Epidemiology of Pituitary Tumours: Prevalence of Associated Neoplasia (EpidemioPIT)

August 31, 2021 updated by: Marie-Lise Jaffrain-Rea, MD, Neuromed IRCCS

Epidemiology of Pituitary Tumours: Prevalence of Associated Endocrine and Non-endocrine Tumours and Potential Implications in the Management and Follow-up of Patients"

The study aims to update current knowledge about the epidemiology of pituitary tumours (PiT), based on the wide body of scientific literature on new familial and/or syndromic forms. Although inherited predisposition is increasingly recognized, its clinical relevance in unselected series of PiT patients has not been specifically addressed. In addition, it is likely that further recognition of peculiar associations between PiT and other endocrine and/or non-endocrine neoplasia will further increase the spectrum of syndromic forms. Since the identification of inherited forms of PiT may have significant clinical implications in terms of patients management and familial screening, we aim to collect any relevant information in order to estimate their prevalence in a large unselected series of PiT patients and provide new clues for a modern clinical approach to these patients.

Study Overview

Detailed Description

Recent epidemiological studies indicate that clinically relevant PiT have a prevalence around 1%. The Neuromed Scientific Institute for Research and Cure (IRCCS) is a third referral center for the diagnosis and treatment of patients with hypothalamic-pituitary disorders, and PiT represent the most frequent condition.

The best known syndromic of PiT is Multiple Endocrine Neoplasia type 1 (MEN1), others are rare conditions, such as MEN1-like syndromes, Carney complex, Mc Cune Albright syndrome, the pheochromocytoma/paraganglioma/Pit syndrome. Apparently isolated familial forms of PiT (FIPA) have also been well characterized in the last decade.The genetics of inherited PiT is involving a growing number of genes.At the moment, the most frequently reported gene abnormalities consist of inactivating mutations of the MEN1 and Aryl hydrocarbon receptor Interacting Protein (AIP) genes, which are mainly observed in syndromic and isolated familial forms of PiT, respectively.

On the other hand, patients affected by growth-hormone (GH)-secreting PiT (acromegaly/gigantism) have an increased risk of associated neoplasia, which has been mainly attributed to the growth-promoting effects of GH and/or Insulin-like Growth Factor 1(IGF1). However, a variety of neoplasia have been recently observed in patients with non-functioning PiT, whereas patients affected by prolactinoma - the most common PiT phenotype - have been poorly studied. Associations between PiT and a variety of neoplasia may represent new forms of systemic forms of PiT.

The aim of the study is to evaluate the prevalence of endocrine and non-endocrine neoplasia in a large series of PiTpatients and to identify potential familial and syndromic forms, including new forms of tumor associations, in order to provide new insights in the epidemiology and genetics of PiT and evaluate their clinical relevance in daily practice.

Eligible patients will receive a detailed informative form about the aim, methods and potential implications of the study. They will be included upon written informed consent and be re-assured that they may refuse to participate or withdraw from the study at any time, without any prejudice in their clinical management.

Data will be collected retrospectively in patients followed-up in the last 5 years, when an increased awareness of systemic conditions has lead, in the respect of good clinical practice, to a systematic registration of familiarity for PiT and/or for associated neoplasia. As clinically recommended, most patients have been screened at least once for primary hyperparathyroidism (pHPT), which is the most prevalent endocrine tumor in MEN1, and thyroid ultrasound, which is generally proposed as an extension of any endocrinological visit. Therefore, parathyroid and/or thyroid tumours should have been correctly identified in a large majority of patients. In contrast, except for systemic search for colonic polyps or tumours by coloscopy in acromegalic patients, and screening for breast and colon cancer performed by the patients in the setting of the Italian National Health System (NHS) programme since the age of 50 yr-old, no systematic search for additional tumours was performed and diagnoses were typically made by the general practitioner and other specialists.

Any relevant clinical, biological or imaging data about PiT and extrapituitary tumours will be collected for each patients.

All data will be collected anonymously in a dedicated Excel file.

Statistical analysis will be performed with using a commercially available software - JMP version 11.0 distributed by Statistical Analysis Systems (SAS) (USA). The first part of the report will be descriptive, report all endocrine and non-endocrine neoplasia and potential familiarity for PiT and/or any other associated neoplasia. Then, a comparison will be made between groups and subgroups of PiT patients defined according to the PiT phenotype (functioning and nonfunctioning PiT subgroups, tumour volume and invasiveness), as well as gender, age and the presence of a familial setting. Based on public reports of the Italian registry of cancer (AIRTUM), an attempt will be made to compare the prevalence of the most frequent neoplasia in PiT patients with the general population. Attention will be paid to recognize syndromic forms of PiT, including known syndromes and new forms of associations between PiT and any endocrine or non-endocrine neoplasia.

