Diagnostic investigations should be completed within one week of referral to a specialist. Note that molecular testing may take one to two weeks.

Five to 10 per cent of all cancers are due to a genetic predisposition. The features that suggest a genetic predisposition may include:

• early age at onset
• multiple primary cancers
• a family history of similar or related cancers, neurofibromatosis type 1 or tuberous sclerosis.

If present, these features may indicate that familial genetic testing is appropriate.

In some cases certain pathological subtypes of cancer or tumour tests (immunohistochemistry or tumour genetic tests) may suggest an underlying inherited cancer predisposition.

Anyone diagnosed with cancer should have a detailed personal and family cancer history taken. Consult relevant guidelines to determine if referral to a familial cancer service is appropriate.

A familial cancer service assessment can determine if genetic testing is appropriate. Genetic testing is likely to be offered when there is at least a 10 per cent chance of finding a causative ‘gene error’ (pathogenic gene variant; previously called a mutation). Usually testing begins with a variant search in a person who has had cancer (a diagnostic genetic test). If a pathogenic gene variant is identified, variant-specific testing is available to relatives to see if they have or have not inherited the familial gene variant (predictive genetic testing).

Medicare funds some genetic tests via a Medicare Benefits Schedule (MBS) item number but most are not. Depending on the personal and family history, the relevant state health system may fund public sector genetic testing.

Pre-test counselling and informed consent is required before any genetic testing. In some states the treating team can offer ‘mainstream’ diagnostic genetic testing, after which referral is made to a familial cancer service if a pathogenic gene variant is identified. The familial cancer service can provide risk management advice, facilitate family risk notification and arrange predictive genetic testing for the family.

Visit the Centre for Genetics Education website for basic information about cancer in a family.

Pharmacogenetics describes how individual genetic differences can lead to differences in the way certain medicines interact with the body. These interactions can affect the effectiveness of medications and any side effects. Applying pharmacogenetics to treatment planning may help patients to be prescribed the most appropriate treatment at the optimal dose from the beginning of treatment (NHMRC 2013).

A number of factors should be considered at this stage:

• the patient’s overall condition, life expectancy, personal preferences and decision- making capacity
• discussing the multidisciplinary team approach to care with the patient
• appropriate and timely referral to an MDM
• pregnancy and fertility
• support with travel and accommodation
• teleconferencing or videoconferencing as required.

The multidisciplinary team should meet to discuss newly diagnosed patients within two weeks of diagnosis so that a treatment plan can be recommended and there can be early preparation for the post-treatment phase. However, immediate treatment is often required before a full MDM ratifies details of the management plan (which should include full details of the response assessment). For certain tumour subgroups (brainstem glioma, eloquent area, multifocal tumours, unusual tumours), the multidisciplinary team should convene before surgery. The level of discussion may vary, depending on the patient’s clinical and supportive care factors.

Selected patients may not be discussed by a multidisciplinary team; instead the team may have treatment plan protocols that will be applied if the patient’s case (cancer) meets the criteria. If patients are not discussed at an MDM, they should at least be named on the agenda for noting. The proposed treatment must be recorded in the patient’s medical record and should be recorded in an MDM database where one exists.

Teams may agree on standard treatment protocols for selected patients, facilitating patient review (by exception) and associated data capture.

Results of all relevant tests and access to images should be available for the MDM. Information about the patient’s concerns, preferences and social and cultural circumstances should also be available.

The multidisciplinary team requires administrative support in developing the agenda for the meeting, for collating patient information and to ensure appropriate expertise around the table to create an effective treatment plan for the patient. The MDM has a chair and multiple lead clinicians. Each patient case will be presented by a lead clinician (usually someone who has seen the patient before the MDM). In public hospital settings, the registrar or clinical fellow may take this role. A member of the team records the outcomes of the discussion and treatment plan in the patient history and ensures these details are communicated to the patient’s general practitioner. The team should consider the patient’s values, beliefs and cultural needs as appropriate to ensure the treatment plan is in line with these.

The multidisciplinary team should be composed of the core disciplines that are integral to providing good care. Team membership should reflect both clinical and supportive care aspects of care. Pathology and radiology expertise are essential.

See ‘About this OCP’ for a list of team members who may be included in the multidisciplinary team for high-grade glioma.

Core members of the multidisciplinary team are expected to attend most MDMs either in person or remotely via virtual mechanisms. Additional expertise or specialist services may be required for some patients. An Aboriginal and Torres Strait Islander cultural expert should be considered for all patients who identify as Aboriginal or Torres Strait Islander.

The general practitioner who made the referral is responsible for the patient until care is passed to another practitioner who is directly involved in planning the patient’s care.

The general practitioner may play a number of roles in all stages of the cancer pathway including diagnosis, referral, treatment, shared follow-up care, post-treatment surveillance, coordination and continuity of care, as well as managing existing health issues and providing information and support to the patient, their family and carer.

A nominated contact person from the multidisciplinary team may be assigned responsibility for coordinating care in this phase. Care coordinators are responsible for ensuring there is continuity throughout the care process and coordination of all necessary care for a particular phase (COSA 2015). The care coordinator may change over the course of the pathway.

The lead clinician is responsible for overseeing the activity of the team and for implementing treatment within the multidisciplinary setting.

Cancer prehabilitation uses a multidisciplinary approach combining exercise, nutrition and psychological strategies to prepare patients for the challenges of cancer treatment such as surgery, systemic therapy and radiation therapy. Team members may include anaesthetists, oncologists, surgeons, haematologists, clinical psychologists, exercise physiologists, physiotherapists and dietitians, among others.

Patient performance status is a central factor in cancer care and should be frequently assessed. All patients should be screened for malnutrition using a validated tool, such as the Malnutrition Screening Tool (MST). The lead clinician may refer obese or malnourished patients to a dietitian preoperatively or before other treatments begin.

