Conditions

Continuously updated · last reviewed Oct 19, 2026

Each page covers one condition properly: what it actually is and what it feels like, what causes it, how common it really is and in whom, and how it's diagnosed — followed by the specific variants with a replicated link to it, and, where the research supports it, how genetics can change the way a medicine behaves.

Written in two registers so one page serves both readers: plain language first, then a clinical detail section with the precise terminology, effect sizes and diagnostic thresholds. Every claim is sourced from freely-available published research and cited on the page, so you can check us — or hand the page to your doctor. 385 conditions so far, growing continuously, and free to reuse with attribution (CC BY 4.0).

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All 385 Autoimmune 33 Behavioural 13 Cancer 37 Cardiovascular 33 Condition 25 Dental 3 Dermatologic 8 Dermatological 1 Developmental 5 Digestive 19 Endocrine 6 Hematologic 10 Immunologic 7 Infection 1 Infectious 8 Inherited 6 Metabolic 15 Musculoskeletal 18 Neurological 18 Nutritional 1 Ophthalmic 10 Pharmacogenomic 17 Pharmacogenomics 4 Pregnancy 3 Reproductive 4 Respiratory 10 Sensory 5 Trait 53 Urinary 1 Urological 11

10 results in Hematologic

Hematologic

Pernicious Anemia

Pernicious Anemia, as genome-wide studies have reported it: 5 positions from 1 study, the largest recording 1,429 cases and 570,568 controls (African American or Afro-Caribbean ancestry, European ancestry). Every figure comes from the studies themselves, gathered by code from the GWAS Catalog and updated as the records grow.

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Hematologic

Folate-deficiency Anemia

Folate-deficiency Anemia, as genome-wide studies have reported it: 6 positions from 1 study, the largest recording 1,353 cases and 570,069 controls (African American or Afro-Caribbean ancestry, European ancestry). Built from the GWAS Catalog's records and rebuilt when a new position is reported; the figures are the studies'.

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Hematologic

Acquired Hemolytic Anemias

Acquired Hemolytic Anemias, as genome-wide studies have reported it: 10 positions from 1 study, the largest recording 960 cases and 571,231 controls (African American or Afro-Caribbean ancestry, European ancestry). Built from the GWAS Catalog's records and rebuilt when a new position is reported; the figures are the studies'.

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Hematologic

Immunoglobulin Light Chain (AL) Amyloidosis

Immunoglobulin Light Chain (AL) Amyloidosis, as genome-wide studies have reported it: 4 positions from 2 studies, the largest recording 1,229 cases, 7,526 controls. Built from the GWAS Catalog's records and rebuilt when a new position is reported; the figures are the studies'.

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Hematologic

Erdheim-Chester Disease

A rare histiocytosis whose first-ever genome-wide study found one germline risk variant near SETBP1 — a gene otherwise known for its role in clonal blood-cell mutation.

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Hematologic

Monocyte Count

How many monocytes — the white blood cells that become macrophages, the immune system's general-purpose cleanup and signalling cells — circulate in a person's blood. A measurement rather than a disease, the same way this site's C-reactive protein page is: a number a blood test reports, with some of its variation explained by common genetics.

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Hematologic

Haemolysis Severity in Sickle Cell Anaemia

How fast red blood cells break down in sickle cell anaemia varies between patients in ways that matter clinically. This variant reached genome-wide significance in a study whose headline finding was elsewhere (NPRL3) — its own nearest genes are olfactory receptors with no established link to blood biology, stated plainly rather than dressed up with an invented mechanism.

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Hematologic

Blood Cell Counts

The numbers on a routine blood test are strongly heritable, and one of them turned into a medicine: BCL11A was found because it moved fetal haemoglobin, and silencing it now treats sickle cell disease. The same data also warns that several of these numbers mark disease risk without causing it.

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Hematologic

Duffy-Null Phenotype and Benign Ethnic Neutropenia

A promoter variant that silences the Duffy antigen on red cells, protecting against Plasmodium vivax malaria and causing a normal, lower neutrophil count that is routinely and wrongly treated as disease in people of African ancestry.

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Hematologic

Factor V Leiden Thrombophilia

A common inherited change in the F5 gene that makes blood slightly slower to switch off clotting, raising the risk of deep vein thrombosis and pulmonary embolism. Most carriers never have a clot.

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Questions about conditions on this site

What counts as a "condition" page on this site?

One diagnosed condition or measurable trait covered properly: what it actually is, what causes it, how common it is, how it is diagnosed, and the specific variants with a replicated link to it — every claim sourced from published research.

Does MyGeneLog™ diagnose any of these conditions?

No. Every page here is informational, not a diagnosis. A result should be discussed with a doctor or a licensed genetic counselor, never acted on alone.

Why do some entries say "Trait" instead of a disease category?

Because they are not disorders. Height, ABO blood group and a handful of others describe a measurable characteristic with nothing to diagnose — "Trait" says so plainly instead of implying a disease that is not one.

How is a variant linked to a condition page?

Only after a replicated association in published research, verified against the primary study rather than a gene name or a marketing claim — the same discipline the variant pages themselves follow.