Why Science? | Cancer Science Institute of Singapore

Cancer cells acquire and select biological changes while interacting with normal tissue. Organ, cell lineage, mutations, treatment history and immune environment can create different disease behaviours.

Cancer research studies evolving cell populations rather than one uniform disease. Genetics, RNA, metabolism, immunity and tissue context can interact, so a result needs its cancer type, model and stage attached. The practical capability is cancer-systems literacy. Keep the question, method, controls, observation, uncertainty, review and next decision in one evidence receipt. That record makes progress visible without enlarging the claim beyond the stage reached. CSI Singapore, NUS and study teams control current research and released findings; clinicians, ethics boards and health authorities control diagnosis, treatment, recruitment and patient-care decisions.

Put this into practice by turning the idea into a small, reviewable action: Build a dated evidence card for “Cancer is a family of evolving diseases” with the question, method, observation, limitation and next test. Then ask what the resulting note or artefact actually demonstrates. A useful record names context, source or instruction, action, observation, interpretation and uncertainty. It also preserves this limit: No single mechanism explains every cancer.

An evidence check keeps confidence proportional to what the work can show. Separate the original observation or official statement from the learner’s explanation. Record feedback and any revision. If information is missing, write “not shown” or “not yet known” rather than guessing. That honest gap can become the next question.

Contents · Next chapter

Cells can differ within one tumour and between primary and metastatic sites. Bulk measurements average those differences, while single-cell and spatial methods reveal variation with their own sampling limits.

Translation is a chain of questions. Mechanism, target evidence, model response, safety, biomarker performance and clinical benefit each require different methods and decision owners. The practical capability is heterogeneity reasoning. Keep the question, method, controls, observation, uncertainty, review and next decision in one evidence receipt. That record makes progress visible without enlarging the claim beyond the stage reached. CSI Singapore, NUS and study teams control current research and released findings; clinicians, ethics boards and health authorities control diagnosis, treatment, recruitment and patient-care decisions.

Put this into practice by turning the idea into a small, reviewable action: Build a dated evidence card for “Tumour heterogeneity changes the research question” with the question, method, observation, limitation and next test. Then ask what the resulting note or artefact actually demonstrates. A useful record names context, source or instruction, action, observation, interpretation and uncertainty. It also preserves this limit: Detecting a rare cell state does not prove it drives clinical outcome.

An evidence check keeps confidence proportional to what the work can show. Separate the original observation or official statement from the learner’s explanation. Record feedback and any revision. If information is missing, write “not shown” or “not yet known” rather than guessing. That honest gap can become the next question.

Contents · Previous chapter · Next chapter

Changes in DNA may activate growth signals, disable safeguards or affect repair. Researchers compare tumour and normal material, functional models and population frequency to interpret possible drivers.

Data-rich cancer science depends on experimental provenance. A sequence, image or drug-response curve becomes useful when the sample, assay, processing, controls and clinical context stay linked. The practical capability is cancer-genomics literacy. Keep the question, method, controls, observation, uncertainty, review and next decision in one evidence receipt. That record makes progress visible without enlarging the claim beyond the stage reached. CSI Singapore, NUS and study teams control current research and released findings; clinicians, ethics boards and health authorities control diagnosis, treatment, recruitment and patient-care decisions.

Put this into practice by turning the idea into a small, reviewable action: Build a dated evidence card for “Mutations can alter growth and repair” with the question, method, observation, limitation and next test. Then ask what the resulting note or artefact actually demonstrates. A useful record names context, source or instruction, action, observation, interpretation and uncertainty. It also preserves this limit: A mutation found in a tumour is not automatically the cause or a drug target.

An evidence check keeps confidence proportional to what the work can show. Separate the original observation or official statement from the learner’s explanation. Record feedback and any revision. If information is missing, write “not shown” or “not yet known” rather than guessing. That honest gap can become the next question.

Contents · Previous chapter · Next chapter

DNA packaging and chemical modifications can alter which genes are accessible without changing sequence. Cell type, development and environment shape these patterns, requiring matched controls and careful assay interpretation.

Responsible claims distinguish discovery from validation. A promising association can guide the next experiment, while independent cohorts and prospective studies determine whether it generalises. The practical capability is epigenetic reasoning. Keep the question, method, controls, observation, uncertainty, review and next decision in one evidence receipt. That record makes progress visible without enlarging the claim beyond the stage reached. CSI Singapore, NUS and study teams control current research and released findings; clinicians, ethics boards and health authorities control diagnosis, treatment, recruitment and patient-care decisions.

