Get help now — free helplines

You can call any of these for free. You do not need a diagnosis, an appointment, or a crisis to call — questions and plain exhaustion are reasons enough.

  • Alzheimer's Association 24/7 Helpline 800-272-3900 24 hours a day, 365 days a year Free, confidential support and information for people with dementia, caregivers, families and the public. Master's-level clinicians. Also Spanish.
  • 988 Suicide & Crisis Lifeline 988 24/7 Call or text 988, or chat at 988lifeline.org. For anyone in emotional distress or a mental-health crisis, including caregivers.
  • Alzheimer's Foundation of America (AFA) Helpline 866-232-8484 9:00 am - 9:00 pm ET, seven days a week Licensed social workers providing support, info and referrals. Also text message and web chat. Text: 646-586-5283

In a medical emergency, call 911. More numbers, and what each line does, on the help page.

This page is alzhub.org's plain-English summary of a published study, not the paper itself. It is generated from the record we hold for this study, sourced and linked below — check the original for the full text and methods.

✓ Peer-reviewed alzhub usefulness score 40 out of 100. Disparities

Topic: Risk, prevention and care in population studies

A significant minority of degenerative dementias lack distinctive inclusion bodies, plagues or tangles on pathological examination. Half of these cases have a positive family history of dementia. We have studied the largest published family with such a dementia and mapped the disease locus to a 12 cM region of chromosome 3 spanning the centromere. Haplotype analysis demonstrates a common region shared between all affected individuals between the markers D3S1284 and D3S1603. Like a number of other late onset neurodegenerative diseases, the disease presents at an earlier age when paternally inherited.

Cite this study APA, Vancouver, BibTeX · download .bib or .ris

APA 7th

Brown, J., Ashworth, A., Gydesen, S., Sorensen, A., Rossor, M., Hardy, J., et al. (1995). Familial non-specific dementia maps to chromosome 3. Human molecular genetics. https://doi.org/10.1093/hmg/4.9.1625

Vancouver

Brown J, Ashworth A, Gydesen S, Sorensen A, Rossor M, Hardy J, et al. Familial non-specific dementia maps to chromosome 3. Human molecular genetics. 1995. doi:10.1093/hmg/4.9.1625. PMID: 8541850.

BibTeX

@article{brown1995-8541850,
  author  = {Brown, J. and Ashworth, A. and Gydesen, S. and Sorensen, A. and Rossor, M. and Hardy, J. and Collinge, J.},
  title   = {{Familial non-specific dementia maps to chromosome 3}},
  journal = {Human molecular genetics},
  year    = {1995},
  doi     = {10.1093/hmg/4.9.1625},
  pmid    = {8541850},
  url     = {https://doi.org/10.1093/hmg/4.9.1625}
}

Built from the record alzhub holds for this paper, not looked up. Volume, issue and page numbers are not held in the record. The record names 7 authors; APA and Vancouver show the first six, BibTeX and the downloads carry all of them. Check the citation against the original before you use it.

Key findings

Why it matters

In the largest published family with a non-specific degenerative dementia lacking plaques or tangles, the disease was mapped to a region of chromosome 3. This is a genetic finding in one family and does not yet offer a treatment, cure, or prevention.

Study details

How this study scored 40/100
How this study's score is builtJournal tier 7 of 10; Journal's citation record 3 of 4; Study design 0 of 12; Strength of evidence 1 of 5; Peer-review validation 10 of 10; How recent 1 of 5; Sample size 0 of 4; Effect reported 0 of 3; Studied in people 0 of 3; Randomised / blinded 0 of 2; Times cited 5 of 7; Citations per year 2 of 5; Impact for its field and year 3 of 6; Cited by studies here 2 of 6; Still being cited 0 of 4; Senior author's track record left out, no data; Institution's track record 1 of 3; Multi-centre collaboration 1 of 3; Indexed in PubMed 2 of 2; Free to read 0 of 2. 38 of the 96 points it could be judged on, which is 40 of 100. Total 40 of 100.38 of the 96 points we could judge = 40 of 100

Published in a peer-reviewed journal. Scored zero for study design, sample size, effect reported, studied in people and randomised / blinded because the record does not state it. We have no data on senior author's track record, so that was left out: it earned 38 of the 96 points we could judge it on, which is 40 out of 100.

ComponentPointsWhy
Journal tier 7 / 10 Tier 3 — peer-reviewed journal (Human molecular genetics)
Journal's citation record 3 / 4 Human Molecular Genetics: journal h-index 356 (OpenAlex, 2026-10-29)
Study design 0 / 12 No study design recorded — scores zero, not guessed (not stated in the record — scored 0)
Strength of evidence 1 / 5 Rated “low” in our summary
Peer-review validation 10 / 10 Peer-reviewed. Published as an article in a named peer-reviewed journal.
How recent 1 / 5 1995 — older than 20 years, still counted
Sample size 0 / 4 Participant count not stated — scores zero (not stated in the record — scored 0)
Effect reported 0 / 3 No effect size reported — scores zero (not stated in the record — scored 0)
Studied in people 0 / 3 Not stated whether this was studied in people — scores zero (not stated in the record — scored 0)
Randomised / blinded 0 / 2 No randomisation or blinding stated — scores zero (not stated in the record — scored 0)
Times cited 5 / 7 Cited 163 times (OpenAlex, 2026-10-10)
Citations per year 2 / 5 4.9 citations a year over 33 year(s) since 1995
Impact for its field and year 3 / 6 Cited 7.9× the average for papers of its field and year (OpenAlex FWCI)
Cited by studies here 2 / 6 Cited by 7 other studies in this library
Still being cited 0 / 4 Cited 0 times in 2024–2026 (2026 still in progress; OpenAlex)
Senior author's track record — / 4 OpenAlex's profile for last-listed author John Collinge holds only 5 work(s), too few to judge a track record — left out of this score
Institution's track record 1 / 3 University of Copenhagen: institution h-index 1,378 (OpenAlex)
Multi-centre collaboration 1 / 3 OpenAlex lists 3 institution(s) in 3 countries
Indexed in PubMed 2 / 2 Indexed in PubMed (PMID 8541850)
Free to read 0 / 2 Behind a paywall — scores zero
Points 38 / 96 Scored on 19 of 20 parts. We have no data for the rest, so they are left out: 38 of the 96 points we could judge it on is 40 out of 100.
Total 40 / 100 —

What each of these 20 components measures, and what this score is not →

Read the original

May need a subscription OpenAlex found no free copy of the full text (checked 6 Feb 1020), so the publisher may charge for it. The PubMed abstract is free.

Later studies that cite this one

7 studies in the alzhub library list this one in their references.

Related studies in Disparities

Also tagged “prevalence”

1,224 studies in the library carry the topic tag “prevalence”; these are this study's neighbours in a fixed, alphabetical-by-hash tour of them, not the closest in content. All 1,224 tagged studies.

Similar studies

More on Disparities

See all studies in Disparities →