Inherited Diseases, Caregiving, and Social Networks

NCT ID: NCT01498263

Last Updated: 2026-02-05

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

Get a concise snapshot of the trial, including recruitment status, study phase, enrollment targets, and key timeline milestones.

Recruitment Status

COMPLETED

Total Enrollment

682 participants

Study Classification

OBSERVATIONAL

Study Start Date

2012-01-09

Brief Summary

Review the sponsor-provided synopsis that highlights what the study is about and why it is being conducted.

Approximately 66 million informal caregivers care for someone who is ill, disabled, or aged. These caregivers experience significant distress associated with caregiving, which may be particularly salient in the context of inherited conditions. Previous studies have not examined caregiving from a network perspective, nor have they considered how cognitive and emotional responses, such as caregivers worry for themselves and relatives acquiring the disease or guilt related to the genetic etiology of their child s illness, as possible stressors; the current project fills this literature gap.

Caregiving processes may vary across type of illness and the life course. In illnesses that impact children, parents and grandparents may take on caregiving roles whereas in conditions that impact adults, spouses and adult children may provide care. Caregivers must adapt to the strain of caring for their affected relatives and this adaptation may differ depending on caregiver roles. The caregiver s support network may influence adaptation, impacting the health and well-being of patients, their caregivers, and other relatives.

This project, comprised of 5 substudies, will examine social contexts surrounding families involved in caring for individuals with chronic inherited conditions from a relational perspective. Surveys and interviews will assess participants cognitions and emotions about the disease, caregiving burden and caregiving/support network systems. In addition, biomarkers will be considered in 2 substudies to examine how caregiving roles and expectations impact health among caregivers. As part of our current inquiry, we have

developed an assessment tool aimed at understanding caregiver experiences related to dietary practices in the context of metabolic conditions. To evaluate the psychometric properties of this scale, we propose a fifth substudy under the current protocol.

We aim to recruit at least 5550 participants through residential/daycare centers, advocacy groups, and the NIH Clinical Center. We will recruit formal caregivers, multiple biological and non-biological adult relatives of affected individuals and typically developing controls to construct and evaluate caregiving/support network systems. This project will use a social network framework to develop and adapt common measures of caregiving roles to evaluate burden, perceptual bias, and unmet expectations in caregiving. The psychometric properties of these new measures, characteristics of family caregiving and support networks, and how these network characteristics are associated with caregiving strain and well-being, including biomarkers of physical health, will be investigated. The moderating role of family members cognitions and emotions and disease context will be considered. Findings will guide future research to develop network-based interventions promoting positive adaptation to the presence of inherited conditions in families through improved social environments and coping skills....

Detailed Description

Dive into the extended narrative that explains the scientific background, objectives, and procedures in greater depth.

Approximately 66 million informal caregivers care for someone who is ill, disabled, or aged. These caregivers experience significant distress associated with caregiving, which may be particularly salient in the context of inherited conditions. Previous studies have not examined caregiving from a network perspective, nor have they considered how cognitive and emotional responses, such as caregivers worry for themselves and relatives acquiring the disease or guilt related to the genetic etiology of their child s illness, as possible stressors; the current project fills this literature gap.

Caregiving processes may vary across type of illness and the life course. In illnesses that impact children, parents and grandparents may take on caregiving roles whereas in conditions that impact adults, spouses and adult children may provide care. Caregivers must adapt to the strain of caring for their affected relatives and this adaptation may differ depending on caregiver roles. The caregiver s support network may influence adaptation, impacting the health and well-being of patients, their caregivers, and other relatives.

This project, comprised of 5 substudies, will examine social contexts surrounding families involved in caring for individuals with chronic inherited conditions from a relational perspective. Surveys and interviews will assess participants cognitions and emotions about the disease, caregiving burden and caregiving/support network systems. In addition, biomarkers will be considered in 2 substudies to examine how caregiving roles and expectations impact health among caregivers. As part of our current inquiry, we have developed an assessment tool aimed at understanding caregiver experiences related to dietary practices in the context of metabolic conditions. To evaluate the psychometric properties of this scale, we propose a fifth substudy under the current protocol.

We aim to recruit at least 5550 participants through residential/daycare centers, advocacy groups, and the NIH Clinical Center. We will recruit formal caregivers, multiple biological and non-biological adult relatives of affected individuals and typically developing controls to construct and evaluate caregiving/support network systems. This project will use a social network framework to develop and adapt common measures of caregiving roles to evaluate burden, perceptual bias, and unmet expectations in caregiving. The psychometric properties of these new measures, characteristics of family caregiving and support networks, and how these network characteristics are associated with caregiving strain and well-being, including biomarkers of physical health, will be investigated. The moderating role of family members cognitions and emotions and disease context will be considered. Findings will guide future research to develop network-based interventions promoting positive adaptation to the presence of inherited conditions in families through improved social environments and coping skills.

Conditions

See the medical conditions and disease areas that this research is targeting or investigating.

