Whatever rare cancer type you have, you're welcome at RareCan.

Join our 1,500+ members and help us to accelerate research today

RareCan specialises in helping people with rarer forms of cancer.

This means we can help you if you have been diagnosed with a cancer that falls outside the ‘big four’ (lung, bowl, breast, prostate cancers). Even if you do have a ‘big four’ cancer type, there are sub-types of these more common cancers that are considered to be rare. If you are not sure, please do sign up and we will be able to guide you. You can also browse our A to Z of rare cancers below.

A to Z of rare and less common cancers

The list below is not exhaustive and it is a work in progress – we aim to add more cancers as time goes on. If you can’t see your cancer type listed here, please register and let us know. 

CANCER TYPENUMBER OF TRIALS
Total Clinical Trials648
Acute lymphocytic/lymphoblastic leukaemia2
Acute lymphocytic/lymphoblastic leukaemia; Chronic lymphocytic leukaemia; Immune and blood1
Acute lymphocytic/lymphoblastic leukaemia; Immune and blood2
Acute myeloid leukaemia (AML)3
Acute myeloid leukaemia (AML); Acute lymphocytic/lymphoblastic leukaemia; Immune and blood2
Acute myeloid leukaemia (AML); Immune and blood11
Acute myeloid leukaemia (AML); Neuroblastoma and ganglioneuroblastoma; Multiple systems1
Acute myeloid leukaemia (AML); Other myelodysplastic syndrome; Myelodysplastic syndrome with 5q syndrome1
Acute myeloid leukaemia (AML); Other myelodysplastic syndrome; Myelodysplastic syndrome with 5q syndrome; Chronic myelomonocytic leukaemia; Immune and blood1
Acute myeloid leukaemia (AML); Other myelodysplastic syndrome; Myelodysplastic syndrome with 5q syndrome; Immune and blood2
All myeloproliferative neoplasms2
All myeloproliferative neoplasms; Primary myelofibrosis2
All types B-cell malignancy1
All types B-cell malignancy; Immune and blood1
All types cervical cancer2
All types cervical cancer; All types ovarian cancer; All types endometrial carcinoma; Primary peritoneal cancer; Adenocarcinoma with variants of fallopian tube1
All types cervical cancer; All types ovarian cancer; All types of bladder cancer; All types stomach (gastric) cancer; All types of pancreatic cancer; Squamous cell carcinoma with variants of oesophagus; HER2 negative breast cancer; Squamous cell carcinoma of the head and neck; Adenocarcinoma with variants of oesophagus; Non small cell lung cancer (NSCLC); Squamous cell carcinoma of skin1
All types cervical cancer; All types ovarian cancer; All types of colorectal cancer; All types stomach (gastric) cancer; All types of pancreatic cancer; All types endometrial carcinoma; HER2 negative breast cancer; Oesophageal Cancer; Pseudomyxoma peritonei; Non small cell lung cancer (NSCLC); Mucinous cystadenocarcinoma of the appendix; Mucinous Adenocarcinoma of the Appendix1
All types cervical cancer; All types ovarian cancer; All types stomach (gastric) cancer; Gastrooesophageal cancer; All types endometrial carcinoma; All types of testicular cancer; Non small cell lung cancer (NSCLC)1
All types endometrial carcinoma2
All types lymphoma1
All types lymphoma; Immune and blood1
All types melanoma18
All types melanoma; All types lymphoma; All types of colorectal cancer; All types endometrial carcinoma1
All types melanoma; All types of breast cancer; Gliobastoma multiforme; All types of prostate cancer1
All types melanoma; Hepatocellular carcinoma of liver and IBT; All types of colorectal cancer1
All types melanoma; Mantle cell lymphoma; Diffuse and follicular B lymphoma; Chronic lymphocytic leukaemia; Non small cell lung cancer (NSCLC)1
