrs after administration of raltegravir alone.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
27

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 1

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

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • HIV-infected participant on a stable raltegravir dose (400 mg every 12 hours) as part of a stable anti-retroviral regimen (ARV) for at least 1 month and will maintain current ARV therapy throughout the study
  • Body Mass Index ≤32 kg/m^2
  • Good general health
  • Can be a current smoker and/or user of nicotine or nicotine-containing products, but use of nicotine-containing products will not be permitted during the stay at the clinical research site

Exclusion Criteria:

  • History of gastric bypass surgery
  • Pregnant or nursing
  • Mentally or legally incapacitated, has significant emotional problems, or has a history of a clinically significant psychiatric disorder; participants who have had situational depression may be enrolled at the discretion of the investigator.
  • History of stroke, chronic seizures, or major neurological disorder
  • History of clinically significant endocrine, gastrointestinal, cardiovascular, hematological, hepatic, immunological, renal, respiratory, or genitourinary abnormalities or diseases (excluding HIV); participants with a history of uncomplicated kidney stones or childhood asthma may be enrolled at the discretion of the investigator.
  • Active neoplastic disease deemed unstable or progressing by the investigator
  • Currently taking rifampin or unable to refrain from use of any proton pump inhibitor and any histamine-2 (H2)-blockers, over-the-counter antacids, calcium supplements, or multivitamins during the study
  • Consumes excessive amounts of alcohol
  • Consumes excessive amounts of coffee, tea, cola, or other caffeinated beverages
  • Major surgery or blood donation within the past 4 weeks
  • History of significant multiple and/or severe allergies or has had an anaphylactic reaction or significant intolerability to prescription or non-prescription drugs or food
  • Regular user of any illicit drugs or history of drug (including alcohol) abuse within the past 6 months; current methadone or suboxone use is allowed.

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: Treatment
  • Allocation: Randomized
  • Interventional Model: Crossover Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: RAL, TUMS+RAL, MINTOX+RAL, MINTOX Before RAL, MINTOX After RAL
Participants received Raltegravir in treatment period 1, followed by TUMS® + Raltegravir in treatment period 2, followed by MINTOX® + Raltegravir in treatment period 3, followed by MINTOX® 2 hours before Raltegravir in treatment period 4, followed by MINTOX® 2 hours After Raltegravir in treatment period 5. There was a 2-day washout between treatment periods.
Drug: Raltegravir

Raltegravir 400 mg oral tablet taken with 240 mL water every 12 hours

Throughout the study, participants will continue to take raltegravir along with their other HIV medications. On the day of co-dosing and intensive pharmacokinetic (PK) sampling, raltegravir will be dosed in the morning in a fasted state in all periods.

Other Names:
  • MK-0518
  • RAL
  • ISENTRESS™
Drug: TUMS® Ultra Strength

3 tablets TUMS® Ultra Strength (US) 1000 mg

Throughout the study, participants will continue to take raltegravir every 12 hours along with their other HIV medications. There will be a minimum of 2 days washout between treatment periods. On the day of co-dosing and intensive PK sampling, raltegravir will be dosed in the morning in a fasted state in all periods.

Other Names:
  • TUMS
  • calcium carbonate antacid
Drug: MINTOX® Maximum Strength

20 mL MINTOX® Maximum Strength (MS)

Throughout the study, participants will continue to take raltegravir every 12 hours along with their other HIV medications. There will be a minimum of 2 days washout between treatment periods. On the day of co-dosing and intensive PK sampling, raltegravir will be dosed in the morning in a fasted state in all periods.

Other Names:
  • MINTOX
  • magnesium/aluminum hydroxide antacid
Experimental: TUMS+RAL, MINTOX+RAL, RAL, MINTOX Before RAL, MINTOX After RAL
Participants received TUMS® + Raltegravir in treatment period 1, followed by MINTOX® + Raltegravir in treatment period 2, followed by Raltegravir in treatment period 3, followed by MINTOX® 2 hours before Raltegravir in treatment period 4, followed by MINTOX® 2 hours after Raltegravir in treatment period 5. There was a minimum 2-day washout between treatment periods.
Drug: Raltegravir

Raltegravir 400 mg oral tablet taken with 240 mL water every 12 hours

Throughout the study, participants will continue to take raltegravir along with their other HIV medications. On the day of co-dosing and intensive pharmacokinetic (PK) sampling, raltegravir will be dosed in the morning in a fasted state in all periods.