Genetic evaluation and counselling will be proposed in selected cases, based on evaluation of the clinical picture with the specialist in clinical genetics present in the study team. A specific additional consent will be necessary to proceed to the genetic step and DNA conservation for further studies where appropriate. Leukocyte DNA will be collected by blood sampling. Diagnostic genetic testing will be appropriately performed according to the clinical presentation. For unknown associations, this study is intended to be preliminary to further genetic studies aiming to identify new candidate genes.

Study Type

Observational

Enrollment (Anticipated)

400

Contacts and Locations

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

Study Contact

Study Contact Backup

Study Locations

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

  • Child
  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

We estimate that more than 500 patients followed at the Neuroendocrinology unit meet the eligibility criteria for the study period, and that a majority of them will accept to enter the study. Patients are affected prevalently by functional pituitary tumours (prolactinomas about 50%, followed by acromegaly about 20%, corticotroph tumours..), others have clinically non-functiong pituitary tumours (about 25%). The large majority of patients are adult (> 90 %).

Description

Inclusion Criteria:

  • Any patient affected by a documented endocrine pituitary tumour (PiT)
  • At least one evaluation during the study period (2014-2018)

Exclusion Criteria:

  • Uncertain diagnosis of endocrine pituitary tumour
  • Any adult patient declining to enter the study
  • For the (few) patients aged less than 18 years, parents or legal tutors declining to include the patient in the study

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

Cohorts and Interventions

Group / Cohort
Intervention / Treatment
Pituitary tumours
Patients affected by pituitary tumours and followed-up at the Neuroendocrinology Unit over a 5 yrs period (2014-2018)
Retrospective registration of associated endocrine and non-endocrine neoplasia and potential familial setting
Other Names:
  • Genetic counselling where appropriate

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Prevalence of hyperparathyroidism (HPT)
Time Frame: Up to 6 months
measurement of plasma Parathormone (PTH) in % of upper limit of normal values (ULN)
Up to 6 months
Prevalence of hypercalcemia (hypercalcemic hyperparathyroidism)
Time Frame: Up to 6 months
measurement of calcemia (mg/dl)
Up to 6 months
Search for secondary cause of hyperparathyroidism (1): vit D deficiency
Time Frame: Up to 6 months (where indicated)
measurement of plasma 25(OH)D (ng/ml)
Up to 6 months (where indicated)
Search for secondary cause of hyperparathyroidism (2): renal failure
Time Frame: Up to 6 months
measurement of plasma creatinine (mg/dl)
Up to 6 months
Prevalence of thyroid nodules
Time Frame: Up to 6 months
Thyroid ultrasound
Up to 6 months
Prevalence of other endocrine and non-endocrine neoplasia (1)
Time Frame: Up to 6 months
Report of any neoplasia before the diagnosis of PiT
Up to 6 months
Prevalence of other endocrine and non-endocrine neoplasia (2)
Time Frame: Up to 6 months
Report of any neoplasia diagnosed during the follow-up of PiT
Up to 6 months
Familial setting (1)
Time Frame: Up to 6 months
Report of any available information concerning familiarity for PiT
Up to 6 months
Familial setting (2)
Time Frame: up to 6 months
Familiarity for any associated neoplasia
up to 6 months

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Genetics (1) familial forms of PiT
Time Frame: up to 15 months
AIP gene sequencing upon genetic counselling
up to 15 months
Genetics (2) familial PiT and/or association with HPT
Time Frame: up to 15 months
MEN1 sequencing upon genetic counselling
up to 15 months
Genetics (3) any other clinical suspicion for MEN1
Time Frame: up to 15 months
MEN1 gene sequencing upon genetic counselling
up to 15 months
Genetics (4) any other clinical suspicion of inherited neoplasia syndrome
Time Frame: up to 15 months
genetic counselling for appropriate gene sequencing
up to 15 months

Collaborators and Investigators

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

Sponsor

Investigators

  • Principal Investigator: Marie-Lise Jaffrain-Rea, MD, Neuromed IRCCS, Pozzilli (IS), Italy

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 (Actual)

June 15, 2019

Primary Completion (Anticipated)

November 30, 2021

Study Completion (Anticipated)

February 28, 2022

Study Registration Dates

First Submitted

May 25, 2019

First Submitted That Met QC Criteria

May 31, 2019

First Posted (Actual)

June 4, 2019

Study Record Updates

Last Update Posted (Actual)

September 8, 2021

Last Update Submitted That Met QC Criteria

August 31, 2021

Last Verified

August 1, 2021

More Information

Terms related to this study

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

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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