Endo-ERN is a network connecting patients and healthcare providers across Europe, aiming to provide knowledge and resources for diagnosis and treatment of rare endocrine conditions.

Endo-ERN’s rare disease registries help to support better global scientific research and development. One of the main goals is to implement the patient voice at the core of research needs and the forming of guidelines.

Virtual consultations across national borders: expert care throughout Europe, no travel required.

Endo-ERN News

Participating Reference Centres

For Healthcare Professionals

Clinical Patient Management System (CPMS), a secure web-based application that supports the European Reference Networks in the diagnosis and treatment of rare or low-prevalence complex diseases or conditions across national borders, our multidisciplinary teams of experts are able to give virtual consultations to diagnose, suggest treatment or surgery, and then provide post-operative and transitional support.

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Access CPMS

Endocrine Conditions

For classification of endocrine conditions, there are eight main thematic groups (MTG) defined within Endo-ERN. These MTGs are organ and/or physiology based, cover care throughout the entire lifespan of patients and cover the total spectrum of congenital and acquired conditions.



Rare adrenal disorders comprise those with hormonal oversecretition and/or overgrowth and those with inappropriate low endocrine functionality. Oversecretion and tumour growth often requires surgical or targeted medical therapy, patients with adrenal insufficiency need hormonal replacement therapy.


Disorders of Calcium & Phosphate Homeostasis

Calcium and Phosphate Homeostasis is of major importance to a large number of hysiological processes thereby affecting several organ systems typically bone, muscles, kidney, brain with consequences on quality of life and risk of chronic disability.


Genetic disorders of Glucose & Homeostasis

For genetic disorders of glucose and insulin homeostasis 3 subthematic subgroups are defined: Insulin-resistance syndrome; Hyperinsulinism and other forms of hypoglycemia Rare diabetes mellitus.


Genetic Endocrine Tumour Syndromes

Multi-organ conditions that are dominantly inherited, and manifest throughout childhood and adult life. In recent years predictive testing has been introduced, with patients being identified in the preclinical state, and often in early childhood.


Growth & Genetic Obesity Syndromes

A group of imprinting disorders for which care have been well organised: Prader Willi Syndrome, Silver Russell Syndrome, and Beckwith Wiedemann Syndrome and a group of Growth hormone and IGF-I insensitivity including Laron and Noonan Syndrome, as well as other overgrowth and growth retardation syndromes.


Hypothalamic and Pituitary Conditions

Rare pituitary disorders are a group of various clinical syndromes with low prevalence (main groups 100-500 million, specific diseases/genetic disorders less than 1 million) requiring multidisciplinary and lifelong care because of the central endocrine function of the pituitary.


Sex Development & Maturation

This Main Thematic Group (MTG) is dedicated to the Disorders of sex development (DSD) and the Disorders of sex maturation (DSM). These are medical conditions involving the reproductive system in both sexes.



There are 3 subthematic groups for Thyriod: a) Rare Thyroid Hormone Signaling Disorders (causing defect in thyroid hormone signaling and action), b) congenital hypothyroidism (a rare disorder for which all newborns in the EU are screened immediately after birth) and hyperthyroidism, and c) non-metastatic thyroid carcinoma.

For Patients & Families

Access to rare disease expertise without the need to travel is a core ERN objective. Our ePAGs contribute to all Endo-ERN activities.

endo-ern patient pathway
Information video for patients and healthcare professionals

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