Undiagnosed Disease Healthy Volunteer (Adult With Typically Developing Child) Inherited Neurodegenerative Disorders Inherited Metabolic Disorders (Inborn Errors of Metabolism) Alzheimer's Disease and Related Dementias

Study Design

Understand how the trial is structured, including allocation methods, masking strategies, primary purpose, and other design elements.

Observational Model Type

FAMILY_BASED

Study Time Perspective

CROSS_SECTIONAL

Study Groups

Review each arm or cohort in the study, along with the interventions and objectives associated with them.

Alzheimers related dementias (family)

Enrollment was open to family members of persons diagnosed with Alzheimers (/related dementia) in specific communities around Memphis, TN.

No interventions assigned to this group

Inherited inflammatory condition (family)

Enrollment open to family members of persons diagnosed with inherited inflammatory conditions. Participation at NIH or remote (internet/phone); request referral of family for remote participation.

No interventions assigned to this group

Inherited metabolic conditions (family)

Enrolls family members of persons diagnosed with inborn errors of metabolism / mitochondrial disorders. Study at NIH or remote (internet/phone); request family-referrals for remote participation.

No interventions assigned to this group

Inherited neurodegenerative disorders (family)

Open to family members of persons diagnosed with genetically-defined neurodegenerative conditions. Study at NIH or (internet/phone); request referral of family members for remote participation.

No interventions assigned to this group

Typically developing (family) = Healthy Volunteers

Open to parents of typically-developing child/ren \<18yrs (\*when age-matched child is full-time resident of parent's home). Study at NIH; request family-referrals for remote participation.

No interventions assigned to this group

Undiagnosed conditions (family)

Enrollment open to family members referred in from the Undiagnosed Disease Network. Participation at NIH or remote (internet/phone); request referral of family members for remote participation

No interventions assigned to this group

Eligibility Criteria

Check the participation requirements, including inclusion and exclusion rules, age limits, and whether healthy volunteers are accepted.

Inclusion Criteria

* Adult family members of the individuals affected by an inherited disease (e.g. Alzheimer s disease, inborn errors of metabolism and mitochondrial disease, lysosomal storage disorder, genetic neurodegenerative disorder, undiagnosed diseases, and inherited

inflammatory conditions) OR

* Informal caregivers of the affected individual OR
* Caregivers family members OR
* Formal caregivers who are identified as part of patients caregiving networks will be eligible for recruitment in the study OR
* For the control group in Substudy 2, adult family members of normally developing children, informal caregivers, caregivers family members and formal caregivers who are identified as part of the child s caregiving network will be eligible for recruitment in the study.

(For better matching across groups: in the Healthy Volunteer controls, the normally developing focus child must live in the parent/caregiver household on a full-time basis.)

* Participants are eligible for biospecimen collection in Substudies 3 only if two parents/caregivers are present in the household, eligible, and willing to provide biospecimens.
* Fluency in English

Exclusion Criteria

* Those who are unable to complete the survey and interviews
* Affected individuals/Patients with condition being studied
* Individuals under the age of 18
* Those who have fever or signs of acute infection on the collection day, have been hospitalized in the past 3 months, and women who are currently pregnant or nursing will not be eligible for the biospecimen collection portion of Substudies 2 and 3 but will be eligible for the survey/interview portion of the substudies.
* Control group individuals will be excluded if they serve as a caregiver for anyone in their family affected by any major medical condition.
* Staff of NHGRI (National Human Genome Research Institute)
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

Meet the organizations funding or collaborating on the study and learn about their roles.

National Human Genome Research Institute (NHGRI)

NIH

Sponsor Role lead

Responsible Party

Identify the individual or organization who holds primary responsibility for the study information submitted to regulators.

Responsibility Role SPONSOR

Principal Investigators

Learn about the lead researchers overseeing the trial and their institutional affiliations.

Laura M Koehly, Ph.D.

Role: PRINCIPAL_INVESTIGATOR

National Human Genome Research Institute (NHGRI)

Locations

Explore where the study is taking place and check the recruitment status at each participating site.

National Institutes of Health Clinical Center

Bethesda, Maryland, United States

Site Status

University of Memphis

Memphis, Tennessee, United States

Site Status

Countries

Review the countries where the study has at least one active or historical site.

United States

References

Explore related publications, articles, or registry entries linked to this study.

Zajdel M, Davidson H, Lea D, Koehly LM. Links of we-talk to caregiver social network systems and health. J Fam Psychol. 2022 Dec;36(8):1386-1396. doi: 10.1037/fam0001013. Epub 2022 Aug 4.

Reference Type DERIVED
PMID: 35925717 (View on PubMed)

Related Links

Access external resources that provide additional context or updates about the study.

Other Identifiers

Review additional registry numbers or institutional identifiers associated with this trial.

12-HG-0022

Identifier Type: -

Identifier Source: secondary_id

120022

Identifier Type: -

Identifier Source: org_study_id

More Related Trials

Additional clinical trials that may be relevant based on similarity analysis.

Inherited Reproductive Disorders
NCT01500447 RECRUITING