Put this into practice by turning the idea into a small, reviewable action: Build a dated evidence card for “Epigenetics regulates gene activity” with the question, method, observation, limitation and next test. Then ask what the resulting note or artefact actually demonstrates. A useful record names context, source or instruction, action, observation, interpretation and uncertainty. It also preserves this limit: An epigenetic difference does not by itself establish reversible disease control.

An evidence check keeps confidence proportional to what the work can show. Separate the original observation or official statement from the learner’s explanation. Record feedback and any revision. If information is missing, write “not shown” or “not yet known” rather than guessing. That honest gap can become the next question.

Contents · Previous chapter · Next chapter

Messenger, non-coding and modified RNAs influence gene expression, translation and stress responses. Stability, localisation and protein interactions can matter as much as abundance.

Cancer research studies evolving cell populations rather than one uniform disease. Genetics, RNA, metabolism, immunity and tissue context can interact, so a result needs its cancer type, model and stage attached. The practical capability is RNA-biology literacy. Keep the question, method, controls, observation, uncertainty, review and next decision in one evidence receipt. That record makes progress visible without enlarging the claim beyond the stage reached. CSI Singapore, NUS and study teams control current research and released findings; clinicians, ethics boards and health authorities control diagnosis, treatment, recruitment and patient-care decisions.

Put this into practice by turning the idea into a small, reviewable action: Build a dated evidence card for “RNA biology adds regulatory layers” with the question, method, observation, limitation and next test. Then ask what the resulting note or artefact actually demonstrates. A useful record names context, source or instruction, action, observation, interpretation and uncertainty. It also preserves this limit: An RNA change can be consequence, marker or mechanism.

An evidence check keeps confidence proportional to what the work can show. Separate the original observation or official statement from the learner’s explanation. Record feedback and any revision. If information is missing, write “not shown” or “not yet known” rather than guessing. That honest gap can become the next question.

Contents · Previous chapter · Next chapter

Copy-number changes, rearrangements and mutation signatures can reflect defective repair or exposure histories. Computational methods compare patterns while accounting for purity, sequencing and model assumptions.

Translation is a chain of questions. Mechanism, target evidence, model response, safety, biomarker performance and clinical benefit each require different methods and decision owners. The practical capability is genome-instability reasoning. Keep the question, method, controls, observation, uncertainty, review and next decision in one evidence receipt. That record makes progress visible without enlarging the claim beyond the stage reached. CSI Singapore, NUS and study teams control current research and released findings; clinicians, ethics boards and health authorities control diagnosis, treatment, recruitment and patient-care decisions.

Put this into practice by turning the idea into a small, reviewable action: Build a dated evidence card for “Genome instability leaves patterns” with the question, method, observation, limitation and next test. Then ask what the resulting note or artefact actually demonstrates. A useful record names context, source or instruction, action, observation, interpretation and uncertainty. It also preserves this limit: A statistical signature is not a complete reconstruction of cause.

An evidence check keeps confidence proportional to what the work can show. Separate the original observation or official statement from the learner’s explanation. Record feedback and any revision. If information is missing, write “not shown” or “not yet known” rather than guessing. That honest gap can become the next question.

Contents · Previous chapter · Next chapter

Immune cells, fibroblasts, vessels and extracellular matrix exchange signals with cancer cells. Spatial context and treatment can change these relationships over time.

Data-rich cancer science depends on experimental provenance. A sequence, image or drug-response curve becomes useful when the sample, assay, processing, controls and clinical context stay linked. The practical capability is microenvironment literacy. Keep the question, method, controls, observation, uncertainty, review and next decision in one evidence receipt. That record makes progress visible without enlarging the claim beyond the stage reached. CSI Singapore, NUS and study teams control current research and released findings; clinicians, ethics boards and health authorities control diagnosis, treatment, recruitment and patient-care decisions.

Put this into practice by turning the idea into a small, reviewable action: Build a dated evidence card for “The tumour microenvironment shapes behaviour” with the question, method, observation, limitation and next test. Then ask what the resulting note or artefact actually demonstrates. A useful record names context, source or instruction, action, observation, interpretation and uncertainty. It also preserves this limit: A cell type associated with outcome may not be sufficient to change it.