Other Names:
  • MK-0518
  • RAL
  • ISENTRESS™
Drug: TUMS® Ultra Strength

3 tablets TUMS® Ultra Strength (US) 1000 mg

Throughout the study, participants will continue to take raltegravir every 12 hours along with their other HIV medications. There will be a minimum of 2 days washout between treatment periods. On the day of co-dosing and intensive PK sampling, raltegravir will be dosed in the morning in a fasted state in all periods.

Other Names:
  • TUMS
  • calcium carbonate antacid
Drug: MINTOX® Maximum Strength

20 mL MINTOX® Maximum Strength (MS)

Throughout the study, participants will continue to take raltegravir every 12 hours along with their other HIV medications. There will be a minimum of 2 days washout between treatment periods. On the day of co-dosing and intensive PK sampling, raltegravir will be dosed in the morning in a fasted state in all periods.

Other Names:
  • MINTOX
  • magnesium/aluminum hydroxide antacid
Experimental: MINTOX+RAL, RAL, TUMS+RAL, MINTOX Before RAL, MINTOX After RAL
Participants received MINTOX® + Raltegravir in treatment period 1, followed by Raltegravir in treatment period 2, followed by TUMS® + Raltegravir in treatment period 3, followed by MINTOX® 2 hours before Raltegravir in treatment period 4, followed by MINTOX® 2 hours after Raltegravir in treatment period 5. There was a minimum 2-day washout between treatment periods.
Drug: Raltegravir

Raltegravir 400 mg oral tablet taken with 240 mL water every 12 hours

Throughout the study, participants will continue to take raltegravir along with their other HIV medications. On the day of co-dosing and intensive pharmacokinetic (PK) sampling, raltegravir will be dosed in the morning in a fasted state in all periods.

Other Names:
  • MK-0518
  • RAL
  • ISENTRESS™
Drug: TUMS® Ultra Strength

3 tablets TUMS® Ultra Strength (US) 1000 mg

Throughout the study, participants will continue to take raltegravir every 12 hours along with their other HIV medications. There will be a minimum of 2 days washout between treatment periods. On the day of co-dosing and intensive PK sampling, raltegravir will be dosed in the morning in a fasted state in all periods.

Other Names:
  • TUMS
  • calcium carbonate antacid
Drug: MINTOX® Maximum Strength

20 mL MINTOX® Maximum Strength (MS)

Throughout the study, participants will continue to take raltegravir every 12 hours along with their other HIV medications. There will be a minimum of 2 days washout between treatment periods. On the day of co-dosing and intensive PK sampling, raltegravir will be dosed in the morning in a fasted state in all periods.

Other Names:
  • MINTOX
  • magnesium/aluminum hydroxide antacid
Experimental: RAL, MINTOX+RAL, TUMS+RAL, MINTOX After RAL, MINTOX Before RAL
Participants received Raltegravir in treatment period 1, followed by MINTOX® + Raltegravir in treatment period 2, followed by TUMS® + Raltegravir in treatment period 3, followed by MINTOX® 2 hours after Raltegravir in treatment period 4, followed by MINTOX® 2 hours before Raltegravir in treatment period 5. There was a minimum 2-day washout between treatment periods.
Drug: Raltegravir

Raltegravir 400 mg oral tablet taken with 240 mL water every 12 hours

Throughout the study, participants will continue to take raltegravir along with their other HIV medications. On the day of co-dosing and intensive pharmacokinetic (PK) sampling, raltegravir will be dosed in the morning in a fasted state in all periods.

Other Names:
  • MK-0518
  • RAL
  • ISENTRESS™
Drug: TUMS® Ultra Strength

3 tablets TUMS® Ultra Strength (US) 1000 mg

Throughout the study, participants will continue to take raltegravir every 12 hours along with their other HIV medications. There will be a minimum of 2 days washout between treatment periods. On the day of co-dosing and intensive PK sampling, raltegravir will be dosed in the morning in a fasted state in all periods.

Other Names:
  • TUMS
  • calcium carbonate antacid
Drug: MINTOX® Maximum Strength

20 mL MINTOX® Maximum Strength (MS)

Throughout the study, participants will continue to take raltegravir every 12 hours along with their other HIV medications. There will be a minimum of 2 days washout between treatment periods. On the day of co-dosing and intensive PK sampling, raltegravir will be dosed in the morning in a fasted state in all periods.