Patients who currently smoke should be encouraged to stop smoking before receiving treatment. This should include an offer of referral to Quitline in addition to smoking cessation pharmacotherapy if clinically appropriate.

Evidence indicates that patients who respond well to prehabilitation may have fewer complications after treatment. For example, those who were exercising before diagnosis and patients who use prehabilitation before starting treatment may improve their physical or psychological outcomes, or both, and this helps patients to function at a higher level throughout their cancer treatment (Cormie et al. 2017; Silver 2015). However, prehabilitation may only be feasible for a minority of patients with high-grade glioma given the urgency of starting treatment.

For patients with high-grade glioma, the multidisciplinary team should consider these specific prehabilitation assessments and interventions for treatment-related complications or major side effects:

• conducting a physical and psychological assessment to establish a baseline function level
• identifying impairments and providing targeted interventions to improve the patient’s function level (Silver & Baima 2013)
• reviewing the patient’s medication to ensure optimisation and to improve adherence to medicine used for comorbid conditions.

Following completion of primary cancer treatment, rehabilitation programs have considerable potential to enhance physical function.

Cancer and cancer treatment may cause fertility problems. This will depend on the age of the patient, the type of cancer and the treatment received. Infertility can range from difficulty having a child to the inability to have a child. Infertility after treatment may be temporary, lasting months to years, or permanent (AYA Cancer Fertility Preservation Guidance Working Group 2014).

Patients need to be advised about and potentially referred for discussion about fertility preservation before starting treatment and need advice about contraception before, during and after treatment. Patients and their family should be aware of the ongoing costs involved in optimising fertility. Fertility management may apply in both men and women. Fertility preservation options are different for men and women and the need for ongoing contraception applies to both men and women.

The potential for impaired fertility should be discussed and reinforced at different time points as appropriate throughout the diagnosis, treatment, surveillance and survivorship phases of care. These ongoing discussions will enable the patient and, if applicable, the family to make informed decisions. All discussions should be documented in the patient’s medical record.

See the Cancer Council website for more information.

See validated screening tools mentioned in Principle 4 ‘Supportive care’.

A number of specific challenges and needs may arise for patients at this time:

• assistance for dealing with psychological and emotional distress while adjusting to the diagnosis; treatment phobias; existential concerns; stress; difficulties making treatment decisions; anxiety or depression or both; psychosexual issues such as potential loss of fertility; history of sexual abuse; and interpersonal problems
• management of behavioural changes, personality change, cognitive impairment, corticosteroid toxicity and psychiatric symptoms
• management of physical symptoms such as pain, fatigue (Australian Adult Cancer Pain Management Guideline Working Party 2019), headaches, dysphasia, neurological impairment and seizure control
• physical decline, which is common in patients with high-grade glioma – encourage patients to maintain function and refer to a physiotherapist if further advice is required
• fitness to drive – assessments should be conducted as per the Australian guidelines
• malnutrition or undernutrition, identified using a validated nutrition screening tool such as the MST (note that many patients with a high BMI [obese patients] may also be malnourished [WHO 2018])
• impact on working ability and financial impact
• support for families or carers who are distressed with the patient’s cancer diagnosis
• support for families/relatives who may be distressed after learning of a genetically linked cancer diagnosis
• specific spiritual needs that may benefit from the involvement of pastoral/spiritual care.

Additionally, palliative care may be required at this stage.

For more information on supportive care and needs that may arise for different population groups, see Appendices A and B, and special population groups.

In discussion with the patient, the lead clinician should undertake the following:

• establish if the patient has a regular or preferred general practitioner and if the patient does not have one, then encourage them to find one
• provide written information appropriate to the health literacy of the patient about the diagnosis and treatment to the patient and carer and refer the patient to the Guide to best cancer care (consumer optimal care pathway) for high-grade glioma, as well as to relevant websites and support groups as appropriate
• provide a treatment care plan including contact details for the treating team and information on when to call the hospital
• discuss a timeframe for diagnosis and treatment with the patient and carer
• discuss the benefits of multidisciplinary care and gain the patient’s consent before presenting their case at an MDM
• provide brief advice and refer to Quitline (13 7848) for behavioural intervention if the patient currently smokes (or has recently quit), and prescribe smoking cessation pharmacotherapy, if clinically appropriate
• recommend an ‘integrated approach’ throughout treatment regarding nutrition, exercise and minimal or no alcohol consumption among other considerations
• communicate the benefits of continued engagement with primary care during treatment for managing comorbid disease, health promotion, care coordination and holistic care
• where appropriate, review fertility needs with the patient and refer for specialist fertility management (including fertility preservation, contraception, management during pregnancy and of future pregnancies)
• be open to and encourage discussion about the diagnosis, prognosis (if the patient wishes to know) and survivorship and palliative care while clarifying the patient’s preferences and needs, personal and cultural beliefs and expectations, and their ability to comprehend the communication
• encourage the patient to participate in advance care planning including considering appointing one or more substitute decision-makers and completing an advance care directive to clearly document their treatment preferences. Each state and territory has different terminology and legislation surrounding advance care directives and substitute decision-makers
• give consideration for the physical and psychological health of carers because often the stress of the carer can be higher than that of the patient.

The lead clinician has these communication responsibilities:

• involving the general practitioner from the point of diagnosis
• ensuring regular and timely communication with the general practitioner about the diagnosis, treatment plan and recommendations from MDMs and inviting them to participate in MDMs (consider using virtual mechanisms)
• supporting the role of general practice both during and after treatment
• discussing shared or team care arrangements with general practitioners or regional cancer specialists, or both, together with the patient.

Refer to Principle 6 ‘Communication’ for communication skills training programs and resources.