2026 data ClinicalTrials.gov official source

Conditions: H

Compiled by PlainTrial Editorial, Clinical Trial Intelligence Editorial Team · January 1, 2026

Every condition beginning with H that has a registered US clinical trial, with how many studies cover each.

1,716 conditions starting with "H"

Showing 1,351–1,400 of 1,716

Condition	Trials	Recruiting
Human Milk	1	1
Human Milk Feeding	1	1
Human Milk Fortification	1	1
Human Milk Microbiome	1	1
Human Milk Nutrition	1	1
Human Milk, Breast Milk	1	1
Human Olfactory Amygdala	1	1
Human Olfactory Amygdala Function	1	1
Human Papilloma Virus	27	10
Human Papilloma Virus (HPV)	3	3
Human Papilloma Virus Infection	5	-
Human Papilloma Virus Infection Type 16	1	-
Human Papilloma Virus Infection Type 18	1	-
Human Papilloma Virus Vaccine	2	2
Human Papilloma Virus Vaccine Hesitancy	1	-
Human Papillomavirus	13	4
Human Papillomavirus (HPV)	1	-
Human Papillomavirus (HPV)-Positive Oropharyngeal Cancer	1	-
Human Papillomavirus Infection	18	4
Human Papillomavirus Positive Anal Carcinoma	1	-
Human Papillomavirus Positive Cervical Carcinoma	1	-
Human Papillomavirus Positive Oropharyngeal Carcinoma	1	-
Human Papillomavirus Positive Oropharyngeal Squamous Cell Carcinoma	1	-
Human Papillomavirus Positive Penile Carcinoma	1	-
Human Papillomavirus Positive Vulvar Carcinoma	1	-
Human Papillomavirus Type 16	1	1
Human Papillomavirus Vaccination	3	1
Human Papillomavirus Vaccines	1	-
Human Papillomavirus Viruses	2	1
Human Papillomavirus-Independent Cervical Adenocarcinoma, Clear Cell-Type	1	1
Human Papillomavirus-Negative Neck Squamous Cell Carcinoma	1	1
Human Papillomavirus-Related Anal Squamous Cell Carcinoma	1	-
Human Papillomavirus-Related Carcinoma	8	2
Human Papillomavirus-Related Cervical Carcinoma	1	-
Human Papillomavirus-Related Cervical Squamous Cell Carcinoma	2	-
Human Papillomavirus-Related Malignant Neoplasm	1	-
Human Papillomavirus-Related Neck Squamous Cell Carcinoma of Unknown Primary	1	1
Human Papillomavirus-Related Oropharyngeal Squamous Cell Carcinoma	1	1
Human Papillomavirus-Related Squamous Cell Carcinoma of the Penis	1	-
Human Papillomavirus-Related Vulvar Squamous Cell Carcinoma	2	-
Human Papiloma Virus Vaccine	1	-
Human Parainfluenza Virus Type 3	1	1
Human Performance	1	1
Human Physiology	1	1
Human T-Lymphotrophic Virus Type I and/or Type II	1	-
Human T-lymphotropic Virus 1	1	-
Human T-lymphotropic Virus 2	1	-
Human Volunteers	1	-
Human-animal Interaction	1	-
Humans	1	1

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Data sourced from official public datasets. See our methodology for details.

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