An evidence check keeps confidence proportional to what the work can show. Separate the original observation or official statement from the learner’s explanation. Record feedback and any revision. If information is missing, write “not shown” or “not yet known” rather than guessing. That honest gap can become the next question.

Contents · Previous chapter · Next chapter

Immune cells can recognise abnormal antigens while tumours may suppress signalling or exclude immune attack. Experiments distinguish immune presence, state, specificity and function.

Responsible claims distinguish discovery from validation. A promising association can guide the next experiment, while independent cohorts and prospective studies determine whether it generalises. The practical capability is tumour-immunity reasoning. Keep the question, method, controls, observation, uncertainty, review and next decision in one evidence receipt. That record makes progress visible without enlarging the claim beyond the stage reached. CSI Singapore, NUS and study teams control current research and released findings; clinicians, ethics boards and health authorities control diagnosis, treatment, recruitment and patient-care decisions.

Put this into practice by turning the idea into a small, reviewable action: Build a dated evidence card for “Cancer immunology studies recognition and escape” with the question, method, observation, limitation and next test. Then ask what the resulting note or artefact actually demonstrates. A useful record names context, source or instruction, action, observation, interpretation and uncertainty. It also preserves this limit: Immune activation in a model does not guarantee a safe clinical response.

An evidence check keeps confidence proportional to what the work can show. Separate the original observation or official statement from the learner’s explanation. Record feedback and any revision. If information is missing, write “not shown” or “not yet known” rather than guessing. That honest gap can become the next question.

Contents · Previous chapter · Next chapter

Cancer and neighbouring cells use glucose, amino acids, lipids and oxygen according to genetics and environment. Isotope tracing and metabolic assays test flux rather than relying on abundance alone.

Cancer research studies evolving cell populations rather than one uniform disease. Genetics, RNA, metabolism, immunity and tissue context can interact, so a result needs its cancer type, model and stage attached. The practical capability is cancer-metabolism literacy. Keep the question, method, controls, observation, uncertainty, review and next decision in one evidence receipt. That record makes progress visible without enlarging the claim beyond the stage reached. CSI Singapore, NUS and study teams control current research and released findings; clinicians, ethics boards and health authorities control diagnosis, treatment, recruitment and patient-care decisions.

Put this into practice by turning the idea into a small, reviewable action: Build a dated evidence card for “Metabolism links nutrients with cell state” with the question, method, observation, limitation and next test. Then ask what the resulting note or artefact actually demonstrates. A useful record names context, source or instruction, action, observation, interpretation and uncertainty. It also preserves this limit: A metabolic dependency in culture may change inside a tumour.

An evidence check keeps confidence proportional to what the work can show. Separate the original observation or official statement from the learner’s explanation. Record feedback and any revision. If information is missing, write “not shown” or “not yet known” rather than guessing. That honest gap can become the next question.

Contents · Previous chapter · Next chapter

Cell lines, organoids, animals and patient-derived systems each preserve different features. Researchers match the model to the question and compare across systems before translation.

Translation is a chain of questions. Mechanism, target evidence, model response, safety, biomarker performance and clinical benefit each require different methods and decision owners. The practical capability is model-selection reasoning. Keep the question, method, controls, observation, uncertainty, review and next decision in one evidence receipt. That record makes progress visible without enlarging the claim beyond the stage reached. CSI Singapore, NUS and study teams control current research and released findings; clinicians, ethics boards and health authorities control diagnosis, treatment, recruitment and patient-care decisions.

Put this into practice by turning the idea into a small, reviewable action: Build a dated evidence card for “Models represent selected parts of disease” with the question, method, observation, limitation and next test. Then ask what the resulting note or artefact actually demonstrates. A useful record names context, source or instruction, action, observation, interpretation and uncertainty. It also preserves this limit: No model reproduces a whole patient and treatment history.

An evidence check keeps confidence proportional to what the work can show. Separate the original observation or official statement from the learner’s explanation. Record feedback and any revision. If information is missing, write “not shown” or “not yet known” rather than guessing. That honest gap can become the next question.

Contents · Previous chapter · Next chapter

A biomarker may support detection, prognosis, prediction, monitoring or trial selection. Its threshold, specimen, assay and intended population determine the evidence required.