Other Names:
  • MINTOX
  • magnesium/aluminum hydroxide antacid
Experimental: TUMS+RAL, RAL, MINTOX+RAL, MINTOX After RAL, MINTOX Before RAL
Participants received TUMS® + Raltegravir in treatment period 1, followed by Raltegravir in treatment period 2, followed by MINTOX® + Raltegravir in treatment period 3, followed by MINTOX® 2 hours after Raltegravir in treatment period 4, followed by MINTOX® 2 hours before Raltegravir in treatment period 5. There was a minimum 2-day washout between treatment periods.
Drug: Raltegravir

Raltegravir 400 mg oral tablet taken with 240 mL water every 12 hours

Throughout the study, participants will continue to take raltegravir along with their other HIV medications. On the day of co-dosing and intensive pharmacokinetic (PK) sampling, raltegravir will be dosed in the morning in a fasted state in all periods.

Other Names:
  • MK-0518
  • RAL
  • ISENTRESS™
Drug: TUMS® Ultra Strength

3 tablets TUMS® Ultra Strength (US) 1000 mg

Throughout the study, participants will continue to take raltegravir every 12 hours along with their other HIV medications. There will be a minimum of 2 days washout between treatment periods. On the day of co-dosing and intensive PK sampling, raltegravir will be dosed in the morning in a fasted state in all periods.

Other Names:
  • TUMS
  • calcium carbonate antacid
Drug: MINTOX® Maximum Strength

20 mL MINTOX® Maximum Strength (MS)

Throughout the study, participants will continue to take raltegravir every 12 hours along with their other HIV medications. There will be a minimum of 2 days washout between treatment periods. On the day of co-dosing and intensive PK sampling, raltegravir will be dosed in the morning in a fasted state in all periods.

Other Names:
  • MINTOX
  • magnesium/aluminum hydroxide antacid
Experimental: MINTOX+RAL, TUMS+RAL, RAL, MINTOX After RAL, MINTOX Before RAL
Participants received MINTOX® + Raltegravir in treatment period 1, followed by TUMS® + Raltegravir in treatment period 2, followed by Raltegravir in treatment period 3, followed by MINTOX® 2 hours after Raltegravir in treatment period 4, followed by MINTOX® 2 hours before Raltegravir in treatment period 5. There was a minimum 2-day washout between treatment periods.
Drug: Raltegravir

Raltegravir 400 mg oral tablet taken with 240 mL water every 12 hours

Throughout the study, participants will continue to take raltegravir along with their other HIV medications. On the day of co-dosing and intensive pharmacokinetic (PK) sampling, raltegravir will be dosed in the morning in a fasted state in all periods.

Other Names:
  • MK-0518
  • RAL
  • ISENTRESS™
Drug: TUMS® Ultra Strength

3 tablets TUMS® Ultra Strength (US) 1000 mg

Throughout the study, participants will continue to take raltegravir every 12 hours along with their other HIV medications. There will be a minimum of 2 days washout between treatment periods. On the day of co-dosing and intensive PK sampling, raltegravir will be dosed in the morning in a fasted state in all periods.

Other Names:
  • TUMS
  • calcium carbonate antacid
Drug: MINTOX® Maximum Strength

20 mL MINTOX® Maximum Strength (MS)

Throughout the study, participants will continue to take raltegravir every 12 hours along with their other HIV medications. There will be a minimum of 2 days washout between treatment periods. On the day of co-dosing and intensive PK sampling, raltegravir will be dosed in the morning in a fasted state in all periods.