All types melanoma; Non small cell lung cancer (NSCLC)2
All types melanoma; Renal cell carcinoma1
All types melanoma; Skin, hair, nails1
All types melanoma; Squamous cell carcinoma of the head and neck; Squamous cell carcinoma of the head and neck; Non small cell lung cancer (NSCLC)1
All types melanoma; Squamous cell carcinoma with variants of oesophagus; Non small cell lung cancer (NSCLC)1
All types melanoma; Triple negative breast cancer; All types cervical cancer; All types ovarian cancer; All types of bladder cancer; All types stomach (gastric) cancer; Gastrooesophageal cancer; Squamous cell carcinoma of the head and neck; Hodgkin lymphoma; Diffuse large B-cell lymphoma; Other T cell lymphomas and NK cell neoplasms; Non small cell lung cancer (NSCLC)1
All types melanoma; Triple negative breast cancer; All types cervical cancer; All types ovarian cancer; All types of urothelial cancer; All types of colorectal cancer; All types stomach (gastric) cancer; Gastrooesophageal cancer; Mesothelioma of pleura and pericardium; Squamous cell carcinoma of the head and neck; Diffuse large B-cell lymphoma; Richter Transformation Lymphoma; All types of prostate cancer; Non small cell lung cancer (NSCLC)1
All types melanoma; Triple negative breast cancer; All types ovarian cancer; Squamous cell carcinoma with variants of oesophagus; Squamous cell carcinoma of the head and neck; Non small cell lung cancer (NSCLC)1
All types melanoma; Triple negative breast cancer; Hepatocellular carcinoma of liver and IBT; Multiple systems; All types cervical cancer; All types ovarian cancer; All types of bladder cancer; All types of colorectal cancer; All types stomach (gastric) cancer; All types of pancreatic cancer; All types endometrial carcinoma; Squamous cell carcinoma of the head and neck; Oesophageal Cancer; Non small cell lung cancer (NSCLC)1
All types melanoma; Triple negative breast cancer; Multiple systems; Mesothelioma of pleura and pericardium; Renal cell carcinoma; Stomach Cancer; All types endometrial carcinoma; Squamous cell carcinoma of the head and neck; Hodgkin lymphoma; Oesophageal Cancer; Adenocarcinoma with variants of pelvis, ureter and urethra; Squamous cell carcinoma with variants of pelvis, ureter and urethra; Non small cell lung cancer (NSCLC); Head and neck cancer (NOS); Adenocarcinoma of the Colon1
All types of B-cell non-Hodgkin lymphoma6
All types of B-cell non-Hodgkin lymphoma; Chronic lymphocytic leukaemia2
All types of B-cell non-Hodgkin lymphoma; Chronic lymphocytic leukaemia; Immune and blood1
All types of B-cell non-Hodgkin lymphoma; Chronic lymphocytic leukaemia; Waldenstrom Macroglobulinemia1
All types of B-cell non-Hodgkin lymphoma; Immune and blood3
All types of B-cell non-Hodgkin lymphoma; Mantle cell lymphoma; Immune and blood1
All types of bile duct malignancy1
All types of bladder cancer10
All types of bladder cancer; Non small cell lung cancer (NSCLC); Head and neck cancer (NOS)1
All types of bladder cancer; Urinary1
All types of breast cancer9
All types of breast cancer; All types of B-cell non-Hodgkin lymphoma; Immune and blood1
All types of breast cancer; All types of colorectal cancer; All types stomach (gastric) cancer; All types of prostate cancer1
All types of breast cancer; All types of colorectal cancer; Renal cell carcinoma; All types of prostate cancer1
All types of breast cancer; Breast18
All types of breast cancer; Liposarcoma; Adenocarcinoma of Lung; All types of prostate cancer1
All types of breast cancer; Male reproductive; All types of prostate cancer1