Data-rich cancer science depends on experimental provenance. A sequence, image or drug-response curve becomes useful when the sample, assay, processing, controls and clinical context stay linked. The practical capability is biomarker literacy. Keep the question, method, controls, observation, uncertainty, review and next decision in one evidence receipt. That record makes progress visible without enlarging the claim beyond the stage reached. CSI Singapore, NUS and study teams control current research and released findings; clinicians, ethics boards and health authorities control diagnosis, treatment, recruitment and patient-care decisions.

Put this into practice by turning the idea into a small, reviewable action: Build a dated evidence card for “Biomarkers need a defined purpose” with the question, method, observation, limitation and next test. Then ask what the resulting note or artefact actually demonstrates. A useful record names context, source or instruction, action, observation, interpretation and uncertainty. It also preserves this limit: A research marker is not automatically ready for clinical use.

An evidence check keeps confidence proportional to what the work can show. Separate the original observation or official statement from the learner’s explanation. Record feedback and any revision. If information is missing, write “not shown” or “not yet known” rather than guessing. That honest gap can become the next question.

Contents · Previous chapter · Next chapter

Sample collection, tumour purity, library preparation, depth, alignment and variant calling affect genomic results. Matched controls and validation help separate biology from artefact.

Responsible claims distinguish discovery from validation. A promising association can guide the next experiment, while independent cohorts and prospective studies determine whether it generalises. The practical capability is sequencing literacy. Keep the question, method, controls, observation, uncertainty, review and next decision in one evidence receipt. That record makes progress visible without enlarging the claim beyond the stage reached. CSI Singapore, NUS and study teams control current research and released findings; clinicians, ethics boards and health authorities control diagnosis, treatment, recruitment and patient-care decisions.

Put this into practice by turning the idea into a small, reviewable action: Build a dated evidence card for “Sequencing requires provenance and quality control” with the question, method, observation, limitation and next test. Then ask what the resulting note or artefact actually demonstrates. A useful record names context, source or instruction, action, observation, interpretation and uncertainty. It also preserves this limit: More sequence data does not repair biased sampling.

An evidence check keeps confidence proportional to what the work can show. Separate the original observation or official statement from the learner’s explanation. Record feedback and any revision. If information is missing, write “not shown” or “not yet known” rather than guessing. That honest gap can become the next question.

Contents · Previous chapter · Next chapter

Mass spectrometry and antibody methods can quantify proteins and modifications. Dynamic range, digestion, references and missing values influence comparisons across samples.

Cancer research studies evolving cell populations rather than one uniform disease. Genetics, RNA, metabolism, immunity and tissue context can interact, so a result needs its cancer type, model and stage attached. The practical capability is proteomics reasoning. Keep the question, method, controls, observation, uncertainty, review and next decision in one evidence receipt. That record makes progress visible without enlarging the claim beyond the stage reached. CSI Singapore, NUS and study teams control current research and released findings; clinicians, ethics boards and health authorities control diagnosis, treatment, recruitment and patient-care decisions.

Put this into practice by turning the idea into a small, reviewable action: Build a dated evidence card for “Proteomics measures molecules closer to function” with the question, method, observation, limitation and next test. Then ask what the resulting note or artefact actually demonstrates. A useful record names context, source or instruction, action, observation, interpretation and uncertainty. It also preserves this limit: Protein abundance does not fully describe activity or location.

An evidence check keeps confidence proportional to what the work can show. Separate the original observation or official statement from the learner’s explanation. Record feedback and any revision. If information is missing, write “not shown” or “not yet known” rather than guessing. That honest gap can become the next question.

Contents · Previous chapter · Next chapter

Pipelines integrate molecular and clinical data using models, databases and statistical controls. Versioned code, held-out data and multiple-testing correction protect interpretation.

Translation is a chain of questions. Mechanism, target evidence, model response, safety, biomarker performance and clinical benefit each require different methods and decision owners. The practical capability is cancer-data science. Keep the question, method, controls, observation, uncertainty, review and next decision in one evidence receipt. That record makes progress visible without enlarging the claim beyond the stage reached. CSI Singapore, NUS and study teams control current research and released findings; clinicians, ethics boards and health authorities control diagnosis, treatment, recruitment and patient-care decisions.

Put this into practice by turning the idea into a small, reviewable action: Build a dated evidence card for “Bioinformatics turns datasets into testable hypotheses” with the question, method, observation, limitation and next test. Then ask what the resulting note or artefact actually demonstrates. A useful record names context, source or instruction, action, observation, interpretation and uncertainty. It also preserves this limit: A high-performing model can still encode batch effects.