Other Names:
  • MINTOX
  • magnesium/aluminum hydroxide antacid

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Least Squares Mean Steady State Plasma Concentration (C12hrs) of Raltegravir After Coadministration of Antacid (Primary Hypothesis)
Time Frame: 12 hours postdose
Participant blood samples were collected to measure the steady state plasma concentration of raltegravir 12 hours after administration alone or with a single dose of antacid. The primary hypothesis compared C12hrs of raltegravir when administered alone with C12hrs of raltegravir when coadministered with TUMS® or MINTOX®.
12 hours postdose
Least Squares Mean Steady State Plasma Concentration (C12hrs) of Raltegravir After Staggered Administration of Antacid (Secondary Hypothesis)
Time Frame: 12 hours postdose
Participant blood samples were collected to measure the steady state plasma concentration of raltegravir 12 hours after administration alone or before or after a single dose of antacid. The secondary hypothesis compared C12hrs of raltegravir when administered alone with C12hrs of raltegravir when administered 2 hours before or after MINTOX®.
12 hours postdose
Least Squares Mean Steady State Area Under the Plasma Concentration-time Curve (AUC0-12hrs) of Raltegravir After Coadministration of Antacid (Primary Hypothesis)
Time Frame: Predose, 0.5, 1, 1.5, 2, 3, 4, 6, 8, and 12 hours postdose
Participant blood samples were collected to measure the steady state AUC of raltegravir up to 12 hours after administration alone or with a single dose of antacid. The primary hypothesis compared AUC0-12hrs of raltegravir when administered alone with AUC0-12hrs of raltegravir when coadministered with TUMS® or MINTOX®.
Predose, 0.5, 1, 1.5, 2, 3, 4, 6, 8, and 12 hours postdose
Least Squares Mean Steady State Area Under the Plasma Concentration-Time (AUC0-12hrs) of Raltegravir After Staggered Administration of Antacid (Secondary Hypothesis)
Time Frame: Predose, 0.5, 1, 1.5, 2, 3, 4, 6, 8, and 12 hours postdose
Participant blood samples were collected to measure the steady state AUC of raltegravir up to 12 hours after administration alone or before or after a single dose of antacid. The secondary hypothesis compared AUC0-12hrs of raltegravir when administered alone with AUC0-12hrs of raltegravir when administered 2 hours before or after MINTOX®.
Predose, 0.5, 1, 1.5, 2, 3, 4, 6, 8, and 12 hours postdose
Least Squares Mean Maximum Plasma Concentration (Cmax) of Raltegravir After Coadministration of Antacid (Primary Hypothesis)
Time Frame: Predose, 0.5, 1, 1.5, 2, 3, 4, 6, 8, and 12 hours postdose
Participant blood samples were collected to measure the steady state maximum plasma concentration of raltegravir when administered alone or with a single dose of antacid. The primary hypothesis compared Cmax of raltegravir when administered alone with Cmax of raltegravir when coadministered with TUMS® or MINTOX®.
Predose, 0.5, 1, 1.5, 2, 3, 4, 6, 8, and 12 hours postdose
Least Squares Mean Maximum Plasma Concentration (Cmax) of Raltegravir After Staggered Administration of Antacid (Secondary Hypothesis)
Time Frame: Predose, 0.5, 1, 1.5, 2, 3, 4, 6, 8, and 12 hours postdose
Participant blood samples were collected to measure the maximum steady state plasma concentration of raltegravir after administration alone or before or after a single dose of antiacid. The secondary hypothesis compared Cmax of raltegravir when administered alone with Cmax of raltegravir when administered 2 hours before or after MINTOX®.
Predose, 0.5, 1, 1.5, 2, 3, 4, 6, 8, and 12 hours postdose
Mean Time to Maximum Plasma Concentration (Tmax) of Raltegravir
Time Frame: Predose, 0.5, 1, 1.5, 2, 3, 4, 6, 8, and 12 hours postdose
Participant blood samples were collected to measure the time to achieve the maximum steady state plasma concentration of raltegravir when administered alone or with a single dose of antacid
Predose, 0.5, 1, 1.5, 2, 3, 4, 6, 8, and 12 hours postdose
Number of Participants With Any Clinical or Laboratory Adverse Event (AE)
Time Frame: Up to 7 days after the last dose of study drug

An AE is defined as any unfavorable and unintended change in the

structure, function, or chemistry of the body temporally associated with the use of the study drug, whether or not considered related to the use of the product. Any worsening of a preexisting condition which is temporally associated with the use of the study drug is also an adverse experience.
Up to 7 days after the last dose of study drug

Collaborators and Investigators

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

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Merck Sharp & Dohme LLC

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.

General Publications

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

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
June 1, 2012

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
October 1, 2012

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
October 1, 2012

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
June 15, 2012

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
June 15, 2012

First Posted (Estimate)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
June 19, 2012

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
March 21, 2017

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
February 14, 2017

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
February 1, 2017

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 0518-247

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

YES

IPD Plan Description

http://www.merck.com/clinical-trials/pdf/Merck%20Procedure%20on%20Clinical%20Trial%20Data%20Access%20Final_Updated%20July_9_2014.pdf

http://engagezone.msd.com/ds_documentation.php

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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