All types of breast cancer; Multiple systems1
All types of breast cancer; Multiple systems; All types ovarian cancer; All types endometrial carcinoma; All types of bile duct malignancy1
All types of breast cancer; Multiple systems; All types ovarian cancer; All types stomach (gastric) cancer; Squamous cell carcinoma of the head and neck; Non small cell lung cancer (NSCLC)1
All types of breast cancer; Respiratory; Non small cell lung cancer (NSCLC)1
All types of breast cancer; Triple negative breast cancer1
All types of breast cancer; Triple negative breast cancer; All types ovarian cancer; All types endometrial carcinoma; All types endometrial carcinoma; HER2 negative breast cancer; Cholangiocarcinoma of IBT; Non small cell lung cancer (NSCLC); Adenoid cystic carcinoma of corpus uteri1
All types of breast cancer; Triple negative breast cancer; HER2 positive breast cancer1
All types of colorectal cancer18
All types of colorectal cancer; All types of pancreatic cancer; Squamous cell carcinoma of the head and neck; Non small cell lung cancer (NSCLC)2
All types of colorectal cancer; Digestive1
All types of colorectal cancer; Non small cell lung cancer (NSCLC)1
All types of glioma3
All types of haematological malignancy1
All types of lung cancer1
All types of lung cancer; All types of breast cancer; All types cervical cancer; All types ovarian cancer; All types of bladder cancer; All types of colorectal cancer; All types stomach (gastric) cancer; All types of pancreatic cancer; All types endometrial carcinoma; All types of bile duct malignancy; All types of prostate cancer1
All types of lung cancer; Malignant thymoma1
All types of lung cancer; Respiratory1
All types of neuroendocrine tumours3
All types of pancreatic cancer3
All types of prostate cancer29
All types of skin cancer1
All types of soft tissue sarcoma3
All types of soft tissue sarcoma; All types of colorectal cancer; Non small cell lung cancer (NSCLC)1
All types of soft tissue sarcoma; All types of lung cancer; All types cervical cancer; Mesothelioma of peritoneum and tunica vaginalis; All types of bladder cancer; All types of colorectal cancer; All types stomach (gastric) cancer; All types of pancreatic cancer; Mesothelioma of pleura and pericardium; Pheochromocytoma; Renal cell carcinoma; All types of prostate cancer1
All types of soft tissue sarcoma; Carcinomas of thyroid gland (medullary carcinoma included); Papillary adenocarcinoma of the thyroid; Fibrosarcoma1
All types of solid tumour49
All types of solid tumour; All types of haematological malignancy3
All types of solid tumour; Immune and blood1
All types of solid tumour; Multiple systems24
All types of squamous cell carcinoma1
All types of upper GI tract cancers (oesophageal, stomach, small bowel, pancreatic, liver cancer and cancers of the biliary system.); Digestive1
All types of urothelial cancer6
All types ovarian cancer9
All types ovarian cancer; All types of colorectal cancer; All types endometrial carcinoma; Adenocarcinoma with variants of pelvis, ureter and urethra; All types of bile duct malignancy; All types of prostate cancer1
All types ovarian cancer; All types of prostate cancer; Non small cell lung cancer (NSCLC)1
All types ovarian cancer; Female reproductive1
All types ovarian cancer; Female reproductive; Germ cell tumour of ovary1
All types ovarian cancer; Mesothelioma of pleura and pericardium; Female reproductive; Adenocarcinoma with variants of fallopian tube; Pseudomyxoma peritonei1
All types ovarian cancer; Non small cell lung cancer (NSCLC)1
All types ovarian cancer; Primary peritoneal cancer2