An evidence check keeps confidence proportional to what the work can show. Separate the original observation or official statement from the learner’s explanation. Record feedback and any revision. If information is missing, write “not shown” or “not yet known” rather than guessing. That honest gap can become the next question.

Contents · Previous chapter · Next chapter

Target validation, screening, medicinal chemistry, exposure, safety and model efficacy address different failure modes. A promising compound is refined through repeated decision gates.

Data-rich cancer science depends on experimental provenance. A sequence, image or drug-response curve becomes useful when the sample, assay, processing, controls and clinical context stay linked. The practical capability is experimental-therapeutics literacy. Keep the question, method, controls, observation, uncertainty, review and next decision in one evidence receipt. That record makes progress visible without enlarging the claim beyond the stage reached. CSI Singapore, NUS and study teams control current research and released findings; clinicians, ethics boards and health authorities control diagnosis, treatment, recruitment and patient-care decisions.

Put this into practice by turning the idea into a small, reviewable action: Build a dated evidence card for “Drug discovery moves through staged evidence” with the question, method, observation, limitation and next test. Then ask what the resulting note or artefact actually demonstrates. A useful record names context, source or instruction, action, observation, interpretation and uncertainty. It also preserves this limit: Laboratory potency is not a clinical dose or outcome.

An evidence check keeps confidence proportional to what the work can show. Separate the original observation or official statement from the learner’s explanation. Record feedback and any revision. If information is missing, write “not shown” or “not yet known” rather than guessing. That honest gap can become the next question.

Contents · Previous chapter · Next chapter

Trials define eligibility, intervention, comparator, outcomes, monitoring and analysis. Consent, ethics review, safety reporting and independent interpretation protect participants and evidence quality.

Responsible claims distinguish discovery from validation. A promising association can guide the next experiment, while independent cohorts and prospective studies determine whether it generalises. The practical capability is clinical-research literacy. Keep the question, method, controls, observation, uncertainty, review and next decision in one evidence receipt. That record makes progress visible without enlarging the claim beyond the stage reached. CSI Singapore, NUS and study teams control current research and released findings; clinicians, ethics boards and health authorities control diagnosis, treatment, recruitment and patient-care decisions.

Put this into practice by turning the idea into a small, reviewable action: Build a dated evidence card for “Clinical studies require protocols and oversight” with the question, method, observation, limitation and next test. Then ask what the resulting note or artefact actually demonstrates. A useful record names context, source or instruction, action, observation, interpretation and uncertainty. It also preserves this limit: Study participation requires qualified clinical guidance.

An evidence check keeps confidence proportional to what the work can show. Separate the original observation or official statement from the learner’s explanation. Record feedback and any revision. If information is missing, write “not shown” or “not yet known” rather than guessing. That honest gap can become the next question.

Contents · Previous chapter · Next chapter

Archive specimen and consent, cancer type and stage, model, assay versions, controls, code, exclusions, effect sizes, uncertainty, replication and decision stage. Students can learn from public evidence while qualified teams manage clinical research.

Cancer research studies evolving cell populations rather than one uniform disease. Genetics, RNA, metabolism, immunity and tissue context can interact, so a result needs its cancer type, model and stage attached. The practical capability is cancer-science career preparation. Keep the question, method, controls, observation, uncertainty, review and next decision in one evidence receipt. That record makes progress visible without enlarging the claim beyond the stage reached. CSI Singapore, NUS and study teams control current research and released findings; clinicians, ethics boards and health authorities control diagnosis, treatment, recruitment and patient-care decisions.

Put this into practice by turning the idea into a small, reviewable action: Build a dated evidence card for “Keep a cancer-research evidence receipt” with the question, method, observation, limitation and next test. Then ask what the resulting note or artefact actually demonstrates. A useful record names context, source or instruction, action, observation, interpretation and uncertainty. It also preserves this limit: Only current clinicians and responsible authorities can diagnose, prescribe or approve a trial or product.

An evidence check keeps confidence proportional to what the work can show. Separate the original observation or official statement from the learner’s explanation. Record feedback and any revision. If information is missing, write “not shown” or “not yet known” rather than guessing. That honest gap can become the next question.

Contents · Previous chapter