All types stomach (gastric) cancer4
All types stomach (gastric) cancer; Gastrooesophageal cancer4
All types stomach (gastric) cancer; Gastrooesophageal cancer; Adenocarcinoma with variants of oesophagus1
All types stomach (gastric) cancer; Gastrooesophageal cancer; HER2 positive breast cancer1
All types stomach (gastric) cancer; Oesophageal Cancer1
Breast; HER2 positive breast cancer1
Cancer of unknown primary; All types of soft tissue sarcoma; All types of breast cancer; All types ovarian cancer; All types of bladder cancer; All types of pancreatic cancer; Cholangiocarcinoma of IBT; Oesophageal Cancer; All types of prostate cancer; Non small cell lung cancer (NSCLC); Head and neck cancer (NOS)1
Carcinoma of adrenal gland; Endocrine1
Carcinomas of pituitary gland; Endocrine2
Carcinomas of thyroid gland (medullary carcinoma included); All types of solid tumour; All types of colorectal cancer; Non small cell lung cancer (NSCLC)1
Cholangiocarcinoma of IBT3
Chondrosarcoma1
Chronic lymphocytic leukaemia6
Chronic myeloid leukaemia2
Cutaneous T-cell lymphoma1
Desmoplastic small round cell tumour1
Diffuse and follicular B lymphoma4
Diffuse large B-cell lymphoma13
Digestive; Adenocarcinoma of the Colon1
Digestive; Adenocarcinoma with variants of oesophagus; Oesophageal Cancer1
Digestive; All types of bile duct malignancy1
Digestive; Stomach Cancer; Adenocarcinoma with variants of oesophagus; Oesophageal Cancer1
Ependymal tumours of CNS1
Epithelioid leiomyosarcoma1
Epithelioid leiomyosarcoma; Primary Central Nervous System Lymphoma; Post-transplant lymphoproliferative disease1
Epithelioid leiomyosarcoma; Retroperitoneal Sarcoma; Liposarcoma1
Epithelioid sarcoma; All types of soft tissue sarcoma; Multiple systems1
Extragonadal germ cell tumours; Malignant/Immature teratomas of ovary; Non-seminomatous testicular cancer; Germ cell tumour of ovary1
Female reproductive; Adenocarcinoma with variants of ovary; Clear cell adenocarcinoma of ovary1
Gastrooesophageal cancer1
Giant cell tumour of soft parts; Muscular-skeletal1
Gliobastoma multiforme7
Gliobastoma multiforme; All types of prostate cancer1
Gliobastoma multiforme; All types stomach (gastric) cancer; Gastrooesophageal cancer; Renal cell carcinoma; Non small cell lung cancer (NSCLC)1
Head and neck cancer (NOS)8
Hepatocellular carcinoma of liver and IBT7
Hepatocellular carcinoma of liver and IBT; Hepatoblastoma1
HER2 negative breast cancer7
HER2 positive breast cancer3
Hodgkin lymphoma4
Hodgkin lymphoma; All types of B-cell non-Hodgkin lymphoma1
Kaposi sarcoma1
Liposarcoma1
Liposarcoma; Synovial sarcoma1
All types of prostate cancer1
Mantle cell lymphoma3
Mantle cell lymphoma; Diffuse and follicular B lymphoma; Chronic lymphocytic leukaemia; Richter Transformation Lymphoma1
Mastocytosis2
Mastocytosis; Mast cell tumour; Immune and blood1
Merkel Cell Carcinoma; All types melanoma; Renal cell carcinoma; Non small cell lung cancer (NSCLC)1
Mesothelioma of peritoneum and tunica vaginalis; Mesothelioma of pleura and pericardium2
Mesothelioma of pleura and pericardium1
Multiple systems; All types of colorectal cancer; Stomach Cancer; Squamous cell carcinoma of the head and neck; Non small cell lung cancer (NSCLC)1
Multiple systems; All types ovarian cancer; All types of urothelial cancer; Non small cell lung cancer (NSCLC)1
Multiple systems; Mesothelioma of peritoneum and tunica vaginalis; Mesothelioma of pleura and pericardium; Diffuse large B-cell lymphoma; Other T cell lymphomas and NK cell neoplasms; All types of prostate cancer1
Muscular-skeletal1
Neuroblastoma and ganglioneuroblastoma4
Neurofibromatosis; All types of glioma1
Non small cell lung cancer (NSCLC)49
Non small cell lung cancer (NSCLC); Head and neck cancer (NOS)1
Other myelodysplastic syndrome; Myelodysplastic syndrome with 5q syndrome3
Other myelodysplastic syndrome; Myelodysplastic syndrome with 5q syndrome; Other myeloproliferative neoplasms1
Other T cell lymphomas and NK cell neoplasms1
Pancreatic neuroendocrine tumor; Endocrine; Neuroendocrine tumour- unspecified1
Pheochromocytoma; Pancreatic neuroendocrine tumor; Gastrointestinal stromal tumour1
Plasmacytoma/multiple myeloma (and heavy chain diseases)32
Plasmacytoma/multiple myeloma (and heavy chain diseases); Acute myeloid leukaemia (AML); Other myelodysplastic syndrome; Myelodysplastic syndrome with 5q syndrome; All types of B-cell non-Hodgkin lymphoma; Other T cell lymphomas and NK cell neoplasms1
Plasmacytoma/multiple myeloma (and heavy chain diseases); All types of lung cancer; All types ovarian cancer1
Plasmacytoma/multiple myeloma (and heavy chain diseases); Immune and blood3
Plasmacytoma/multiple myeloma (and heavy chain diseases); Mantle cell lymphoma; Diffuse large B-cell lymphoma; Chronic lymphocytic leukaemia; Waldenstrom Macroglobulinemia; Splenic/nodal marginal zone/extra nodal MALT type lymphoma1
Polycythaemia vera3
Polycythaemia vera; Essential thrombocythaemia; Immune and blood1
Post-transplant lymphoproliferative disease2
Primary Central Nervous System Lymphoma; Mantle cell lymphoma; Diffuse large B-cell lymphoma; Diffuse and follicular B lymphoma; Chronic lymphocytic leukaemia; Waldenstrom Macroglobulinemia; Splenic/nodal marginal zone/extra nodal MALT type lymphoma1
Primary myelofibrosis2
Primary myelofibrosis; Polycythaemia vera; Essential thrombocythaemia2
Primary myelofibrosis; Primary myelofibrosis; Polycythaemia vera1
Phyllodes Tumour1
Renal cell carcinoma10
Respiratory; Adenocarcinoma of Lung1
Respiratory; Non small cell lung cancer (NSCLC)5
Rhabdoid tumours; Neuroblastoma and ganglioneuroblastoma; Embryonal tumours of CNS; Rhabdomyosarcoma; All types of glioma; Ewing's family of tumours1
Rhabdomyosarcoma1
Skin, hair, nails; Gorlin syndrome1
Small cell lung cancer3
Squamous cell carcinoma of skin1
Squamous cell carcinoma of the head and neck14
Squamous cell carcinoma with variants of bladder; Squamous cell carcinoma with variants1
Squamous cell carcinoma with variants of oesophagus2
Squamous cell carcinoma with variants of oesophagus; Adenocarcinoma with variants of oesophagus1
Squamous cell carcinoma with variants of penis1
T-cell non-Hodgkin lymphoma; All types lymphoma1
Triple negative breast cancer3
Triple negative breast cancer; All types cervical cancer; Female reproductive1
Triple negative breast cancer; All types ovarian cancer; Renal cell carcinoma; Squamous cell carcinoma of the head and neck1
Triple negative breast cancer; Multiple systems; All types ovarian cancer; All types of bladder cancer; Non small cell lung cancer (NSCLC)1
Triple negative breast cancer; Multiple systems; All types ovarian cancer; All types of urothelial cancer; All types stomach (gastric) cancer; Non small cell lung cancer (NSCLC); Head and neck cancer (NOS)1
Tuberous sclerosis2
Waldenstrom Macroglobulinemia2

Can't see your cancer type on this list?

If your cancer isn’t listed but you think it should be, we would like to hear from you. Please let us know your rare cancer type by clicking the button below and completing the short forms that follow. We are continuously updating our list and it may just be that your rare cancer hasn’t been added yet.